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  • 1
    Keywords: Geology, Stratigraphic ; Stratigraphy ; Sequenzstratigraphie ; Estratigrafia
    Description / Table of Contents: John F. Aitken and John A. Howell: High resolution sequence stratigraphy: innovations, applications and future prospects / Geological Society, London, Special Publications, 104:1-9, doi:10.1144/GSL.SP.1996.104.01.01 --- S. F. Mitchell, C. R. C. Paul, and A. S. Gale: Carbon isotopes and sequence stratigraphy / Geological Society, London, Special Publications, 104:11-24, doi:10.1144/GSL.SP.1996.104.01.02 --- S. J. Davies and T. Elliott: Spectral gamma ray characterization of high resolution sequence stratigraphy: examples from Upper Carboniferous fluvio-deltaic systems, County Clare, Ireland / Geological Society, London, Special Publications, 104:25-35, doi:10.1144/GSL.SP.1996.104.01.03 --- David G. Quirk: ‘Base profile’: a unifying concept in alluvial sequence stratigraphy / Geological Society, London, Special Publications, 104:37-49, doi:10.1144/GSL.SP.1996.104.01.04 --- Ian D. Bryant: The application of physical measurements to constrain reservoir-scale sequence stratigraphic models / Geological Society, London, Special Publications, 104:51-63, doi:10.1144/GSL.SP.1996.104.01.05 --- John M. Armentrout: High resolution sequence biostratigraphy: examples from the Gulf of Mexico Plio-Pleistocene / Geological Society, London, Special Publications, 104:65-86, doi:10.1144/GSL.SP.1996.104.01.06 --- David C. Jennette and Cheyenne O. Riley: Influence of relative sea-level on facies and reservoir geometry of the Middle Jurassic lower Brent Group, UK North Viking Graben / Geological Society, London, Special Publications, 104:87-113, doi:10.1144/GSL.SP.1996.104.01.07 --- F. L. Wehr and L. D. Brasher: Impact of sequence-based correlation style on reservoir model behaviour, lower Brent Group, North Cormorant Field, UK North Sea / Geological Society, London, Special Publications, 104:115-128, doi:10.1144/GSL.SP.1996.104.01.08 --- John A. Howell and Stephen S. Flint: A model for high resolution sequence stratigraphy within extensional basins / Geological Society, London, Special Publications, 104:129-137, doi:10.1144/GSL.SP.1996.104.01.09 --- T. McKie and I. R. Garden: Hierarchical stratigraphic cycles in the non-marine Clair Group (Devonian) UKCS / Geological Society, London, Special Publications, 104:139-157, doi:10.1144/GSL.SP.1996.104.01.10 --- A. Guy Plint: Marine and nonmarine systems tracts in fourth-order sequences in the Early-Middle Cenomanian, Dunvegan Alloformation, northeastern British Columbia, Canada / Geological Society, London, Special Publications, 104:159-191, doi:10.1144/GSL.SP.1996.104.01.11 --- John F. Aitken and Stephen S. Flint: Variable expressions of interfluvial sequence boundaries in the Breathitt Group (Pennsylvanian), eastern Kentucky, USA / Geological Society, London, Special Publications, 104:193-206, doi:10.1144/GSL.SP.1996.104.01.12 --- Ciaran J. O’Byrne and Stephen Flint: Interfluve sequence boundaries in the Grassy Member, Book Cliffs, Utah: criteria for recognition and implications for subsurface correlation / Geological Society, London, Special Publications, 104:207-220, doi:10.1144/GSL.SP.1996.104.01.13 --- Gary J. Hampson, Trevor Elliott, and Stephen S. Flint: Critical application of high resolution sequence stratigraphic concepts to the Rough Rock Group (Upper Carboniferous) of northern England / Geological Society, London, Special Publications, 104:221-246, doi:10.1144/GSL.SP.1996.104.01.14 --- David Uličný and Lenka Špičáková: Response to high frequency sea-level change in a fluvial to estuarine succession: Cenomanian palaeovalley fill, Bohemian Cretaceous Basin / Geological Society, London, Special Publications, 104:247-268, doi:10.1144/GSL.SP.1996.104.01.15 --- David Owen: Interbasinal correlation of the Cenomanian Stage; testing the lateral continuity of sequence boundaries / Geological Society, London, Special Publications, 104:269-293, doi:10.1144/GSL.SP.1996.104.01.16 --- Bruce W. Fouke, Arnout-Jan W. Everts, Erik W. Zwart, Wolfgang Schlager, P. C. Smalley, and Helmut Weissert: Subaerial exposure unconformities on the Vercors carbonate platform (SE France) and their sequence stratigraphic significance / Geological Society, London, Special Publications, 104:295-319, doi:10.1144/GSL.SP.1996.104.01.17 --- Dave Hunt, Tim Allsop, and Richard E. Swarbrick: Compaction as a primary control on the architecture and development of depositional sequences: conceptual framework, applications and implications / Geological Society, London, Special Publications, 104:321-345, doi:10.1144/GSL.SP.1996.104.01.18 --- Lars Stemmerik: High frequency sequence stratigraphy of a siliciclastic influenced carbonate platform, lower Moscovian, Amdrup Land, North Greenland / Geological Society, London, Special Publications, 104:347-365, doi:10.1144/GSL.SP.1996.104.01.19
    Pages: Online-Ressource (VI, 374 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799489
    Language: English
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  • 2
    Keywords: Mittelmeerraum ; Paläomagnetismus ; Tektonik ; Cenozoic ; Geodynamics ; Geologia estrutural ; Geology, Stratigraphic ; Geology, Structural ; Mediterranean Region ; Mesozoic ; Paleomagnetism ; Paleomagnetismo ; Plate tectonics
    Description / Table of Contents: A. Morris and D. H. Tarling: Palaeomagnetism and tectonics of the Mediterranean region: an introduction / Geological Society, London, Special Publications, 105:1-18, doi:10.1144/GSL.SP.1996.105.01.01 --- Western Mediterranean --- A. Kirker and E. McClelland: Application of net tectonic rotations and inclination analysis to a high-resolution palaeomagnetic study in the Betic Cordillera / Geological Society, London, Special Publications, 105:19-32, doi:10.1144/GSL.SP.1996.105.01.02 --- J. J. Villalaín, M. L. Osete, R. Vegas, V. García-Dueñas, and F. Heller: The Neogene remagnetization in the western Betics: a brief comment on the reliability of palaeomagnetic directions / Geological Society, London, Special Publications, 105:33-41, doi:10.1144/GSL.SP.1996.105.01.03 --- H. Feinberg, O. Saddiqi, and A. Michard: New constraints on the bending of the Gibraltar Arc from palaeomagnetism of the Ronda peridotites (Betic Cordilleras, Spain) / Geological Society, London, Special Publications, 105:43-52, doi:10.1144/GSL.SP.1996.105.01.04 --- D. Khattach, D. Najid, N. Hamoumi, and D. H. Tarling: Palaeomagnetic studies in Morocco: tectonic implications for the Meseta and Anti-Atlas since the Permian / Geological Society, London, Special Publications, 105:53-57, doi:10.1144/GSL.SP.1996.105.01.05 --- D. Rey, P. Turner, and A. Ramos: Palaeomagnetism and magnetostratigraphy of the Middle Triassic in the Iberian Ranges (Central Spain) / Geological Society, London, Special Publications, 105:59-82, doi:10.1144/GSL.SP.1996.105.01.06 --- M. T. Juárez, M. L. Osete, R. Vegas, C. G. Langereis, and G. Meléndez: Palaeomagnetic study of Jurassic limestones from the Iberian Range (Spain): tectonic implications / Geological Society, London, Special Publications, 105:83-90, doi:10.1144/GSL.SP.1996.105.01.07 --- M. Garcés, J. M. Parés, and L. Cabrera: Inclination error linked to sedimentary facies in Miocene detrital sequences from the Vallès-Penedès Basin (NE Spain) / Geological Society, London, Special Publications, 105:91-99, doi:10.1144/GSL.SP.1996.105.01.08 --- P. Keller and U. Gehring: Consequences of post-collisional deformation on the reconstruction of the East Pyrenees / Geological Society, London, Special Publications, 105:101-109, doi:10.1144/GSL.SP.1996.105.01.09 --- J. L. Pereira, A. Rapalini, D. H. Tarling, and J. Fonseca: Palaeomagnetic dating and determination of tectonic tilting: a study of Mesozoic-Cenozoic igneous rocks in central West Portugal / Geological Society, London, Special Publications, 105:111-117, doi:10.1144/GSL.SP.1996.105.01.10 --- Central Mediterranean and Carpathians --- J. E. T. Channell: Palaeomagnetism and palaeogeography of Adria / Geological Society, London, Special Publications, 105:119-132, doi:10.1144/GSL.SP.1996.105.01.11 --- M. Iorio, G. Nardi, D. Pierattini, and D. H. Tarling: Palaeomagnetic evidence of block rotations in the Matese Mountains, Southern Apennines, Italy / Geological Society, London, Special Publications, 105:133-139, doi:10.1144/GSL.SP.1996.105.01.12 --- M. Mattei, C. Kissel, L. Sagnotti, R. Funiciello, and C. Faccenna: Lack of Late Miocene to Present rotation in the Northern Tyrrhenian margin (Italy): a constraint on geodynamic evolution / Geological Society, London, Special Publications, 105:141-146, doi:10.1144/GSL.SP.1996.105.01.13 --- M. Fedi, G. Florio, and A. Rapolla: The pattern of crustal block rotations in the Italian region deduced from aeromagnetic anomalies / Geological Society, London, Special Publications, 105:147-152, doi:10.1144/GSL.SP.1996.105.01.14 --- Emő Márton and Péter Márton: Large scale rotations in North Hungary during the Neogene as indicated by palaeomagnetic data / Geological Society, London, Special Publications, 105:153-173, doi:10.1144/GSL.SP.1996.105.01.15 --- Miroslav Krs, Marta Krsová, and Petr Pruner: Palaeomagnetism and palaeogeography of the Western Carpathians from the Permian to the Neogene / Geological Society, London, Special Publications, 105:175-184, doi:10.1144/GSL.SP.1996.105.01.16 --- Václav Houša, Miroslav Krs, Marta Krsová, and Petr Pruner: Magnetostratigraphy of Jurassic-Cretaceous limestones in the Western Carpathians / Geological Society, London, Special Publications, 105:185-194, doi:10.1144/GSL.SP.1996.105.01.17 --- M. Iorio, D. H. Tarling, B. D’argenio, and G. Nardi: Ultra-fine magnetostratigraphy of Cretaceous shallow water carbonates, Monte Raggeto, southern Italy / Geological Society, London, Special Publications, 105:195-203, doi:10.1144/GSL.SP.1996.105.01.18 --- E. McClelland, B. Finegan, and R. W. H. Butler: A magnetostratigraphic study of the onset of the Mediterranean Messinian salility crisis; Caltanissetta Basin, Sicily / Geological Society, London, Special Publications, 105:205-217, doi:10.1144/GSL.SP.1996.105.01.19 --- F. Florindo and L. Sagnotti: Revised magnetostratigraphy and rock magnetism of Pliocene sediments from Valle Ricca (Rome, Italy) / Geological Society, London, Special Publications, 105:219-223, doi:10.1144/GSL.SP.1996.105.01.20 --- Giancarlo Scalera, Paolo Favali, and Fabio Florindo: Palaeomagnetic database: the effect of quality filtering for geodynamic studies / Geological Society, London, Special Publications, 105:225-237, doi:10.1144/GSL.SP.1996.105.01.21 --- Eastern Mediterranean --- A. H. F. Robertson, J. E. Dixon, S. Brown, A. Collins, A. Morris, E. Pickett, I. Sharp, and T. Ustaömer: Alternative tectonic models for the Late Palaeozoic-Early Tertiary development of Tethys in the Eastern Mediterranean region / Geological Society, London, Special Publications, 105:239-263, doi:10.1144/GSL.SP.1996.105.01.22 --- H. J. Mauritsch, R. Scholger, S. L. Bushati, and A. Xhomo: Palaeomagnetic investigations in Northern Albania and their significance for the geodynamic evolution of the Adriatic-Aegean realm / Geological Society, London, Special Publications, 105:265-275, doi:10.1144/GSL.SP.1996.105.01.23 --- D. Kondopoulou, A. Atzemoglou, and S. Pavlides: Palaeomagnetism as a tool for testing geodynamic models in the North Aegean: convergences, controversies and a further hypothesis / Geological Society, London, Special Publications, 105:277-288, doi:10.1144/GSL.SP.1996.105.01.24 --- H. Feinberg, B. Edel, D. Kondopoulou, and A. Michard: Implications of ophiolite palaeomagnetism for the interpretation of the geodynamics of Northern Greece / Geological Society, London, Special Publications, 105:289-298, doi:10.1144/GSL.SP.1996.105.01.25 --- J. D. A. Piper, Joanna M. Moore, O. Tatar, H. Gursoy, and R. G. Park: Palaeomagnetic study of crustal deformation across an intracontinental transform: the North Anatolian Fault Zone in Northern Turkey / Geological Society, London, Special Publications, 105:299-310, doi:10.1144/GSL.SP.1996.105.01.26 --- Antony Morris: A review of palaeomagnetic research in the Troodos ophiolite, Cyprus / Geological Society, London, Special Publications, 105:311-324, doi:10.1144/GSL.SP.1996.105.01.27 --- A. M. Kafafy, D. H. Tarling, M. M. El Gamili, H. H. Hamama, and E. H. Ibrahim: Palaeomagnetism of some Cretaceous Nubian Sandstones, Northern Sinai, Egypt / Geological Society, London, Special Publications, 105:325-332, doi:10.1144/GSL.SP.1996.105.01.28 --- A. L. Abdeldayem and D. H. Tarling: Palaeomagnetism of some Tertiary sedimentary rocks, southwest Sinai, Egypt, in the tectonic framework of the SE Mediterranean / Geological Society, London, Special Publications, 105:333-343, doi:10.1144/GSL.SP.1996.105.01.29 --- Applications in Volcanology --- Leon Bardot, Rick Thomas, and Elizabeth McClelland: Emplacement temperatures of pyroclastic deposits on Santorini deduced from palaeomagnetic measurements: constraints on eruption mechanisms / Geological Society, London, Special Publications, 105:345-357, doi:10.1144/GSL.SP.1996.105.01.30 --- Maurizio De’ Gennaro, Paola R. Gialanella, Alberto Incoronato, Giuseppe Mastrolorenzo, and Debora Naimo: Palaeomagnetic controls on the emplacement of the Neapolitan Yellow Tuff (Campi Flegrei, Southern Italy) / Geological Society, London, Special Publications, 105:359-365, doi:10.1144/GSL.SP.1996.105.01.31 --- Alberto Incoronato: Magnetic stratigraphy procedures in volcanic areas: the experience at Vesuvius / Geological Society, London, Special Publications, 105:367-371, doi:10.1144/GSL.SP.1996.105.01.32 --- Archaeomagnetism --- M. E. Evans: Archaeomagnetic results from the Mediterranean region: an overview / Geological Society, London, Special Publications, 105:373-384, doi:10.1144/GSL.SP.1996.105.01.33 --- P. Márton: Archaeomagnetic directions: the Hungarian calibration curve / Geological Society, London, Special Publications, 105:385-399, doi:10.1144/GSL.SP.1996.105.01.34 --- A. Morris: Glossary of basic palaeomagnetic and rock magnetic terms / Geological Society, London, Special Publications, 105:401-415, doi:10.1144/GSL.SP.1996.105.01.35
    Pages: Online-Ressource (422 Seiten) , Diagramme, Karten
    ISBN: 1897799551
    Language: English
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  • 3
    Keywords: Atlantischer Raum Nord ; Präkambrium ; Erdkruste ; Crosta da terra (evolução) ; Crust ; Earth ; Earth - Crust - Congresses ; Geology ; Geology, Stratigraphic ; Géologie - Atlantique Nord (région) ; Lithosphère ; North Atlantic Region ; Precambrian ; Pré-cambriano - Oceano atlântico;região norte ; Précambrien
    Description / Table of Contents: D. B. Snyder, S. B. Lucas, and J. H. McBride: Crustal and mantle reflectors from Palaeoproterozoic orogens and their relation to arc-continent collisions / Geological Society, London, Special Publications, 112:1-23, doi:10.1144/GSL.SP.1996.112.01.01 --- H. R. Rollinson: Tonalite-trondhjemite-granodiorite magmatism and the genesis of Lewisian crust during the Archaean / Geological Society, London, Special Publications, 112:25-42, doi:10.1144/GSL.SP.1996.112.01.02 --- A. Vrevsky, R. Krimsky, and S. Svetov: Rare earth and isotopic (Nd, O) heterogeneity of the Archaean mantle, Baltic Shield / Geological Society, London, Special Publications, 112:43-53, doi:10.1144/GSL.SP.1996.112.01.03 --- E. V. Bibikova, T. Skiöld, and S. V. Bogdanova: Age and geodynamic aspects of the oldest rocks in the Precambrian Belomorian Belt of the Baltic (Fennoscandian) Shield / Geological Society, London, Special Publications, 112:55-67, doi:10.1144/GSL.SP.1996.112.01.04 --- S. V. Bogdanova: High-grade metamorphism of 2.45–2.4 Ga age in mafic intrusions of the Belomorian Belt in the northeastern Baltic Shield / Geological Society, London, Special Publications, 112:69-90, doi:10.1144/GSL.SP.1996.112.01.05 --- Martin J. Van Kranendonk and Richard J. Wardle: Burwell domain of the Palaeoproterozoic Torngat Orogen, northeastern Canada: tilted cross-section of a magmatic are caught between a rock and a hard place / Geological Society, London, Special Publications, 112:91-115, doi:10.1144/GSL.SP.1996.112.01.06 --- Toby Rivers, Flemming Mengel, David J. Scott, Lisa M. Campbell, and Normand Goulet: Torngat Orogen — a Palaeoproterozoic example of a narrow doubly vergent collisional orogen / Geological Society, London, Special Publications, 112:117-136, doi:10.1144/GSL.SP.1996.112.01.07 --- R. J. Wardle and M. J. Van Kranendonk: The Palaeoproterozoic Southeastern Churchill Province of Labrador-Quebec, Canada: orogenic development as a consequence of oblique collision and indentation / Geological Society, London, Special Publications, 112:137-153, doi:10.1144/GSL.SP.1996.112.01.08 --- Andrew Kerr, Bruce Ryan, Charles F. Gower, Richard J. Wardle, and Andrew Kerr: The Makkovik Province: extension of the Ketilidian Mobile Belt in mainland North America / Geological Society, London, Special Publications, 112:155-177, doi:10.1144/GSL.SP.1996.112.01.09 --- B. Chadwick and A. A. Garde: Palaeoproterozoic oblique plate convergence in South Greenland: a reappraisal of the Ketilidian Orogen / Geological Society, London, Special Publications, 112:179-196, doi:10.1144/GSL.SP.1996.112.01.10 --- Charles F. Gower: The evolution of the Grenville Province in eastern Labrador, Canada / Geological Society, London, Special Publications, 112:197-218, doi:10.1144/GSL.SP.1996.112.01.11 --- Ian C. Starmer: Accretion, rifting, rotation and collision in the North Atlantic supercontinent, 1700-950 Ma / Geological Society, London, Special Publications, 112:219-248, doi:10.1144/GSL.SP.1996.112.01.12 --- A. Wikström, T. Skiöld, and B. Öhlander: The relationship between 1.88 Ga old magmatism and the Baltic-Bothnian shear zone in northern Sweden / Geological Society, London, Special Publications, 112:249-259, doi:10.1144/GSL.SP.1996.112.01.13 --- J. N. Connelly and K-I. Åhäll: The Mesoproterozoic cratonization of Baltica — new age constraints from SW Sweden / Geological Society, London, Special Publications, 112:261-273, doi:10.1144/GSL.SP.1996.112.01.14 --- J. F. Menuge and T. S. Brewer: Mesoproterozoic anorogenic magmatism in southern Norway / Geological Society, London, Special Publications, 112:275-295, doi:10.1144/GSL.SP.1996.112.01.15 --- J. N. Connelly, J. Berglund, and S. Å. Larson: Thermotectonic evolution of the Eastern Segment of southwestern Sweden: tectonic constraints from U-Pb geochronology / Geological Society, London, Special Publications, 112:297-313, doi:10.1144/GSL.SP.1996.112.01.16 --- Laurence M. Page, Michael B. Stephens, and Carl-Henric Wahlgren: 40Ar/39Ar geochronological constraints on the tectonothermal evolution of the Eastern Segment of the Sveconorwegian Orogen, south-central Sweden / Geological Society, London, Special Publications, 112:315-330, doi:10.1144/GSL.SP.1996.112.01.17 --- S. Mertanen, L. J. Pesonen, and H. Huhma: Palaeomagnetism and Sm-Nd ages of the Neoproterozoic diabase dykes in Laanila and Kautokeino, northern Fennoscandia / Geological Society, London, Special Publications, 112:331-358, doi:10.1144/GSL.SP.1996.112.01.18 --- Trevor F. Emmett: The provenance of pre-Scandian continental flakes within the Caledonide Orogen of south-central Norway / Geological Society, London, Special Publications, 112:359-366, doi:10.1144/GSL.SP.1996.112.01.19 --- W. R. Fitches, N. J. G. Pearce, J. A. Evans, and R. J. Muir: Provenance of late Proterozoic Dalradian tillite clasts, Inner Hebrides, Scotland / Geological Society, London, Special Publications, 112:367-377, doi:10.1144/GSL.SP.1996.112.01.20
    Pages: Online-Ressource (VII, 386 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799624
    Language: English
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  • 4
    Keywords: Becken (Geologie) ; Cergy (1996) ; Geologie ; Mittelmeer ; Pannonisches Becken ; Basins (Geology) ; Mediterranean region ; Orogeny ; Alpine region ; Geology, Stratigraphic ; Geology, Cenozoic
    Description / Table of Contents: B. Durand and L. Jolivet: Foreword / Geological Society, London, Special Publications, 156:vii-ix, doi:10.1144/GSL.SP.1999.156.01.01 --- L. Jolivet, D. Frizon de Lamotte, A. Mascle, and M. Séranne: The Mediterranean Basins: Tertiary Extension within the Alpine Orogen — an introduction / Geological Society, London, Special Publications, 156:1-14, doi:10.1144/GSL.SP.1999.156.01.02 --- Western Mediterranean --- Michel Séranne: The Gulf of Lion continental margin (NW Mediterranean) revisited by IBS: an overview / Geological Society, London, Special Publications, 156:15-36, doi:10.1144/GSL.SP.1999.156.01.03 --- N. Chamot-Rooke, J.-M. Gaulier, and F. Jestin: Constraints on Moho depth and crustal thickness in the Liguro-Provençal basin from a 3D gravity inversion: geodynamic implications / Geological Society, London, Special Publications, 156:37-61, doi:10.1144/GSL.SP.1999.156.01.04 --- J. Vergés and F. Sàbat: Constraints on the Neogene Mediterranean kinematic evolution along a 1000 km transect from Iberia to Africa / Geological Society, London, Special Publications, 156:63-80, doi:10.1144/GSL.SP.1999.156.01.05 --- A. Benedicto, M. Séguret, and P. Labaume: Interaction between faulting, drainage and sedimentation in extensional hanging-wall syncline basins: example of the Oligocene Matelles basin (Gulf of Lion rifted margin, SE France) / Geological Society, London, Special Publications, 156:81-108, doi:10.1144/GSL.SP.1999.156.01.06 --- H. P. Zeck: Alpine plate kinematics in the western Mediterranean: a westward-directed subduction regime followed by slab roll-back and slab detachment / Geological Society, London, Special Publications, 156:109-120, doi:10.1144/GSL.SP.1999.156.01.07 --- Alain Mascle and Roland Vially: The petroleum systems of the Southeast Basin and Gulf of Lion (France) / Geological Society, London, Special Publications, 156:121-140, doi:10.1144/GSL.SP.1999.156.01.08 --- Marjorie Wilson and Gianluca Bianchini: Tertiary-Quaternary magmatism within the Mediterranean and surrounding regions / Geological Society, London, Special Publications, 156:141-168, doi:10.1144/GSL.SP.1999.156.01.09 --- A. Mauffret and I. Contrucci: Crustal structure of the North Tyrrhenian Sea: first result of the multichannel seismic LISA cruise / Geological Society, London, Special Publications, 156:169-193, doi:10.1144/GSL.SP.1999.156.01.10 --- Pannonian Basin --- Frank Horváth and Gábor Tari: IBS Pannonian Basin project: a review of the main results and their bearings on hydrocarbon exploration / Geological Society, London, Special Publications, 156:195-213, doi:10.1144/GSL.SP.1999.156.01.11 --- Gábor Tari, Péter Dövényi, István Dunkl, Frank Horváth, László Lenkey, Mihai Stefanescu, Péter Szafián, and Tamás Tóth: Lithospheric structure of the Pannonian basin derived from seismic, gravity and geothermal data / Geological Society, London, Special Publications, 156:215-250, doi:10.1144/GSL.SP.1999.156.01.12 --- István Györfi, László Csontos, and András Nagymarosy: Early Tertiary structural evolution of the border zone between the Pannonian and Transylvanian Basins / Geological Society, London, Special Publications, 156:251-267, doi:10.1144/GSL.SP.1999.156.01.13 --- P. Gerner, G. Bada, P. Dövényi, B. Müller, M. C. Oncescu, S. Cloetingh, and F. Horváth: Recent tectonic stress and crustal deformation in and around the Pannonian Basin: data and models / Geological Society, London, Special Publications, 156:269-294, doi:10.1144/GSL.SP.1999.156.01.14 --- László Fodor, László Csontos, Gábor Bada, István Györfi, and László Benkovics: Tertiary tectonic evolution of the Pannonian Basin system and neighbouring orogens: a new synthesis of palaeostress data / Geological Society, London, Special Publications, 156:295-334, doi:10.1144/GSL.SP.1999.156.01.15 --- E. Juhász, L. Phillips, P. Müller, B. Ricketts, Á. Tóth-Makk, M. Lantos, and L. Ó. Kovács: Late Neogene sedimentary facies and sequences in the Pannonian Basin, Hungary / Geological Society, London, Special Publications, 156:335-356, doi:10.1144/GSL.SP.1999.156.01.16 --- Marco Sacchi, Frank Horváth, and Orsolya Magyari: Role of unconformity-bounded units in the stratigraphy of the continental record: a case study from the Late Miocene of the western Pannonian Basin, Hungary / Geological Society, London, Special Publications, 156:357-390, doi:10.1144/GSL.SP.1999.156.01.17 --- R. T. Van Balen, L. Lenkey, F. Horváth, and S. A. P. L. Cloetingh: Two-dimensional modelling of stratigraphy and compaction-driven fluid flow in the Pannonian Basin / Geological Society, London, Special Publications, 156:391-414, doi:10.1144/GSL.SP.1999.156.01.18 --- Eastern Mediterranean --- Denis Hatzfeld: The present-day tectonics of the Aegean as deduced from seismicity / Geological Society, London, Special Publications, 156:415-426, doi:10.1144/GSL.SP.1999.156.01.19 --- L. Jolivet and M. Patriat: Ductile extension and the formation of the Aegean Sea / Geological Society, London, Special Publications, 156:427-456, doi:10.1144/GSL.SP.1999.156.01.20 --- A. L. W. Lips, J. R. Wijbrans, and S. H. White: New insights from 40Ar/39Ar laserprobe dating of white mica fabrics from the Pelion Massif, Pelagonian Zone, Internal Hellenides, Greece: implications for the timing of metamorphic episodes and tectonic events in the Aegean region / Geological Society, London, Special Publications, 156:457-474, doi:10.1144/GSL.SP.1999.156.01.21 --- Aral I. Okay and Okan Tüysüz: Tethyan sutures of northern Turkey / Geological Society, London, Special Publications, 156:475-515, doi:10.1144/GSL.SP.1999.156.01.22 --- General --- P. A. Ziegler and F. Roure: Petroleum systems of Alpine-Mediterranean foldbelts and basins / Geological Society, London, Special Publications, 156:517-540, doi:10.1144/GSL.SP.1999.156.01.23 --- C. Doglioni, E. Gueguen, P. Harabaglia, and F. Mongelli: On the origin of west-directed subduction zones and applications to the western Mediterranean / Geological Society, London, Special Publications, 156:541-561, doi:10.1144/GSL.SP.1999.156.01.24
    Pages: Online-Ressource (IX, 569 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390339
    Language: English
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  • 5
    Unknown
    London : The Geological Society
    Keywords: Carbonatplattform ; Carbonates ; Carbonatos ; Geology, Stratigraphic ; Marine sediments ; Reefs ; Rochas sedimentares ; Rocks, Carbonate
    Description / Table of Contents: V. P. Wright and T. P. Burchette: Carbonate ramps: an introduction / Geological Society, London, Special Publications, 149:1-5, doi:10.1144/GSL.SP.1999.149.01.01 --- W. M. Ahr: Carbonate ramps, 1973–1996: a historical review / Geological Society, London, Special Publications, 149:7-14, doi:10.1144/GSL.SP.1999.149.01.02 --- A. Kirkham: A Quaternary proximal foreland ramp and its continental fringe, Arabian Gulf, UAE / Geological Society, London, Special Publications, 149:15-41, doi:10.1144/GSL.SP.1999.149.01.03 --- Gordon Walkden and Alun Williams: Carbonate ramps and the Pleistocene-Recent depositional systems of the Arabian Gulf / Geological Society, London, Special Publications, 149:43-53, doi:10.1144/GSL.SP.1999.149.01.04 --- Viviane Testa and Dan W. J. Bosence: Carbonate-siliciclastic sedimentation on a high-energy, ocean-facing, tropical ramp, NE Brazil / Geological Society, London, Special Publications, 149:55-71, doi:10.1144/GSL.SP.1999.149.01.05 --- Janice M. Light and John B. Wilson: Cool-water carbonate deposition on the West Shetland Shelf: a modern distally steepened ramp / Geological Society, London, Special Publications, 149:73-105, doi:10.1144/GSL.SP.1999.149.01.06 --- J. Fred Read: Phanerozoic carbonate ramps from greenhouse, transitional and ice-house worlds: clues from field and modelling studies / Geological Society, London, Special Publications, 149:107-135, doi:10.1144/GSL.SP.1999.149.01.07 --- M. Aurell, B. Bádenas, D. W. J. Bosence, and D. A. Waltham: Carbonate production and offshore transport on a Late Jurassic carbonate ramp (Kimmeridgian, Iberian basin, NE Spain): evidence from outcrops and computer modelling / Geological Society, London, Special Publications, 149:137-161, doi:10.1144/GSL.SP.1999.149.01.08 --- Martyn Pedley: A review of sediment distributions and processes in Oligo-Miocene ramps of southern Italy and Malta (Mediterranean divide) / Geological Society, London, Special Publications, 149:163-179, doi:10.1144/GSL.SP.1999.149.01.09 --- Rodney F. Gilham and Charlie S. Bristow: Facies architecture and geometry of a prograding carbonate ramp during the early stages of foreland basin evolution: Lower Eocene sequences, Sierra del Cadí, SE Pyrenees, Spain / Geological Society, London, Special Publications, 149:181-203, doi:10.1144/GSL.SP.1999.149.01.10 --- H. D. Sinclair, Z. R. Sayer, and M. E. Tucker: Carbonate sedimentation during early foreland basin subsidence: the Eocene succession of the French Alps / Geological Society, London, Special Publications, 149:205-227, doi:10.1144/GSL.SP.1999.149.01.11 --- Irene Gómez-Pérez, Pedro A. Fernández-Mendiola, and Joaquín García-Mondéjar: Constructional dynamics for a Lower Cretaceous carbonate ramp (Gorbea Massif, north Iberia) / Geological Society, London, Special Publications, 149:229-252, doi:10.1144/GSL.SP.1999.149.01.12 --- Martina Bachmann and Jochen Kuss: The Middle Cretaceous carbonate ramp of the northern Sinai: sequence stratigraphy and facies distribution / Geological Society, London, Special Publications, 149:253-280, doi:10.1144/GSL.SP.1999.149.01.13 --- Ana C. Azerêdo: Geometry and facies dynamics of Middle Jurassic carbonate ramp sandbodies, West-Central Portugal / Geological Society, London, Special Publications, 149:281-314, doi:10.1144/GSL.SP.1999.149.01.14 --- Kinga Hips: Lower Triassic storm-dominated ramp sequence in northern Hungary: an example of evolution from homoclinal through distally steepened ramp to Middle Triassic flat-topped platform / Geological Society, London, Special Publications, 149:315-338, doi:10.1144/GSL.SP.1999.149.01.15 --- Ákos Török: Controls on development of Mid-Triassic ramps: examples from southern Hungary / Geological Society, London, Special Publications, 149:339-367, doi:10.1144/GSL.SP.1999.149.01.16 --- Zakaria Lasemi, Rodney D. Norby, and Janis D. Treworgy: Depositional facies and sequence stratigraphy of a Lower Carboniferous bryozoan-crinoidal carbonate ramp in the Illinois Basin, mid-continent USA / Geological Society, London, Special Publications, 149:369-395, doi:10.1144/GSL.SP.1999.149.01.17 --- Jobst Wendt and Bernd Kaufmann: Mud buildups on a Middle Devonian carbonate ramp (Algerian Sahara) / Geological Society, London, Special Publications, 149:397-415, doi:10.1144/GSL.SP.1999.149.01.18 --- Bernd Kaufmann: Middle Devonian reef and mud mounds on a carbonate ramp: Mader Basin (eastern Anti-Atlas, Morocco) / Geological Society, London, Special Publications, 149:417-435, doi:10.1144/GSL.SP.1999.149.01.19 --- Yong Seok Choi and J. A. Simo: Ramp facies and sequence stratigraphic models in an epeiric sea: the Upper Ordovician mixed carbonate-siliciclastic Glenwood and Platteville Formations, Wisconsin, USA / Geological Society, London, Special Publications, 149:437-456, doi:10.1144/GSL.SP.1999.149.01.20
    Pages: Online-Ressource (465 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390258
    Language: English
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  • 6
    Keywords: Anden ; Argentinien ; Gondwanaland ; Palöozoikum ; Argentina ; Geology ; Geology, Stratigraphic ; Gondwana (Continent) ; Paleozoic
    Description / Table of Contents: R. J. Pankhurst and C. W. Rapela: The proto-Andean margin of Gondwana: an introduction / Geological Society, London, Special Publications, 142:1-9, doi:10.1144/GSL.SP.1998.142.01.01 --- Ricardo A. Astini: Stratigraphical evidence supporting the rifting, drifting and collision of the Laurentian Precordillera terrane of western Argentina / Geological Society, London, Special Publications, 142:11-33, doi:10.1144/GSL.SP.1998.142.01.02 --- Martin Keller, Werner Buggisch, and Oliver Lehnert: The stratigraphical record of the Argentine Precordillera and its plate-tectonic background / Geological Society, London, Special Publications, 142:35-56, doi:10.1144/GSL.SP.1998.142.01.03 --- Juan L. Benedetto: Early Palaeozoic brachiopods and associated shelly faunas from western Gondwana: their bearing on the geodynamic history of the pre-Andean margin / Geological Society, London, Special Publications, 142:57-83, doi:10.1144/GSL.SP.1998.142.01.04 --- Patricia wood Dickerson and Martin Keller: The Argentine Precordillera: its odyssey from the Laurentian Ouachita margin towards the Sierras Pampeanas of Gondwana / Geological Society, London, Special Publications, 142:85-105, doi:10.1144/GSL.SP.1998.142.01.05 --- Warren D. Huff, Stig M. Bergström, Dennis R. Kolata, Carlos A. Cingolani, and Ricardo A. Astini: Ordovician K-bentonites in the Argentine Precordillera: relations to Gondwana margin evolution / Geological Society, London, Special Publications, 142:107-126, doi:10.1144/GSL.SP.1998.142.01.06 --- Heinrich Bahlburg: The geochemistry and provenance of Ordovician turbidites in the Argentine Puna / Geological Society, London, Special Publications, 142:127-142, doi:10.1144/GSL.SP.1998.142.01.07 --- Victor A. Ramos, R. D. Dallmeyer, and Graciela Vujovich: Time constraints on the Early Palaeozoic docking of the Precordillera, central Argentina / Geological Society, London, Special Publications, 142:143-158, doi:10.1144/GSL.SP.1998.142.01.08 --- Graciela I. Vujovich and Suzanne Mahlburg Kay: A Laurentian? Grenville-age oceanic arc/back-arc terrane in the Sierra de Pie de Palo, Western Sierras Pampeanas, Argentina / Geological Society, London, Special Publications, 142:159-179, doi:10.1144/GSL.SP.1998.142.01.09 --- C. W. Rapela, R. J. Pankhurst, C. Casquet, E. Baldo, J. Saavedra, C. Galindo, and C. M. Fanning: The Pampean Orogeny of the southern proto-Andes: Cambrian continental collision in the Sierras de Córdoba / Geological Society, London, Special Publications, 142:181-217, doi:10.1144/GSL.SP.1998.142.01.10 --- Luis H. Dalla Salda, Mónica G. López de Luchi, Carlos A. Cingolani, and Ricardo Varela: Laurentia-Gondwana collision: the origin of the Famatinian-Appalachian Orogenic Belt (a review) / Geological Society, London, Special Publications, 142:219-234, doi:10.1144/GSL.SP.1998.142.01.11 --- W. Von Gosen and C. Prozzi: Structural evolution of the Sierra de San Luis (Eastern Sierras Pampeanas, Argentina): implications for the Proto-Andean Margin of Gondwana / Geological Society, London, Special Publications, 142:235-258, doi:10.1144/GSL.SP.1998.142.01.12 --- J. P. Sims, T. R. Ireland, A. Camacho, P. Lyons, P. E. Pieters, R. G. Skirrow, P. G. Stuart-Smith, and R. Miró: U-Pb, Th-Pb and Ar-Ar geochronology from the southern Sierras Pampeanas, Argentina: implications for the Palaeozoic tectonic evolution of the western Gondwana margin / Geological Society, London, Special Publications, 142:259-281, doi:10.1144/GSL.SP.1998.142.01.13 --- J. Saavedra, A. Toselli, J. Rossi, E. Pellitero, and F. Durand: The Early Palaeozoic magmatic record of the Famatina System: a review / Geological Society, London, Special Publications, 142:283-295, doi:10.1144/GSL.SP.1998.142.01.14 --- Grady C. Grissom, Susan M. Debari, and Lawrence W. Snee: Geology of the Sierra de Fiambalá, northwestern Argentina: implications for Early Palaeozoic Andean tectonics / Geological Society, London, Special Publications, 142:297-323, doi:10.1144/GSL.SP.1998.142.01.15 --- E. J. Llambías, A. M. Sato, A. Ortiz Suárez, and C. Prozzi: The granitoids of the Sierra de San Luis / Geological Society, London, Special Publications, 142:325-341, doi:10.1144/GSL.SP.1998.142.01.16 --- R. J. Pankhurst, C. W. Rapela, J. Saavedra, E. Baldo, J. Dahlquist, I. Pascua, and C. M. Fanning: The Famatinian magmatic arc in the central Sierras Pampeanas: an Early to Mid-Ordovician continental arc on the Gondwana margin / Geological Society, London, Special Publications, 142:343-367, doi:10.1144/GSL.SP.1998.142.01.17
    Pages: Online-Ressource (383 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390215
    Language: English
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  • 7
    Keywords: Paläogeographie ; Fossile Erdoberfläche ; Geology, Stratigraphic ; Geomorphology ; Intemperismo ; Paleoambientes ; Paleogeography ; Paleopedology
    Description / Table of Contents: M. Widdowson: The geomorphological and geological importance of palaeosurfaces / Geological Society, London, Special Publications, 120:1-12, doi:10.1144/GSL.SP.1997.120.01.01 --- C. R. Twidale: The great age of some Australian landforms: examples of, and possible explanations for, landscape longevity / Geological Society, London, Special Publications, 120:13-23, doi:10.1144/GSL.SP.1997.120.01.02 --- Europe --- Philip S. Ringrose and Piotr Migoń: Analysis of digital elevation data for the Scottish Highlands and recognition of pre-Quaternary elevated surfaces / Geological Society, London, Special Publications, 120:25-35, doi:10.1144/GSL.SP.1997.120.01.03 --- Peter Coxon and Catherine Coxon: A pre-Pliocene or Pliocene land surface in County Galway, Ireland / Geological Society, London, Special Publications, 120:37-55, doi:10.1144/GSL.SP.1997.120.01.04 --- John J. McAlister and Bernard J. Smith: Geochemical trends in Early Tertiary palaeosols from northeast Ireland: a statistical approach to assess element behaviour during weathering / Geological Society, London, Special Publications, 120:57-65, doi:10.1144/GSL.SP.1997.120.01.05 --- David W. Jolley: Palaeosurface palynofloras of the Skye lava field and the age of the British Tertiary volcanic province / Geological Society, London, Special Publications, 120:67-94, doi:10.1144/GSL.SP.1997.120.01.06 --- Karna Lidmar-Bergström, Siv Olsson, and Mats Olvmo: Palaeosurfaces and associated saprolites in southern Sweden / Geological Society, London, Special Publications, 120:95-124, doi:10.1144/GSL.SP.1997.120.01.07 --- Yvonne Battiau-Queney: Preservation of old palaeosurfaces in glaciated areas: examples from the French western Alps / Geological Society, London, Special Publications, 120:125-132, doi:10.1144/GSL.SP.1997.120.01.08 --- W. Brian Whalley, Brice R. Rea, Michelle M. Rainey, and John J. McAlister: Rock weathering in blockfields: some preliminary data from mountain plateaus in North Norway / Geological Society, London, Special Publications, 120:133-145, doi:10.1144/GSL.SP.1997.120.01.09 --- M. Gutiérrez-Elorza and F. J. Gracia: Environmental interpretation and evolution of the Tertiary erosion surfaces in the Iberian Range (Spain) / Geological Society, London, Special Publications, 120:147-158, doi:10.1144/GSL.SP.1997.120.01.10 --- Harald Borger: Environmental changes during the Tertiary: the example of palaeoweathering residues in central Spain / Geological Society, London, Special Publications, 120:159-173, doi:10.1144/GSL.SP.1997.120.01.11 --- E. Molina Ballesteros, J. García Talegón, and M. A. Vicente Hernández: Palaeoweathering profiles developed on the Iberian Hercynian Basement and their relationship to the oldest Tertiary surface in central and western Spain / Geological Society, London, Special Publications, 120:175-185, doi:10.1144/GSL.SP.1997.120.01.12 --- Piotr Migoń: Tertiary etchsurfaces in the Sudetes Mountains, SW Poland: a contribution to the pre-Quaternary morphology of Central Europe / Geological Society, London, Special Publications, 120:187-202, doi:10.1144/GSL.SP.1997.120.01.13 --- Ján Lacika: Neogene palaeosurfaces in the volcanic area of Central Slovakia / Geological Society, London, Special Publications, 120:203-219, doi:10.1144/GSL.SP.1997.120.01.14 --- India --- M. Widdowson: Tertiary palaeosurfaces of the SW Deccan, Western India: implications for passive margin uplift / Geological Society, London, Special Publications, 120:221-248, doi:10.1144/GSL.SP.1997.120.01.15 --- Yanni Gunnell: Topography, palaeosurfaces and denudation over the Karnataka Uplands, southern India / Geological Society, London, Special Publications, 120:249-267, doi:10.1144/GSL.SP.1997.120.01.16 --- M. Widdowson, J. N. Walsh, and K. V. Subbarao: The geochemistry of Indian bole horizons: palaeoenvironmental implications of Deccan intravolcanic palaeosurfaces / Geological Society, London, Special Publications, 120:269-281, doi:10.1144/GSL.SP.1997.120.01.17 --- Africa --- Kevin White, Nick Drake, and John Walden: Remote sensing for mapping palaeosurfaces on the basis of surficial chemistry: a mixed pixel approach / Geological Society, London, Special Publications, 120:283-293, doi:10.1144/GSL.SP.1997.120.01.18 --- D. J. Bowden: The geochemistry and development of lateritized footslope benches: The Kasewe Hills, Sierra Leone / Geological Society, London, Special Publications, 120:295-305, doi:10.1144/GSL.SP.1997.120.01.19 --- South America --- L. Kennan, S. H. Lamb, and L. Hoke: High-altitude palaeosurfaces in the Bolivian Andes: evidence for late Cenozoic surface uplift / Geological Society, London, Special Publications, 120:307-323, doi:10.1144/GSL.SP.1997.120.01.20 --- Errata --- Erratum / Geological Society, London, Special Publications, 120:ERR, doi:10.1144/GSL.SP.1997.120.01.22 --- Erratum / Geological Society, London, Special Publications, 120:ERR, doi:10.1144/GSL.SP.1997.120.01.23
    Pages: Online-Ressource (VI, 330 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799578
    Language: English
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  • 8
    Unknown
    London : The Geological Society
    Keywords: Quartärforschung ; Quartär ; Britische Inseln ; Großbritannien ; Estratigrafia ; Geology ; Geology, Stratigraphic ; Great Britain ; Quartair ; Quaternary
    Description / Table of Contents: R. C. Preece: Introduction - Island Britain: a Quaternary perspective / Geological Society, London, Special Publications, 96:1-2, doi:10.1144/GSL.SP.1995.096.01.01 --- Brian M. Funnell: Global sea-level and the (pen-)insularity of late Cenozoic Britain / Geological Society, London, Special Publications, 96:3-13, doi:10.1144/GSL.SP.1995.096.01.02 --- P. L. Gibbard: The formation of the Strait of Dover / Geological Society, London, Special Publications, 96:15-26, doi:10.1144/GSL.SP.1995.096.01.03 --- D. R. Bridgland and B. D’Olier: The Pleistocene evolution of the Thames and Rhine drainage systems in the southern North Sea Basin / Geological Society, London, Special Publications, 96:27-45, doi:10.1144/GSL.SP.1995.096.01.04 --- Andrew G. Bellamy: Extension of the British landmass: evidence from shelf sediment bodies in the English Channel / Geological Society, London, Special Publications, 96:47-62, doi:10.1144/GSL.SP.1995.096.01.05 --- D. H. Keen: Raised beaches and sea-levels in the English Channel in the Middle and Late Pleistocene: problems of interpretation and implications for the isolation of the British Isles / Geological Society, London, Special Publications, 96:63-74, doi:10.1144/GSL.SP.1995.096.01.06 --- J. D. Scourse and R. M. Austin: Palaeotidal modelling of continental shelves: marine implications of a land-bridge in the Strait of Dover during the Holocene and Middle Pleistocene / Geological Society, London, Special Publications, 96:75-88, doi:10.1144/GSL.SP.1995.096.01.07 --- T. Meijer and R. C. Preece: Malacological evidence relating to the insularity of the British Isles during the Quaternary / Geological Society, London, Special Publications, 96:89-110, doi:10.1144/GSL.SP.1995.096.01.08 --- A. J. Stuart: Insularity and Quaternary vertebrate faunas in Britain and Ireland / Geological Society, London, Special Publications, 96:111-125, doi:10.1144/GSL.SP.1995.096.01.09 --- Antony J. Sutcliffe: Insularity of the British Isles 250 000–30 000 years ago: the mammalian, including human, evidence / Geological Society, London, Special Publications, 96:127-140, doi:10.1144/GSL.SP.1995.096.01.10 --- Alan Turner: Evidence for Pleistocene contact between the British Isles and the European Continent based on distributions of larger carnivores / Geological Society, London, Special Publications, 96:141-149, doi:10.1144/GSL.SP.1995.096.01.11 --- Adrian M. Lister: Sea-levels and the evolution of island endemics: the dwarf red deer of Jersey / Geological Society, London, Special Publications, 96:151-172, doi:10.1144/GSL.SP.1995.096.01.12 --- K. D. Bennett: Insularity and the Quaternary tree and shrub flora of the British Isles / Geological Society, London, Special Publications, 96:173-180, doi:10.1144/GSL.SP.1995.096.01.13 --- Robert J. N. Devoy: Deglaciation, Earth crustal behaviour and sea-level changes in the determination of insularity: a perspective from Ireland / Geological Society, London, Special Publications, 96:181-208, doi:10.1144/GSL.SP.1995.096.01.14 --- Robin T. R. Wingfield: A model of sea-levels in the Irish and Celtic seas during the end-Pleistocene to Holocene transition / Geological Society, London, Special Publications, 96:209-242, doi:10.1144/GSL.SP.1995.096.01.15 --- P. Coxon and S. Waldren: The floristic record of Ireland’s Pleistocene temperate stages / Geological Society, London, Special Publications, 96:243-267, doi:10.1144/GSL.SP.1995.096.01.16
    Pages: Online-Ressource (274 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799403
    Language: English
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  • 9
    Keywords: Bildgebendes Verfahren ; Bohrloch ; Bohrlochmessung ; Bohrlochgeophysik ; Borehole mining ; Geology, Stratigraphic ; Geophysical well logging
    Description / Table of Contents: Stephen E. Prensky: Advances in borehole imaging technology and applications / Geological Society, London, Special Publications, 159:1-43, doi:10.1144/GSL.SP.1999.159.01.01 --- Philip S. Cheung: Microresistivity and ultrasonic imagers: tool operations and processing principles with reference to commonly encountered image artefacts / Geological Society, London, Special Publications, 159:45-57, doi:10.1144/GSL.SP.1999.159.01.02 --- J. C. Lofts and L. T. Bourke: The recognition of artefacts from acoustic and resistivity borehole imaging devices / Geological Society, London, Special Publications, 159:59-76, doi:10.1144/GSL.SP.1999.159.01.03 --- Robert Trice: A methodology for applying a non unique, morphological classification to sine wave events picked from borehole image log data / Geological Society, London, Special Publications, 159:77-90, doi:10.1144/GSL.SP.1999.159.01.04 --- Jeremy Prosser, Stuart Buck, Shaun Saddler, and Vince Hilton: Methodologies for multi-well sequence analysis using borehole image and dipmeter data / Geological Society, London, Special Publications, 159:91-121, doi:10.1144/GSL.SP.1999.159.01.05 --- Malcolm Rider, Tim Goodall, and Tim Dodson: A pre-development turbidite reservoir evaluation using FMS electrical images / Geological Society, London, Special Publications, 159:123-137, doi:10.1144/GSL.SP.1999.159.01.06 --- David J. Went and William C. Fisher: Stratigraphic relationships in the upper Rotliegend: interpretations from horizontal and vertical well borehole images, core and logs in the Lancelot area, Southern North Sea, UK / Geological Society, London, Special Publications, 159:139-153, doi:10.1144/GSL.SP.1999.159.01.07 --- Robert Trice: Application of borehole image logs in constructing 3D static models of productive fracture networks in the Apulian Platform, Southern Apennines / Geological Society, London, Special Publications, 159:155-176, doi:10.1144/GSL.SP.1999.159.01.08 --- R. M. McGarva, C. Bell, and J. Bedford: Use of Resistivity At Bit (RAB) images within an Eocene submarine channel complex, Alba Field, UKCS / Geological Society, London, Special Publications, 159:177-189, doi:10.1144/GSL.SP.1999.159.01.09 --- T. Hansen and D. N. Parkinson: Insights from simultaneous acoustic and resistivity imaging / Geological Society, London, Special Publications, 159:191-201, doi:10.1144/GSL.SP.1999.159.01.10 --- Ian Goodall, Jeremy Lofts, Matthew Mulcahy, Michael Ashton, and Sam Johnson: A sedimentological application of ultrasonic borehole images in complex lithologies: the Lower Kimmeridge Clay Formation, Magnus Field, UKCS / Geological Society, London, Special Publications, 159:203-225, doi:10.1144/GSL.SP.1999.159.01.11 --- Trevor Williams and Carlos Pirmez: FMS Images from carbonates of the Bahama Bank Slope, ODP Leg 166: Lithological identification and cyclo-stratigraphy / Geological Society, London, Special Publications, 159:227-238, doi:10.1144/GSL.SP.1999.159.01.12 --- Laird B. Thompson and J. W. Snedden: Geology and reservoir description of 1Y1 reservoir, Oso Field, Nigeria using FMS and dipmeter / Geological Society, London, Special Publications, 159:239-257, doi:10.1144/GSL.SP.1999.159.01.13 --- D. N. Parkinson, R. J. Dixon, and E. J. Jolley: Contributions of acoustic imaging to the development of the Bruce Field, Northern North Sea / Geological Society, London, Special Publications, 159:259-270, doi:10.1144/GSL.SP.1999.159.01.14 --- L. M. Grace, B. M. Newberry, and J. H. Harper: Fault visualization from borehole images for sidetrack optimization / Geological Society, London, Special Publications, 159:271-281, doi:10.1144/GSL.SP.1999.159.01.15 --- T. S. Brewer, P. K. Harvey, S. Haggas, P. A. Pezard, and D. Goldberg: Borehole images of the ocean crust: case histories from the Ocean Drilling Program / Geological Society, London, Special Publications, 159:283-294, doi:10.1144/GSL.SP.1999.159.01.16
    Pages: Online-Ressource (296 Seiten) , Illustrationen, Diagramme, Tabellen
    ISBN: 1862390436
    Language: English
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  • 10
    Keywords: Atlantischer Ozean Nord ; Jungquartär ; Kontinentalrand ; Paläoozeanographie ; Arctic Ocean Region ; Continental margins ; Geology, Stratigraphic ; North Atlantic Ocean Region ; Paleoceanography ; Quaternary
    Description / Table of Contents: John T. Andrews, William E. N. Austin, Helene Bergsten, and Anne E. Jennings: The Late Quaternary palaeoceanography of North Atlantic margins: an introduction / Geological Society, London, Special Publications, 111:1-6, doi:10.1144/GSL.SP.1996.111.01.01 --- Karen Luise Knudsen and William E. N. Austin: Late glacial foraminifera / Geological Society, London, Special Publications, 111:7-10, doi:10.1144/GSL.SP.1996.111.01.02 --- Canadian North Atlantic Margins --- J. T. Andrews, L. E. Osterman, A. E. Jennings, J. P. M. Syvitski, G. H. Miller, and N. Weiner: Abrupt changes in marine conditions, Sunneshine Fiord, eastern Baffin Island, NWT during the last deglacial transition: Younger Dryas and H-0 events / Geological Society, London, Special Publications, 111:11-27, doi:10.1144/GSL.SP.1996.111.01.03 --- Anne E. Jennings, Kathy A. Tedesco, John T. Andrews, and Matthew E. Kirby: Shelf erosion and glacial ice proximity in the Labrador Sea during and after Heinrich events (H-3 or 4 to H-0) as shown by foraminifera / Geological Society, London, Special Publications, 111:29-49, doi:10.1144/GSL.SP.1996.111.01.04 --- James P. M. Syvitski, C. F. Michael Lewis, David J. W. Piper, and James P. M. Syvitski: Palaeoceanographic information derived from acoustic surveys of glaciated continental margins: examples from eastern Canada / Geological Society, London, Special Publications, 111:51-76, doi:10.1144/GSL.SP.1996.111.01.05 --- R. R. Stea, R. Boyd, O. Costello, G. B. J. Fader, and D. B. Scott: Deglaciation of the inner Scotian Shelf, Nova Scotia: correlation of terrestrial and marine glacial events / Geological Society, London, Special Publications, 111:77-101, doi:10.1144/GSL.SP.1996.111.01.06 --- Frank R. Hall and Stefanie J. Reed: Rock (mineral)-magnetic properties of post-glacial (16–0.5 ka) sediments from the Emerald Basin (Scotian Shelf), Canada / Geological Society, London, Special Publications, 111:103-115, doi:10.1144/GSL.SP.1996.111.01.07 --- Arctic Ocean, East Greenland Margin and Northeastern North Atlantic --- Thomas M. Cronin, Gary S. Dwyer, Paul A. Baker, Julio Rodriguez-Lazaro, and William M. Briggs, Jr: Deep-sea ostracode shell chemistry (Mg:Ca ratios) and Late Quaternary Arctic Ocean history / Geological Society, London, Special Publications, 111:117-134, doi:10.1144/GSL.SP.1996.111.01.08 --- Ruediger Stein, Seung-il Nam, Hannes Grobe, and Hans Hubberten: Late Quaternary glacial history and short-term ice-rafted debris fluctuations along the East Greenland continental margin / Geological Society, London, Special Publications, 111:135-151, doi:10.1144/GSL.SP.1996.111.01.09 --- J. T. Andrews, Anne E. Jennings, T. Cooper, Kerstin M. Williams, and J. Mienert: Late Quaternary sedimentation along a fjord to shelf (trough) transect, East Greenland (c. 68° N) / Geological Society, London, Special Publications, 111:153-166, doi:10.1144/GSL.SP.1996.111.01.10 --- J. C. Duplessy, L. D. Labeyrie, and M. Paterne: North Atlantic sea surface conditions during the Younger Dryas cold event / Geological Society, London, Special Publications, 111:167-175, doi:10.1144/GSL.SP.1996.111.01.11 --- Nalân Koç, Eystein Jansen, Morten Hald, and Laurent Labeyrie: Late glacial-Holocene sea surface temperatures and gradients between the North Atlantic and the Norwegian Sea: implications for the Nordic heat pump / Geological Society, London, Special Publications, 111:177-185, doi:10.1144/GSL.SP.1996.111.01.12 --- Northwestern European and European Arctic Margins --- W. E. N. Austin and D. Kroon: Late glacial sedimentology, foraminifera and stable isotope stratigraphy of the Hebridean Continental Shelf, northwest Scotland / Geological Society, London, Special Publications, 111:187-213, doi:10.1144/GSL.SP.1996.111.01.13 --- J. D. Peacock: Marine mollescan proxy data applied to Scottish late glacial and Flandrian sites: strengths and limitations / Geological Society, London, Special Publications, 111:215-228, doi:10.1144/GSL.SP.1996.111.01.14 --- Ian Shennan, Mairéad M. Rutherford, James B. Innes, and Kevin J. Walker: Late glacial sea level and ocean margin environmental changes interpreted from biostratigraphic and lithostratigraphic studies of isolation basins in northwest Scotland / Geological Society, London, Special Publications, 111:229-244, doi:10.1144/GSL.SP.1996.111.01.15 --- Hui Jiang and Kjell Nordberg: Late Weichselian environmental changes of the southern Kattegat, Scandinavia, inferred from diatom records / Geological Society, London, Special Publications, 111:245-260, doi:10.1144/GSL.SP.1996.111.01.16 --- Niels Richardt: Sedimentological examination of the Late Weichselian sea-level history following deglaciation of northern Denmark / Geological Society, London, Special Publications, 111:261-273, doi:10.1144/GSL.SP.1996.111.01.17 --- Morten Hald, Trond Dokken, and Sveinung Hagen: Palaeoceanography on the European arctic margin during the last deglaciation / Geological Society, London, Special Publications, 111:275-287, doi:10.1144/GSL.SP.1996.111.01.18 --- J. Lloyd, D. Kroon, C. Laban, and G. Boulton: Deglaciation history and palaeoceanography of the western Spitsbergen margin since the last glacial maximum / Geological Society, London, Special Publications, 111:289-301, doi:10.1144/GSL.SP.1996.111.01.19 --- Tore O. Vorren and Jan S. Laberg: Late glacial air temperature, oceanographic and ice sheet interactions in the southern Barents Sea region / Geological Society, London, Special Publications, 111:303-321, doi:10.1144/GSL.SP.1996.111.01.20 --- Leonid Polyak and Valery Mikhailov: Post-glacial environments of the southeastern Barents Sea: foraminiferal evidence / Geological Society, London, Special Publications, 111:323-337, doi:10.1144/GSL.SP.1996.111.01.21 --- Mikko Punkari: Late Weichselian deglaciation of the Barents Sea and low salinity events in the Norwegian Sea / Geological Society, London, Special Publications, 111:339-349, doi:10.1144/GSL.SP.1996.111.01.22 --- Related Topics --- Karin A. F. Zonneveld and Karin P. Boessenkool: Palynology as a tool for land-sea correlation; an example from the eastern Mediterranean region / Geological Society, London, Special Publications, 111:351-357, doi:10.1144/GSL.SP.1996.111.01.23 --- Nils-Axel Mörner: Earth rotation, ocean circulation and palaeoclimate: the North Atlantic — European example / Geological Society, London, Special Publications, 111:359-370, doi:10.1144/GSL.SP.1996.111.01.24
    Pages: Online-Ressource (VI, 376 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799616
    Language: English
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  • 11
    Keywords: Unterkarbon ; Unteres Karbon ; Carboniferous ; Estratigrafia ; Europe ; Geology ; Geology, Stratigraphic ; Mississippian ; New Mexico
    Description / Table of Contents: Peter Strogen, Ian D. Somerville, and Gareth Ll. Jones: Preface / Geological Society, London, Special Publications, 107:vii-ix, doi:10.1144/GSL.SP.1996.107.01.01 --- Mineralization, Hydrocarbons and Diagenesis --- J. D. Johnston, D. Coller, G. Millar, and M. F. Critchley: Basement structural controls on Carboniferous-hosted base metal mineral deposits in Ireland / Geological Society, London, Special Publications, 107:1-21, doi:10.1144/GSL.SP.1996.107.01.02 --- E. Shearley, P. Redmond, M. King, and R. Goodman: Geological controls on mineralization and dolomitization of the Lisheen Zn-Pb-Ag deposit, Co. Tipperary, Ireland / Geological Society, London, Special Publications, 107:23-33, doi:10.1144/GSL.SP.1996.107.01.03 --- Cathy Hollis, Gordon Walkden, and Cathy Hollis: The use of burial diagenetic calcite cements to determine the controls upon hydrocarbon emplacement and mineralization on a carbonate platform, Derbyshire, England / Geological Society, London, Special Publications, 107:35-49, doi:10.1144/GSL.SP.1996.107.01.04 --- C. Veale and J. Parnell: Metal-organic interactions in the Dinantian Solway Basin, UK: inferences for oil migration studies / Geological Society, London, Special Publications, 107:51-63, doi:10.1144/GSL.SP.1996.107.01.05 --- Carbonate Buildups and Waulsortian Mud-Mounds --- Neil A. H. Pickard: Evidence for microbial influence on the development of Lower Carboniferous buildups / Geological Society, London, Special Publications, 107:65-82, doi:10.1144/GSL.SP.1996.107.01.06 --- Wayne M. Ahr and Robert J. Stanton, Jr.: Constituent composition of Early Mississippian carbonate buildups and their level-bottom equivalents, Sacramento Mountains, New Mexico / Geological Society, London, Special Publications, 107:83-95, doi:10.1144/GSL.SP.1996.107.01.07 --- Kent C. Kirkby and Dave Hunt: Episodic growth of a Waulsortian buildup: the Lower Carboniferous Muleshoe Mound, Sacramento Mountains, New Mexico, USA / Geological Society, London, Special Publications, 107:97-110, doi:10.1144/GSL.SP.1996.107.01.08 --- David L. Jeffery and Robert J. Stanton, Jr.: Biotic gradients on a homoclinal ramp: the Alamogordo Member of the Lake Valley Formation, Lower Mississippian, New Mexico, USA / Geological Society, London, Special Publications, 107:111-126, doi:10.1144/GSL.SP.1996.107.01.09 --- Ian D. Somerville, Peter Strogen, Gareth LL. Jones, and H. E. Anne Somerville: Late Viséan buildups at Kingscourt, Ireland: possible precursors for Upper Carboniferous bioherms / Geological Society, London, Special Publications, 107:127-144, doi:10.1144/GSL.SP.1996.107.01.10 --- Sergio Rodríguez: Development of coral reef-facies during the Viséan at Los Santos de Maimona, SW Spain / Geological Society, London, Special Publications, 107:145-152, doi:10.1144/GSL.SP.1996.107.01.11 --- Siliciclastic Rocks --- Carmen Moreno, Sonia Sierra, and Reinaldo Sáez: Evidence for catastrophism at the Famennian-Dinantian boundary in the Iberian Pyrite Belt / Geological Society, London, Special Publications, 107:153-162, doi:10.1144/GSL.SP.1996.107.01.12 --- Kelly Maguire, Jillian Thompson, and Stuart Gowland: Dinantian depositional environments along the northern margin of the Solway Basin, UK / Geological Society, London, Special Publications, 107:163-182, doi:10.1144/GSL.SP.1996.107.01.13 --- John R. Graham: Dinantian river systems and coastal zone sedimentation in northwest Ireland / Geological Society, London, Special Publications, 107:183-206, doi:10.1144/GSL.SP.1996.107.01.14 --- Carbonate Platforms and Ramps --- Giancarlo Rizzi, Colin J. R. Braithwaite, and Giancarlo Rizzi: Cyclic emersion surfaces and channels within Dinantian limestones hosting the giant Navan Zn-Pb deposit, Ireland / Geological Society, London, Special Publications, 107:207-219, doi:10.1144/GSL.SP.1996.107.01.15 --- A. D. Horbury and A. E. Adams: Microfacies associations in Asbian carbonates: an example from the Urswick Limestone Formation of the southern Lake District, northern England / Geological Society, London, Special Publications, 107:221-237, doi:10.1144/GSL.SP.1996.107.01.16 --- Stephen J. Gallagher: The stratigraphy and cyclicity of the late Dinantian platform carbonates in parts of southern and western Ireland / Geological Society, London, Special Publications, 107:239-251, doi:10.1144/GSL.SP.1996.107.01.17 --- John G. Kelly: Initiation, growth and decline of a tectonically controlled Asbian carbonate ramp: Cuilcagh Mountain area, NW Ireland / Geological Society, London, Special Publications, 107:253-262, doi:10.1144/GSL.SP.1996.107.01.18 --- P. Strogen, I. D. Somerville, N. A. H. Pickard, G. LL. Jones, and M. Fleming: Controls on ramp, platform and basinal sedimentation in the Dinantian of the Dublin Basin and Shannon Trough, Ireland / Geological Society, London, Special Publications, 107:263-279, doi:10.1144/GSL.SP.1996.107.01.19 --- Simon Vanstone: The influence of climatic change on exposure surface development: a case study from the Late Dinantian of England and Wales / Geological Society, London, Special Publications, 107:281-301, doi:10.1144/GSL.SP.1996.107.01.20 --- Basinal Facies --- Hans-Jürgen Gursky: Siliceous rocks of the Culm Basin, Germany / Geological Society, London, Special Publications, 107:303-314, doi:10.1144/GSL.SP.1996.107.01.21 --- Zdzislaw Belka, Stanislaw Skompski, and Janina Sobon-Podgorska: Reconstruction of a lost carbonate platform on the shelf of Fennosarmatia: evidence from Viséan polymictic debrites, Holy Cross Mountains, Poland / Geological Society, London, Special Publications, 107:315-329, doi:10.1144/GSL.SP.1996.107.01.22 --- D. Naylor, G. D. Sevastopulo, and A. G. Sleeman: Contemporaneous erosion and reworking within the Dinantian of the South Munster Basin / Geological Society, London, Special Publications, 107:331-343, doi:10.1144/GSL.SP.1996.107.01.23 --- J. G. Rees, J. D. Cornwell, Z. K. Dabek, and R. J. Merriman: The Apedale tuffs, North Staffordshire: probable remnants of a late Asbian/Brigantian (P1a) volcanic centre / Geological Society, London, Special Publications, 107:345-357, doi:10.1144/GSL.SP.1996.107.01.24 --- Faunas, Floras and Biostratigraphy --- Mariya KH. Makhlina: Cyclic stratigraphy, facies and fauna of the Lower Carboniferous (Dinantian) of the Moscow Syneclise and Voronezh Anteclise / Geological Society, London, Special Publications, 107:359-364, doi:10.1144/GSL.SP.1996.107.01.25 --- G. A. Rukina: Sequence biostratigraphy of the Tournaisian-Lower Viséan rocks of the Russian Platform / Geological Society, London, Special Publications, 107:365-369, doi:10.1144/GSL.SP.1996.107.01.26 --- G. LL. Jones and I. D. Somerville: Irish Dinantian biostratigraphy: practical applications / Geological Society, London, Special Publications, 107:371-385, doi:10.1144/GSL.SP.1996.107.01.27 --- O. A. Lebedev: Fish assemblages in the Tournaisian-Viséan environments of the East European Platform / Geological Society, London, Special Publications, 107:387-415, doi:10.1144/GSL.SP.1996.107.01.28 --- A. Ivanov: The Early Carboniferous chondrichthyans of the South Urals, Russia / Geological Society, London, Special Publications, 107:417-425, doi:10.1144/GSL.SP.1996.107.01.29 --- David A. T. Harper and Anna L. Jeffrey: Mid-Dinantian brachiopod biofacies from western Ireland / Geological Society, London, Special Publications, 107:427-436, doi:10.1144/GSL.SP.1996.107.01.30 --- Jim Smith: A palynofacies analysis of the Dinantian (Asbian) Glenade Sandstone Formation of the Leitrim Group, northwest Ireland / Geological Society, London, Special Publications, 107:437-448, doi:10.1144/GSL.SP.1996.107.01.31
    Pages: Online-Ressource (IX, 463 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799586
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  • 12
    Keywords: Nordwesteuropa ; Paläogen ; Stratigraphie ; Tertiär ; Geology, Stratigraphic ; Paleogene ; Geology / Europe, Western ; Stratigraphy ; Western Europe
    Description / Table of Contents: R. W. O’B. Knox: Correlation of the early Paleogene in northwest Europe: an overview / Geological Society, London, Special Publications, 101:1-11, doi:10.1144/GSL.SP.1996.101.01.01 --- Regional Studies: Stratigraphy, Tectonics and Volcanism --- J. E. Neal: A summary of Paleogene sequence stratigraphy in northwest Europe and the North Sea / Geological Society, London, Special Publications, 101:15-42, doi:10.1144/GSL.SP.1996.101.01.02 --- P. A. Nadin and N. J. Kusznir: Forward and reverse stratigraphic modelling of Cretaceous-Tertiary post-rift subsidence and Paleogene uplift in the Outer Moray Firth Basin, central North Sea / Geological Society, London, Special Publications, 101:43-62, doi:10.1144/GSL.SP.1996.101.01.03 --- J. D. Ritchie and K. Hitchen: Early Paleogene offshore igneous activity to the northwest of the UK and its relationship to the North Atlantic Igneous Province / Geological Society, London, Special Publications, 101:63-78, doi:10.1144/GSL.SP.1996.101.01.04 --- Aidan M. Joy: Controls on Eocene sedimentation in the central North Sea Basin: results of a basinwide correlation study / Geological Society, London, Special Publications, 101:79-90, doi:10.1144/GSL.SP.1996.101.01.05 --- David C. Mudge and Jonathan P. Bujak: An integrated stratigraphy for the Paleocene and Eocene of the North Sea / Geological Society, London, Special Publications, 101:91-113, doi:10.1144/GSL.SP.1996.101.01.06 --- J. E. Thomas: The occurrence of the dinoflagellate cyst Apectodinium (Costa & Downie 1976) Lentin & Williams 1977 in the Moray and Montrose Groups (Danian to Thanetian) of the UK central North Sea / Geological Society, London, Special Publications, 101:115-120, doi:10.1144/GSL.SP.1996.101.01.07 --- Susan E. Wood and Richard V. Tyson: An integrated palynological-palynofacies approach to the zonation of the Paleogene in the Forties-Montrose Ridge area, central North Sea / Geological Society, London, Special Publications, 101:121-128, doi:10.1144/GSL.SP.1996.101.01.08 --- Jason R. Ali and David W. Jolley: Chronostratigraphic framework for the Thanetian and lower Ypresian deposits of southern England / Geological Society, London, Special Publications, 101:129-144, doi:10.1144/GSL.SP.1996.101.01.09 --- A. J. Powell, H. Brinkhuis, and J. P. Bujak: Upper Paleocene-Lower Eocene dinoflagellate cyst sequence biostratigraphy of southeast England / Geological Society, London, Special Publications, 101:145-183, doi:10.1144/GSL.SP.1996.101.01.10 --- Richard A. Ellison, Jason R. Ali, Nicolette M. Hine, and David W. Jolley: Recognition of Chron C25n in the upper Paleocene Upnor Formation of the London Basin, UK / Geological Society, London, Special Publications, 101:185-193, doi:10.1144/GSL.SP.1996.101.01.11 --- J. R. Ali, E. A. Hailwood, and C. King: The ‘Oldhaven magnetozone’ in East Anglia: a revised interpretation / Geological Society, London, Special Publications, 101:195-203, doi:10.1144/GSL.SP.1996.101.01.12 --- J. J. Hooker: Mammalian biostratigraphy across the Paleocene-Eocene boundary in the Paris, London and Belgian basins / Geological Society, London, Special Publications, 101:205-218, doi:10.1144/GSL.SP.1996.101.01.13 --- David W. Jolley: The earliest Eocene sediments of eastern England: an ultra-high resolution palynological correlation / Geological Society, London, Special Publications, 101:219-254, doi:10.1144/GSL.SP.1996.101.01.14 --- Alexander G. Mitlehner: Palaeoenvironments in the North Sea Basin around the Paleocene-Eocene boundary: evidence from diatoms and other siliceous microfossils / Geological Society, London, Special Publications, 101:255-273, doi:10.1144/GSL.SP.1996.101.01.15 --- B. Schmitz, C. Heilmann-Clausen, C. King, E. Steurbaut, F. P. Andreasson, R. M. Corfield, and J. E. Cartlidge: Stable isotope and biotic evolution in the North Sea during the early Eocene: the Albæk Hoved section, Denmark / Geological Society, London, Special Publications, 101:275-306, doi:10.1144/GSL.SP.1996.101.01.16 --- Global Perspective: Geochronology and the Oceanic Record --- W. A. Berggren and M.-P. Aubry: A late Paleocene-early Eocene NW European and North Sea magnetobiochronological correlation network / Geological Society, London, Special Publications, 101:309-352, doi:10.1144/GSL.SP.1996.101.01.17 --- Marie-Pierre Aubry, William A. Berggren, Lowell Stott, and Ashish Sinha: The upper Paleocene-lower Eocene stratigraphic record and the Paleocene-Eocene boundary carbon isotope excursion: implications for geochronology / Geological Society, London, Special Publications, 101:353-380, doi:10.1144/GSL.SP.1996.101.01.18 --- Lowell D. Stott, Ashish Sinha, Medard Thiry, Marie-Pierre Aubry, and William A. Berggren: Global δ13C changes across the Paleocene-Eocene boundary: criteria for terrestrial-marine correlations / Geological Society, London, Special Publications, 101:381-399, doi:10.1144/GSL.SP.1996.101.01.19 --- E. Thomas and N. J. Shackleton: The Paleocene-Eocene benthic foraminiferal extinction and stable isotope anomalies / Geological Society, London, Special Publications, 101:401-441, doi:10.1144/GSL.SP.1996.101.01.20 --- Richard M. Corfield and Richard D. Norris: Deep water circulation in the Paleocene Ocean / Geological Society, London, Special Publications, 101:443-456, doi:10.1144/GSL.SP.1996.101.01.21 --- Stella D. Charisi and Birger Schmitz: Early Eocene palaeoceanography and palaeoclimatology of the eastern North Atlantic: stable isotope results for DSDP Hole 550 / Geological Society, London, Special Publications, 101:457-472, doi:10.1144/GSL.SP.1996.101.01.22
    Pages: Online-Ressource (VI, 480 Seiten) , Diagramme, Karten
    ISBN: 1897799470
    Language: English
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  • 13
    Keywords: Biostratigraphie ; Erdölgeologie ; Bioestratigrafia ; Biostratigraphie ; Geology, Economic ; Geology, Stratigraphic ; Géologie économique ; Micropaleontologia ; Paleontology, Stratigraphic ; Petroleum ; Prospecting ; Prospecção geológica ; Pétrole - Géologie ; Stratigraphie
    Description / Table of Contents: R. W. Jones and M. D. Simmons: Preface and Introduction / Geological Society, London, Special Publications, 152:1-3, doi:10.1144/GSL.SP.1999.152.01.01 --- S. N. J. Payne, D. F. Ewen, and M. J. Bowman: The role and value of ‘high-impact biostratigraphy’ in reservoir appraisal and development / Geological Society, London, Special Publications, 152:5-22, doi:10.1144/GSL.SP.1999.152.01.02 --- S. Duxbury, D. Kadolsky, and S. Johansen: Sequence stratigraphic subdivision of the Humber Group in the Outer Moray Firth area (UKCS, North Sea) / Geological Society, London, Special Publications, 152:23-54, doi:10.1144/GSL.SP.1999.152.01.03 --- P. H. Morris, S. N. J. Payne, and D. P. J. Richards: Micropalaeontological biostratigraphy of the Magnus Sandstone Member (Kimmeridgian-Early Volgian), Magnus Field, UK North Sea / Geological Society, London, Special Publications, 152:55-73, doi:10.1144/GSL.SP.1999.152.01.04 --- D. J. Shipp: Well-site biostratigraphy of Danish horizontal wells / Geological Society, London, Special Publications, 152:75-84, doi:10.1144/GSL.SP.1999.152.01.05 --- J. A. Bergen and P. J. Sikora: Microfossil diachronism in southern Norwegian North Sea chalks: Valhall and Hod fields / Geological Society, London, Special Publications, 152:85-111, doi:10.1144/GSL.SP.1999.152.01.06 --- P. J. Sikora, J. A. Bergen, and C. L. Farmer: Chalk palaeoenvironments and depositional model, Valhall-Hod fields, southern Norwegian North Sea / Geological Society, London, Special Publications, 152:113-137, doi:10.1144/GSL.SP.1999.152.01.07 --- M. D. Bidgood, A. G. Mitlehner, G. D. Jones, and D. J. Jutson: Towards a stable and agreed nomenclature for North Sea Tertiary diatom floras — the ‘Coscinodiscus’ problem / Geological Society, London, Special Publications, 152:139-153, doi:10.1144/GSL.SP.1999.152.01.08 --- N. A. Holmes: The Andrew Formation and ‘biosteering’ — different reservoirs, different approaches / Geological Society, London, Special Publications, 152:155-166, doi:10.1144/GSL.SP.1999.152.01.09 --- G. Mangerud, T. Dreyer, L. Søyseth, O. Martinsen, and A. Ryseth: High-resolution biostratigraphy and sequence development of the Palaeocene succession, Grane Field, Norway / Geological Society, London, Special Publications, 152:167-184, doi:10.1144/GSL.SP.1999.152.01.10 --- R. W. Jones: Forties Field (North Sea) revisited: a demonstration of the value of historical micropalaeontological data / Geological Society, London, Special Publications, 152:185-200, doi:10.1144/GSL.SP.1999.152.01.11 --- D. McLean and S. J. Davies: Constraints on the application of palynology to the correlation of Euramerican Late Carboniferous clastic hydrocarbon reservoirs / Geological Society, London, Special Publications, 152:201-218, doi:10.1144/GSL.SP.1999.152.01.12 --- M. D. Simmons, M. D. Bidgood, P. Brenac, P. D. Crevello, J. J. Lambiase, and C. K. Morley: Microfossil assemblages as proxies for precise palaeoenvironmental determination — an example from Miocene sediments of northwest Borneo / Geological Society, London, Special Publications, 152:219-241, doi:10.1144/GSL.SP.1999.152.01.13 --- R. W. Jones, N. E. Jones, A. D. King, and D. Shaw: Reservoir biostratigraphy of the Pedernales Field, Venezuela / Geological Society, London, Special Publications, 152:243-257, doi:10.1144/GSL.SP.1999.152.01.14 --- J. M. Armentrout, L. B. Fearn, K. Rodgers, S. Root, W. D. Lyle, D. C. Herrick, R. B. Bloch, J. W. Snedden, and B. Nwankwo: High-resolution sequence biostratigraphy of a lowstand prograding deltaic wedge: Oso Field (late Miocene), Nigeria / Geological Society, London, Special Publications, 152:259-290, doi:10.1144/GSL.SP.1999.152.01.15 --- C. J. Van Der Zwan and W. A. Brugman: Biosignals from the EA Field, Nigeria / Geological Society, London, Special Publications, 152:291-301, doi:10.1144/GSL.SP.1999.152.01.16 --- B. J. O’Neill, A. E. DuVernay, and R. A. George: Applied palaeontology: a critical stratigraphic tool in Gulf of Mexico exploration and exploitation / Geological Society, London, Special Publications, 152:303-308, doi:10.1144/GSL.SP.1999.152.01.17
    Pages: Online-Ressource (318 Seiten) , Illustrationen, Diagramme ; 25cm + fold out charts
    ISBN: 1862390312
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  • 14
    Keywords: Känozoikum ; Vortiefe ; Westeuropa ; Basins (Geology) ; Europe, Western ; Cenozoic ; Europe ; Geology ; Geology, Stratigraphic
    Description / Table of Contents: B. Durand: Foreword / Geological Society, London, Special Publications, 134:vii-viii, doi:10.1144/GSL.SP.1998.134.01.01 --- Alain Mascle and Cai Puigdefàbregas: Tectonics and sedimentation in foreland basins: results from the Integrated Basin Studies project / Geological Society, London, Special Publications, 134:1-28, doi:10.1144/GSL.SP.1998.134.01.02 --- Guadalquivir and Ebro Foreland Basins (Spain) --- M. Fernàndez, X. Berástegui, C. Puig, D. García-Castellanos, M. J. Jurado, M. Torné, and C. Banks: Geophysical and geological constraints on the evolution of the Guadalquivir foreland basin, Spain / Geological Society, London, Special Publications, 134:29-48, doi:10.1144/GSL.SP.1998.134.01.03 --- X. Berástegui, C.J. Banks, C. Puig, C. Taberner, D. Waltham, and M. Fernàndez: Lateral diapiric emplacement of Triassic evaporites at the southern margin of the Guadalquivir Basin, Spain / Geological Society, London, Special Publications, 134:49-68, doi:10.1144/GSL.SP.1998.134.01.04 --- Edward A. Williams, Mary Ford, Jaume Vergés, and Andrea Artoni: Alluvial gravel sedimentation in a contractional growth fold setting, Sant Llorenç de Morunys, southeastern Pyrenees / Geological Society, London, Special Publications, 134:69-106, doi:10.1144/GSL.SP.1998.134.01.05 --- J. Vergés, M. Marzo, T. Santaeulària, J. Serra-Kiel, D. W. Burbank, J. A. Muñoz, and J. Giménez-Montsant: Quantified vertical motions and tectonic evolution of the SE Pyrenean foreland basin / Geological Society, London, Special Publications, 134:107-134, doi:10.1144/GSL.SP.1998.134.01.06 --- Wouter Nijman: Cyclicity and basin axis shift in a piggyback basin: towards modelling of the Eocene Tremp-Ager Basin, South Pyrenees, Spain / Geological Society, London, Special Publications, 134:135-162, doi:10.1144/GSL.SP.1998.134.01.07 --- Anna Travé, Pierre Labaume, Francesc Calvet, Albert Soler, Jordi Tritlla, Martine Buatier, Jean-Luc Potdevin, Michel Séguret, Suzanne Raynaud, and Louis Briqueu: Fluid migration during Eocene thrust emplacement in the south Pyrenean foreland basin (Spain): an integrated structural, mineralogical and geochemical approach / Geological Society, London, Special Publications, 134:163-188, doi:10.1144/GSL.SP.1998.134.01.08 --- French Western Alps --- W. Henry Lickorish and Mary Ford: Sequential restoration of the external Alpine Digne thrust system, SE France, constrained by kinematic data and synorogenic sediments / Geological Society, London, Special Publications, 134:189-211, doi:10.1144/GSL.SP.1998.134.01.09 --- Andrea Artoni and Lawrence D. Meckel III: History and deformation rates of a thrust sheet top basin: the Barrême basin, western Alps, SE France / Geological Society, London, Special Publications, 134:213-237, doi:10.1144/GSL.SP.1998.134.01.10 --- Yann Philippe, Eric Deville, and Alain Mascle: Thin-skinned inversion tectonics at oblique basin margins: example of the western Vercors and Chartreuse Subalpine massifs (SE France) / Geological Society, London, Special Publications, 134:239-262, doi:10.1144/GSL.SP.1998.134.01.11 --- Christian Beck, Eric Deville, Eric Blanc, Yann Philippe, and Marc Tardy: Horizontal shortening control of Middle Miocene marine siliciclastic accumulation (Upper Marine Molasse) in the southern termination of the Savoy Molasse Basin (northwestern Alps/southern Jura) / Geological Society, London, Special Publications, 134:263-278, doi:10.1144/GSL.SP.1998.134.01.12 --- Swiss, German and Austrian Molasse Basin --- Martin Burkhard and Anna Sommaruga: Evolution of the western Swiss Molasse basin: structural relations with the Alps and the Jura belt / Geological Society, London, Special Publications, 134:279-298, doi:10.1144/GSL.SP.1998.134.01.13 --- J. Zweigel, T. Aigner, and H. Luterbacher: Eustatic versus tectonic controls on Alpine foreland basin fill: sequence stratigraphy and subsidence analysis in the SE German Molasse / Geological Society, London, Special Publications, 134:299-323, doi:10.1144/GSL.SP.1998.134.01.14 --- J. Zweigel: Reservoir analogue modelling of sandy tidal sediments, Upper Marine Molasse, SW Germany, Alpine foreland basin / Geological Society, London, Special Publications, 134:325-337, doi:10.1144/GSL.SP.1998.134.01.15 --- Ludwig R. Wagner: Tectono-stratigraphy and hydrocarbons in the Molasse Foredeep of Salzburg, Upper and Lower Austria / Geological Society, London, Special Publications, 134:339-369, doi:10.1144/GSL.SP.1998.134.01.16 --- Numerical Modelling --- Stefan Bornholdt and Hildegard Westphal: Automation of stratigraphic simulations: quasi-backward modelling using genetic algorithms / Geological Society, London, Special Publications, 134:371-379, doi:10.1144/GSL.SP.1998.134.01.17 --- Taco den Bezemer, Henk Kooi, Yuri Podladchikov, and Sierd Cloetingh: Numerical modelling of growth strata and grain-size distributions associated with fault-bend folding / Geological Society, London, Special Publications, 134:381-401, doi:10.1144/GSL.SP.1998.134.01.18 --- B. Andeweg and S. Cloetingh: Flexure and ‘unflexure’ of the North Alpine German-Austrian Molasse Basin: constraints from forward tectonic modelling / Geological Society, London, Special Publications, 134:403-422, doi:10.1144/GSL.SP.1998.134.01.19
    Pages: Online-Ressource (VIII, 427 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390150
    Language: English
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  • 15
    Unknown
    London : The Geological Society
    Keywords: Archaikum (Geologie) ; Präkambrium ; Archaean ; Geology, Stratigraphic ; Geology, Structural ; Plate tectonics ; Précambrien ; Stratigraphie - Précambrien ; Tectonique des plaques
    Description / Table of Contents: Maarten J. De Wit and Andrew Hynes: The onset of interaction between the hydrosphere and oceanic crust, and the origin of the first continental lithosphere / Geological Society, London, Special Publications, 95:1-9, doi:10.1144/GSL.SP.1995.095.01.01 --- Kenneth A. Eriksson: Crustal growth, surface processes, and atmospheric evolution on the early Earth / Geological Society, London, Special Publications, 95:11-25, doi:10.1144/GSL.SP.1995.095.01.02 --- E. G. Nisbet: Archaean ecology: a review of evidence for the early development of bacterial biomes, and speculations on the development of a global-scale biosphere / Geological Society, London, Special Publications, 95:27-51, doi:10.1144/GSL.SP.1995.095.01.03 --- R. M. Shackleton: Tectonic evolution of greenstone belts / Geological Society, London, Special Publications, 95:53-65, doi:10.1144/GSL.SP.1995.095.01.04 --- P. Choukroune, H. Bouhallier, and N. T. Arndt: Soft lithosphere during periods of Archaean crustal growth or crustal reworking / Geological Society, London, Special Publications, 95:67-86, doi:10.1144/GSL.SP.1995.095.01.05 --- Peter J. Treloar and Tom G. Blenkinsop: Archaean deformation patterns in Zimbabwe: true indicators of Tibetan-style crustal extrusion or not? / Geological Society, London, Special Publications, 95:87-107, doi:10.1144/GSL.SP.1995.095.01.06 --- James F. Wilson, Robert W. Nesbitt, and C. Mark Fanning: Zircon geochronology of Archaean felsic sequences in the Zimbabwe craton: a revision of greenstone stratigraphy and a model for crustal growth / Geological Society, London, Special Publications, 95:109-126, doi:10.1144/GSL.SP.1995.095.01.07 --- Alec F. Trendall: Paradigms for the Pilbara / Geological Society, London, Special Publications, 95:127-142, doi:10.1144/GSL.SP.1995.095.01.08 --- John S. Myers: The generation and assembly of an Archaean supercontinent: evidence from the Yilgarn craton, Western Australia / Geological Society, London, Special Publications, 95:143-154, doi:10.1144/GSL.SP.1995.095.01.09 --- D. I. Groves, J. R. Ridley, E. M. J. Bloem, M. Gebre-Mariam, S. G. Hagemann, J. M. A. Hronsky, J. T. Knight, N. J. McNaughton, J. Ojala, R. M. Vielreicher, T. C. McCuaig, and P. W. Holyland: Lode-gold deposits of the Yilgarn block: products of Late Archaean crustal-scale overpressured hydrothermal systems / Geological Society, London, Special Publications, 95:155-172, doi:10.1144/GSL.SP.1995.095.01.10 --- R. J. Herrington: Late Archaean structure and gold mineralization in the Kadoma region of the Midlands greenstone belt, Zimbabwe / Geological Society, London, Special Publications, 95:173-191, doi:10.1144/GSL.SP.1995.095.01.11 --- David Bridgwater, Flemming Mengel, Brian Fryer, Paul Wagner, and Søren Claudius Hansen: Early Proterozoic mafic dykes in the North Atlantic and Baltic cratons: field setting and chemistry of distinctive dyke swarms / Geological Society, London, Special Publications, 95:193-210, doi:10.1144/GSL.SP.1995.095.01.12 --- R. G. Park: Palaeoproterozoic Laurentia-Baltica relationships: a view from the Lewisian / Geological Society, London, Special Publications, 95:211-224, doi:10.1144/GSL.SP.1995.095.01.13 --- Timothy James Wynn: Deformation in the mid to lower continental crust: analogues from Proterozoic shear zones in NW Scotland / Geological Society, London, Special Publications, 95:225-241, doi:10.1144/GSL.SP.1995.095.01.14 --- Mike P. Coward, Richard M. Spencer, and Camille E. Spencer: Development of the Witwatersrand Basin, South Africa / Geological Society, London, Special Publications, 95:243-269, doi:10.1144/GSL.SP.1995.095.01.15 --- R. H. Graham: Asian analogues for Precambrian tectonics? / Geological Society, London, Special Publications, 95:271-289, doi:10.1144/GSL.SP.1995.095.01.16
    Pages: Online-Ressource (VIII, 295 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799365
    Language: English
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  • 16
    Publication Date: 2021-11-03
    Description: Stable organic carbon and nitrogen isotopes can be used to interpret past vegetation patterns and ecosystem qualities. Here we present these proxies for two loess-palaeosol sequences from the southern Carpathian Basin to reconstruct the palaeoenvironment during the past 350 ka and establish regional commonalities and differences. Until now, isotopic studies on loess sequences from this region were only conducted on deposits from the last glacial cycle. We conducted methodological tests concerning the complete decalcification of the samples prior to stable isotope analyses. Two decalcification methods (fumigation method and wet chemical acidification), different treatment times, and the reproducibility of carbon isotope analyses were tested. Obtained results indicate that the choice of the decalcification method is essential for organic carbon stable isotope analyses of loess-palaeosol sequences because ratios vary by more than 10‰ between the wet chemical and fumigation methods, due to incomplete carbonate removal by the latter. Therefore, we suggest avoiding the fumigation method for studies on loess-palaeosol sequences. In addition, our data show that samples with TOC content 〈0.2% bear increased potential for misinterpretation of their carbon isotope ratios. For our sites, C3-vegetation is predominant and no palaeoenvironmental shifts leading to a change of the dominant photosynthesis pathway can be detected during the Middle to Late Pleistocene. Furthermore, the potential for further stable nitrogen isotope studies is highlighted, since this proxy seems to reflect especially past precipitation patterns and reveals favourable conditions in the southern Carpathian Basin, especially during interstadials.
    Keywords: 551 ; southern Carpathian Basin ; loess-palaeosol sequences ; stable isotope analyses ; Pleistocene ecosystem reconstruction
    Language: English
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  • 17
    Publication Date: 2021-11-03
    Description: In Antarctic and Subantarctic environments, 14C-based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C-free) carbon in ice marginal settings. In this study, we evaluate possible benefits and challenges of compound-specific radiocarbon analysis (CSRA) as a tool for age determination of marine Antarctic and Subantarctic sediment sequences. We present a comprehensive data set of 14C ages obtained on bulk organic carbon, carbonates, and on fatty acids (FA) from three coastal marine sediment cores from Subantarctic South Georgia and East Antarctica. Low molecular weight (LMW) FA represent the least 14C-depleted fraction, indicating that the phytoplankton-derived compounds can be a means of dating sediments. In contrast, vascular plant-derived high molecular weight FA are systematically depleted in 14C relative to the low molecular weight homologues, reflecting processes such as soil formation/erosion in the catchment. Comparative age-depth models show significant differences, depending on the material used for the respective models. While the land plant-derived FA may lead to an overestimation of the actual sediment age, LMW FA reveal complex aquatic reservoir effects. Bulk sedimentary organic carbon 14C ages likely provide appropriate age estimates in settings with low petrogenic carbon input in the Antarctic, whereas CSRA has the potential to produce improved age control in settings with high contributions of petrogenic carbon.
    Keywords: 551 ; Antarctica ; marine sediments ; compound‐specific radiocarbon analysis (CSRA)
    Language: English
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  • 18
    Publication Date: 2021-10-28
    Description: It is widely assumed that the ventilation of the Southern Ocean played a crucial role in driving glacial-interglacial atmospheric CO2 levels. So far, however, ventilation records from the Indian sector of the Southern Ocean are widely missing. Here we present reconstructions of water residence times (depicted as ΔΔ14C and Δδ13C) for the last 32,000 years on sediment records from the Kerguelen Plateau and the Conrad Rise (~570- to 2,500-m water depth), along with simulated changes in ocean stratification from a transient climate model experiment. Our data indicate that Circumpolar Deep Waters in the Indian Ocean were part of the glacial carbon pool. At our sites, close to or bathed by upwelling deep waters, we find two pulses of decreasing ΔΔ14C and δ13C values (~21–17 ka; ~15–12 ka). Both transient pulses precede a similar pattern in downstream intermediate waters in the tropical Indian Ocean as well as rising atmospheric CO2 values. These findings suggest that 14C-depleted, CO2-rich Circumpolar Deep Water from the Indian Ocean contributed to the rise in atmospheric CO2 during Heinrich Stadial 1 and also the Younger Dryas and that the southern Indian Ocean acted as a gateway for sequestered carbon to the atmosphere and tropical intermediate waters.
    Keywords: 551 ; radiocarbon ; ventilation ; Southern Ocean ; Younger Dryas ; carbon cycle ; Indian Ocean
    Language: English
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  • 19
    Publication Date: 2021-10-28
    Description: There is a converging body of evidence supporting a measurable slowdown of the Atlantic Meridional Overturning Circulation (AMOC) as climate warms and Northern Hemisphere ice sheets inexorably shrink. Within this context, we assess the variability of the AMOC during the Holocene based on a marine sediment core retrieved from the deep northwest Atlantic, which sensitively recorded large-scale deglacial transitions in deep water circulation. While there is a diffuse notion of Holocene variability in Labrador and Nordic Seas overturning, we report a largely invariable deep water circulation for the last ~11,000 years, even during the meltwater pulse associated with the 8.2-ka event. Sensitivity tests along with high-resolution 231Pa/230Th data constrain the duration and the magnitude of possible Holocene AMOC variations. The generally constant baseline during the Holocene suggests attenuated natural variability of the large-scale AMOC on submillennial timescales and calls for compensating effects involving the upstream components of North Atlantic Deep Water.
    Keywords: 551 ; AMOC ; Holocene ; high resolution 231Pa/230Th ; Bermuda Rise ; sensitivity tests
    Language: English
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  • 20
    Publication Date: 2021-10-29
    Description: Tunnel valleys are major features of glaciated margins and they enable meltwater expulsion from underneath a thick ice cover. Their formation is related to the erosion of subglacial sediments by overpressured meltwater and direct glacial erosion. Yet, the impact of pre-existing structures on their formation and morphology remains poorly known. High-quality 3D seismic data allowed the mapping of a large tunnel valley that eroded underlying preglacial delta deposits in the southern North Sea. The valley follows the N–S strike of crestal faults related to a Zechstein salt wall. A change in downstream tunnel valley orientation towards the SE accompanies a change in the strike direction of salt-induced faults. Fault offsets indicate important activity of crestal faults during the deposition of preglacial deltaic sediments. We propose that crestal faults facilitated tunnel valley erosion by acting as high-permeability pathways and allowing subglacial meltwater to reach low-permeability sediments in the underlying Neogene deltaic sequences, ultimately resulting in meltwater overpressure build-up and tunnel valley excavation. Active faults probably also weakened the near-surface sediment to allow a more efficient erosion of the glacial substrate. This control of substrate structures on tunnel valley morphology is considered as a primary factor in subglacial drainage pattern development in the study area.
    Keywords: 551 ; southern North Sea ; Quarternary ; tunnel valley formation ; salt-induced faults
    Language: English
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  • 21
    Publication Date: 2021-10-29
    Description: The timing and mechanisms of the Cretaceous sea incursions into Central Asia are still poorly constrained. We provide a new chronostratigraphic framework based on biostratigraphy and magnetostratigraphy together with detailed paleoenvironmental analyses of Cretaceous records of the proto-Paratethys Sea fluctuations in the Tajik and Tarim basins. The Early Cretaceous marine incursion in the western Tajik Basin was followed by major marine incursions during the Cenomanian (ca. 100 Ma) and Santonian (ca. 86 Ma) that reached far into the eastern Tajik and Tarim basins. These marine incursions were separated by a Turonian-Coniacian (ca. 92–86 Ma) regression. Basin-wide tectonic subsidence analyses imply that the Early Cretaceous sea incursion into the Tajik Basin was related to increased Pamir tectonism. We find that thrusting along the northern edge of the Pamir at ca. 130–90 Ma resulted in increased subsidence in a retro-arc basin setting. This tectonic event and coeval eustatic highstand resulted in the maximum observed geographic extent of the sea during the Cenomanian (ca. 100 Ma). The following Turonian-Coniacian (ca. 92–86 Ma) major regression, driven by eustasy, coincides with a sharp slowdown in tectonic subsidence during the late orogenic unloading period with limited thrusting. The Santonian (ca. 86 Ma) major sea incursion was likely controlled by eustasy as evidenced by the coeval fluctuations in the west Siberian Basin. An early Maastrichtian cooling (ca. 71–70 Ma), potentially connected to global Late Cretaceous trends, is inferred from the replacement of mollusk-rich limestones by bryozoan- and echinoderm-rich limestones.
    Keywords: 551 ; Tajik Basin ; Tarim Basin ; Cretaceous sea incursions ; tectonic subsidence ; proto‐Paratethys Sea
    Language: English
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  • 22
    Publication Date: 2021-10-29
    Description: Columnar jointed lava is an important facies in many geothermal reservoir systems. The permeability of jointed lavas is dominated by the contribution from fracture networks. We use a scaling for the permeability of a set of fractures in a solid or porous mass and extend this to arrays of hexagonal intercolumn fractures. To validate our analytical results, we create numerical domains with relevant geometries and extract system-scale permeability using the LBflow lattice-Boltzmann fluid flow simulation tool. Finally, we model the cooling contraction of columns to extend our results so that they predict the permeability with time after lava emplacement. Importantly, we use these results to estimate the range of permeabilities typical of columnar joints that form during cooling from high temperature and are preserved in the crust at moderate to low temperatures.
    Keywords: 551 ; fractured lavas ; permeability ; prediction
    Language: English
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  • 23
    Publication Date: 2021-09-27
    Description: Detailed organic geochemical and carbon isotopic (δ13C and Δ14C) analyses are performed on permafrost deposits affected by coastal erosion (Herschel Island, Canadian Beaufort Sea) and adjacent marine sediments (Herschel Basin) to understand the fate of organic carbon in Arctic nearshore environments. We use an end-member model based on the carbon isotopic composition of bulk organic matter to identify sources of organic carbon. Monte Carlo simulations are applied to quantify the contribution of coastal permafrost erosion to the sedimentary carbon budget. The models suggest that ~40% of all carbon released by local coastal permafrost erosion is efficiently trapped and sequestered in the nearshore zone. This highlights the importance of sedimentary traps in environments such as basins, lagoons, troughs, and canyons for the carbon sequestration in previously poorly investigated, nearshore areas.
    Keywords: 551 ; permafrost ; coastal erosion ; biomarker ; radiocarbon ; carbon flux ; carbon burial
    Language: English
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  • 24
    Publication Date: 2021-10-07
    Description: The transition from the Pliocene to the Pleistocene was accompanied by major tectonic reorganizations of key oceanic gateways. In particular, the gradual closure of the Panama Gateway and the constriction of the Indonesian Gateway significantly affected the structure of the Pacific thermocline. In the East Pacific, the thermocline shoaled from an early Pliocene El Niño-like depth to its modern state, which had significant implications for global climate. Here we use Mg/Ca temperature estimates from subsurface and thermocline dwelling foraminifera to reconstruct the meridional Plio-Pleistocene evolution of the Southeast Pacific thermocline, in relation to atmospheric circulation changes. In combination with similar reconstructions from the north-equatorial Pacific, our data indicate a change in the thermocline, responding to the northward displacement of the Intertropical Convergence Zone/South Pacific High system between ~3.8 and 3.5 Ma. After 3.5 Ma, we record a second major phase of thermocline shoaling, which points to the Intertropical Convergence Zone/South Pacific High-system movement toward its modern position along with the gradual cooling of the Northern Hemisphere and its associated glaciation. These findings highlight that a warming globe may affect equatorial regions more intensively due to the potential temperature-driven movement of the Intertropical Convergence Zone/South Pacific High and their associated oceanic systems.
    Keywords: 551 ; ITCZ ; South Pacific High ; Plio-Pleistocene ; El Niño ; thermocline
    Language: English
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  • 25
    Publication Date: 2021-10-07
    Description: The brittle-ductile transition is a domain of finite extent characterized by high differential stress where both brittle and ductile deformation are likely to occur. Understanding its depth location, extent, and stability through time is of relevance for diverse applications including subduction dynamics, mantle-surface interactions, and, more recently, proper targeting of high-enthalpy unconventional geothermal resources, where local thermal conditions may activate ductile creep at shallower depths than expected. In this contribution, we describe a thermodynamically consistent physical framework and its numerical implementation, therefore extending the formulation of the companion paper Jacquey and Cacace (2020, https://doi.org/10.1029/2019JB018474) to model thermo-hydro-mechanical coupled processes responsible for the occurrence of transitional semi-brittle, semi-ductile behavior in porous rocks. We make use of a damage rheology to account for the macroscopic effects of microstructural processes leading to brittle-like material weakening and of a rate-dependent plastic model to account for ductile material behavior. Our formulation additionally considers the role of porosity and its evolution during loading in controlling the volumetric mechanical response of a stressed rock. By means of dedicated applications, we discuss how our damage poro-visco-elasto-viscoplastic rheology can effectively reconcile the style of localized deformation under different confining pressure conditions as well as the bulk macroscopic material response as recorded by laboratory experiments under full triaxial conditions.
    Keywords: 551 ; lithosphere ; brittle-ductile transition ; modeling
    Language: English
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  • 26
    Publication Date: 2021-10-07
    Description: This paper presents evidence for a limnological response to the Laacher See eruption (LSE) as detected in lake sediments from Nahe, northern Germany. The sediment section of the Allerød period dating to between 13 422 and 12 708 cal. a BP is preserved in annual laminations. Within this section, the LSE was identified as a cryptotephra layer (12 944±44 cal. a BP). Microfacies analysis, continuous high-resolution geochemical measurements and pollen analyses enabled a high-resolution reconstruction of environmental change. The older part of the Allerød (c. 13 422 to 12 943 cal. a BP) was characterized by relatively stable sedimentation conditions. Evidence for windier conditions dating to c. 13 160 to 13 080 cal. a BP probably reflects the Gerzensee oscillation. Pronounced changes of the lake sedimentation followed the LSE. Four unusually thick varves with increased amounts of allochthonous material indicate serious disturbance of the local environment immediately after the LSE, related to increased storminess and/or the occurrence of high intensity rainfall events. A pronounced reduction of biogenic silica accumulation for c. 60 years after the LSE could reflect a period of acidification. Indications of a simultaneous lake level increase until c. 60 years after the LSE are in line with the supposed reduced evapotranspiration associated with cooler conditions. About 120 years after the LSE, increased oxygen access at the lake bottom, allochthonous input and Cl fluxes point to an onset of increasingly stronger westerly winds, probably as a long-term response to the LSE. This supports the idea of a southward shift of the mid-latitude westerlies wind system within the interval between the LSE and the beginning of the Younger Dryas. The pace of the southwards shift of this wind system decreased from 10 km a−1 in the initial phase (40–120 years after LSE) to 6 km a−1 in the later phase (120–200 years after LSE).
    Keywords: 551 ; Laacher See eruption (LSE) ; lake sediments
    Language: English
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  • 27
    Publication Date: 2021-10-15
    Description: Upwelling ocean currents associated with oxygen minimum zones (OMZs) supply nutrients fuelling intense marine productivity. Perturbations in the extent and intensity of OMZs are projected in the future, but it is currently uncertain how this will impact fluxes of redox-sensitive trace metal micronutrients to the surface ocean. Here we report seawater concentrations of Fe, Mn, Co, Cd, and Ni alongside the redox indicator iodide/iodate in the Peruvian OMZ during the 2015 El Niño event. The El Niño drove atypical upwelling of oxygen-enriched water over the Peruvian Shelf, resulting in oxidized iodine and strongly depleted Fe (II), total dissolved Fe, and reactive particulate Fe concentrations relative to non-El Niño conditions. Observations of Fe were matched by the redox-sensitive micronutrients Co and Mn, but not by non-redox-sensitive Cd and Ni. These observations demonstrate that oxygenation of OMZs significantly reduces water column inventories of redox-sensitive micronutrients, with potential impacts on ocean productivity.
    Keywords: 551 ; iron ; trace metals ; oxygen minimum zone ; El Niño ; eastern tropical south pacific ; shelf source
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  • 28
    Publication Date: 2021-10-15
    Description: Heat transport in natural porous media, such as aquifers or streambeds, is generally modeled assuming local thermal equilibrium (LTE) between the fluid and solid phases. Yet, the mathematical and hydrogeological conditions and implications of this simplification have not been fully established for natural porous media. To quantify the occurrence and effects of local thermal disequilibrium during heat transport, we systematically compared thermal breakthrough curves from a LTE with those calculated using a local thermal nonequilibrium (LTNE) model, explicitly allowing for different temperatures in the fluid and solid phases. For the LTNE model, we developed a new correlation for the heat transfer coefficient representative of the conditions in natural porous aquifers using six published experimental results. By conducting an extensive parameter study (〉50,000 simulations), we show that LTNE effects do not occur for grain sizes smaller than 7 mm or for groundwater flow velocities that are slower than 1.6 m day−1. The limits of LTE are likely exceeded in gravel aquifers or in the vicinity of pumped bores. For such aquifers, the use of a LTE model can lead to an underestimation of the effective thermal dispersion by a factor of up to 30 or higher, while the advective thermal velocity remains unaffected for most conditions. Based on a regression analysis of the simulation results, we provide a criterion which can be used to determine if LTNE effects are expected for particular conditions.
    Keywords: 551 ; local thermal nonequilibrium ; thermal dispersion ; modeling advective heat transport ; local thermal equilibrium ; porous aquifer
    Language: English
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  • 29
    Publication Date: 2021-10-15
    Description: Tunnel valleys are assumed to form near the margin of ice sheets. Hence, they can be used to reconstruct the dynamics of former ice margins. The detailed formation and infill of tunnel valleys, however, are still not well understood. Here, we present a dense grid of high-resolution 2D multi-channel reflection seismic data from the German sector of the southeastern North Sea imaging tunnel valleys in very great detail. Three tunnel valley systems were traced over distances ranging between 11 and 21 km. All tunnel valleys are completely filled and buried. They differ in incision depth, incision width and number of incisions. The tunnel valleys cut 130–380 m deep into Neogene, Palaeogene and Cretaceous sediments; they show a lower V-shaped and an upper U-shaped morphology. For individual tunnel valleys, the overall incision direction ranges from east–west to northeast–southwest. Two tunnel valleys intersect at an oblique angle without reuse of the thalweg. These valleys incise into a pre-existing glaciotectonic complex consisting of thrust sheets in the northwest of the study area. The analysis of the glaciotectonic complex and the tunnel valleys leads us to assume that we identified several marginal positions of (pre-)Elsterian ice lobes in the southeastern North Sea.
    Keywords: 551 ; 622.15 ; glaciogenic unconformity ; glaciotectonic complex ; ice margin ; Quaternary succession ; tunnel valleys
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  • 30
    Publication Date: 2021-10-15
    Description: The climate of the western Mediterranean was characterized by a strong precipitation gradient during the Holocene driven by atmospheric circulation patterns. The scarcity of terrestrial paleoclimate archives has precluded exploring this hydroclimate pattern during Marine Isotope Stages 5 to 3. Here we present stable carbon and oxygen isotope records from three flowstones from southeast Iberia, which show that Dansgaard/Oeschger events were associated with more humid conditions. This is in agreement with other records from the Iberian Peninsula, the Mediterranean, and western Europe, which all responded in a similar way to millennial-scale climate variability in Greenland. This general increase in precipitation during Dansgaard/Oeschger events cannot be explained by any present-day or Holocene winter atmospheric circulation pattern. Instead, we suggest that changes in sea surface temperature played a dominant role in determining precipitation amounts in the western Mediterranean.
    Keywords: 551 ; Spain ; last glacial ; Dansgaard/Oeschger ; speleothem ; Marine Isotope Stage 3 ; western Mediterranean climate
    Language: English
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  • 31
    Publication Date: 2021-10-15
    Description: The Middle Eocene Climatic Optimum (MECO) was a gradual warming event and carbon cycle perturbation that occurred between 40.5 and 40.1 Ma. A number of characteristics, including greater-than-expected deep-sea carbonate dissolution, a lack of globally coherent negative δ13C excursion in marine carbonates, a duration longer than the characteristic timescale of carbon cycle recovery, and the absence of a clear trigger mechanism, challenge our current understanding of the Earth system and its regulatory feedbacks. This makes the MECO one of the most enigmatic events in the Cenozoic, dubbed a middle Eocene “carbon cycle conundrum.” Here we use boron isotopes in planktic foraminifera to better constrain pCO2 changes over the event. Over the MECO itself, we find that pCO2 rose by only 0.55–0.75 doublings, thus requiring a much more modest carbon injection than previously indicated by the alkenone δ13C-pCO2 proxy. In addition, this rise in pCO2 was focused around the peak of the 400 kyr warming trend. Before this, considerable global carbonate δ18O change was asynchronous with any coherent ocean pH (and hence pCO2) excursion. This finding suggests that middle Eocene climate (and perhaps a nascent cryosphere) was highly sensitive to small changes in radiative forcing.
    Keywords: 551 ; boron isotopes ; pCO2 reconstruction ; Middle Eocene Climatic Optimum ; carbon cycle ; paleoclimate ; cryosphere
    Language: English
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  • 32
    Publication Date: 2021-10-15
    Description: Millennial-scale reductions in monsoon precipitation, so-called Weak Monsoon Intervals (WMIs), have been identified in numerous paleoclimate records across the Afro-Asian monsoon domain throughout the last glacial-interglacial cycle. These are considered the regional response to cooling during Heinrich events in the North Atlantic realm and several mechanisms have been suggested to explain this hemisphere-scale climatic teleconnection. In particular, reductions in Indian Ocean sea surface temperature (SST) have been proposed as the linking element between Heinrich events and WMIs. However, the validity of this relationship has only been demonstrated for the last ~20 kyr, leaving unresolved whether it also holds on longer time scales. Here we present a new paired record of planktonic foraminifera-based δ18Osw-ivc and UK'37-based SST from the northern Bay of Bengal, covering the last ~130 kyr. The δ18Osw-ivc record clearly reflects orbitally paced changes of Indian Summer Monsoon intensity superimposed by centennial- to millennial-scale WMIs that occurred synchronously to North Atlantic Heinrich events. Comparison with the UK'37-based SST reconstruction reveals, however, that WMIs in most cases were not paralleled by ocean surface cooling, questioning whether Indian Ocean SST lowering was the linking element between Heinrich events and reductions in monsoon precipitation in Asia also during the last glacial period.
    Keywords: 551 ; Indian Summer Monsoon ; Weak Monsoon Intervals ; marine sediments ; Bay of Bengal ; foraminifera oxygen isotopes ; UK'37 sea surface temperature
    Language: English
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  • 33
    Publication Date: 2021-10-27
    Description: Vertical and horizontal components of GNSS displacements in the Long Valley Caldera and adjacent Sierra Nevada range show a clear correlation with hydrological trends at both multiyear and seasonal time scales. We observe a clear vertical and horizontal seasonal deformation pattern primarily attributable to the solid earth response to hydrological surface loading at large-to-regional (Sierra Nevada range) scales. Several GNSS sites, located at the eastern edge of the Sierra Nevada along the southwestern rim of Long Valley Caldera, also show significant horizontal deformation that cannot be explained by elastic deformation from surface loading. Due to the location of these sites and the strong correlation between their horizontal displacements and spring discharge, we hypothesize that this deformation reflects poroelastic processes related to snowmelt runoff water infiltrating into the Sierra Nevada slopes around Long Valley Caldera. Interestingly, this is also an area where water infiltrates to feed the local hydrothermal system, and where snowmelt-induced earthquake swarms have been recently detected.
    Keywords: 551 ; Long Valley Caldera ; GNSS observations ; transient signal ; nontectonic deformation
    Language: English
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  • 34
    Publication Date: 2021-10-27
    Description: On interannual timescales the growth rate of atmospheric CO2 is largely controlled by the response of the land and ocean carbon sinks to climate variability. Yet, it is unknown to what extent this variability limits the predictability of atmospheric CO2 variations. Using perfect-model Earth System Model simulations, we show that variations in atmospheric CO2 are potentially predictable for 3 years. We find a 2-year predictability horizon for global oceanic CO2 flux with longer regional predictability of up to 7 years. The 2-year predictability horizon of terrestrial CO2 flux originates in the tropics and midlatitudes. With the predictability of the isolated effects of land and ocean carbon sink on atmospheric CO2 of 5 and 12 years respectively, land dampens the overall predictability of atmospheric CO2 variations. Our research shows the potential of Earth System Model-based predictions to forecast multiyear variations in atmospheric CO2.
    Keywords: 551 ; decadal predictability ; atmospheric CO2 ; carbon fluxes ; internal variability ; Earth System Model
    Language: English
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  • 35
    Publication Date: 2021-10-27
    Description: Understanding hemisphere-wide millennial-scale temperature variability during past glacials in response to ice sheet dynamics and orbital forcing is one of the key targets for Quaternary climate research. While an inland propagation of abrupt temperature changes into Eurasia from the North Atlantic realm during the last glacial (Weichselian) receives increasingly broad support, much less is known regarding the penultimate glacial (Saalian) temperature variability, especially from a continental interior perspective. Here, we present a TEX86-derived lake surface temperature (LST) record from the former Black Sea “Lake” covering nearly the entire Marine Isotope Stage (MIS) 6. While orbital-scale LST cooling likely relates to meltwater discharge from the retreating Eurasian Ice Sheet during insolation maxima, millennial-scale LST variability suggests interstadial warming in phase with Greenland and northern Mediterranean Sea temperature records during the first half of MIS 6. Although summer insolation reached an interglacial-like level during this period, we propose that the reduced extent of the Eurasian Ice Sheet associated with northward shifted atmospheric fronts was ultimately responsible for the inland propagation of Dansgaard-Oeschger-like temperature variability. During the second half of MIS 6, temperature patterns across the North Atlantic-Eurasian corridor were more variable and less comparable with each other, likely because of the larger continental ice sheet weakening northern hemisphere atmospheric teleconnections. Temperature records across the North Atlantic-Eurasian realm suggest a weaker atmospheric teleconnection during MIS 6 compared to MIS 3, likely related to a stronger imprint of the Eurasian Ice Sheet on the continental and regional climate.
    Keywords: 551 ; lake surface temperature ; Black Sea ; MIS 6 ; Eurasia
    Language: English
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  • 36
    Publication Date: 2021-10-11
    Description: We present a local earthquake tomography to illuminate the crustal and uppermost mantle structure beneath the southern Puna plateau and to test the delamination hypothesis. Vp and Vp/Vs ratios were obtained using travel time variations recorded by 75 temporary seismic stations between 2007 and 2009. In the upper crust, prominent low Vp anomalies are found beneath the main volcanic centers, indicating the presence of magma and melt beneath the southern Puna plateau. Beneath the Moho at around 90-km depth, a strong high Vp anomaly is detected just west of the giant backarc Cerro Galan ignimbrite caldera. This high Vp anomaly is only resolved if earthquakes with an azimuthal gap up to 300° are included in the inversion. However, we show through data subset and synthetic tests that the anomaly is robust due to our specific station-event geometry and interpret it as a delaminated block of lower crust and uppermost mantle lithosphere under the southern Puna plateau. The low velocities in the crust are interpreted as a product of the delamination event that triggered the rise of fluids and melts into the crust and induced the high topography in this part of the plateau. The tomography also reveals the existence of low-velocity anomalies that link arc magmatism at the Ojos del Salado volcanic center with slab seismicity clusters at depths of about 100 and 150 km and support fluid transport in the mantle wedge due to dehydration reaction within the subducted slab.
    Keywords: 551 ; southern Puna plateau ; local earthquake tomography ; lithospheric delamination ; slab dehydration ; crustal melt accumulation
    Language: English
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  • 37
    Publication Date: 2021-10-11
    Description: Geophysical and geochemical data indicate there is abundant fluid expulsion in the Nootka fault zone (NFZ) between the Juan de Fuca and Explorer plates and the Nootka continental slope. Here we combine observations from 〉20 years of investigations to demonstrate the nature of fluid-flow along the NFZ, which is the seismically most active region off Vancouver Island. Seismicity reaching down to the upper mantle is linked to near-seafloor manifestation of fluid flow through a network of faults. Along the two main fault traces, seismic reflection data imaged bright spots 100–300 m below seafloor that lie above changes in basement topography. The bright spots are conformable to sediment layering, show opposite-to-seafloor reflection polarity, and are associated with frequency reduction and velocity push-down indicating the presence of gas in the sediments. Two seafloor mounds ~15 km seaward of the Nootka slope are underlain by deep, nonconformable high-amplitude reflective zones. Measurements in the water column above one mound revealed a plume of warm water, and bottom-video observations imaged hydrothermal vent system biota. Pore fluids from a core at this mound contain predominately microbial methane (C1) with a high proportion of ethane (C2) yielding C1/C2 ratios 〈500 indicating a possible slight contribution from a deep source. We infer the reflective zones beneath the two mounds are basaltic intrusions that create hydrothermal circulation within the overlying sediments. Across the Nootka continental slope, gas hydrate-related bottom-simulating reflectors are widespread and occur at depths indicating heat flow values of 80–90 mW/m2.
    Keywords: 551 ; fluid flow ; Nootka transform fault ; gas hydrate ; intrusion ; heat flow
    Language: English
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  • 38
    Publication Date: 2021-10-14
    Description: Estuarine CO2 emissions are important components of regional and global carbon budgets, but assessments of this flux are plagued by uncertainties associated with gas transfer velocity (k) parameterization. We combined direct eddy covariance measurements of CO2 flux with waterside pCO2 determinations to generate more reliable k parameterizations for use in small estuaries. When all data were aggregated, k was described well by a linear relationship with wind speed (U10), in a manner consistent with prior open ocean and estuarine k parameterizations. However, k was significantly greater at night and under low wind speed, and nighttime k was best predicted by a parabolic, rather than linear, relationship with U10. We explored the effect of waterside thermal convection but found only a weak correlation between convective scale and k. Hence, while convective forcing may be important at times, it appears that factors besides waterside thermal convection were likely responsible for the bulk of the observed nighttime enhancement in k. Regardless of source, we show that these day-night differences in k should be accounted for when CO2 emissions are assessed over short time scales or when pCO2 is constant and U10 varies. On the other hand, when temporal variability in pCO2 is large, it exerts greater control over CO2 fluxes than does k parameterization. In these cases, the use of a single k value or a simple linear relationship with U10 is often sufficient. This study provides important guidance for k parameterization in shallow or microtidal estuaries, especially when diel processes are considered.
    Keywords: 551 ; air-water CO2 exchange ; gas transfer velocity ; convective ; eddy covariance ; estuary ; gas exchange
    Language: English
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  • 39
    Publication Date: 2021-09-13
    Description: The Tajik basin archives the orogenic evolution of the Pamir hinterland. Stratigraphic-sedimentologic observations from Cretaceous-Pliocene strata along its eastern margin describe the depositional environment and basin-formation stages in reaction to hinterland exhumation and basin inversion. During the Late Cretaceous-Eocene (preorogenic stage: ~100–34 Ma), a shallow-marine to terrestrial basin extended throughout Central Asia. An alluvial plain with influx of conglomerate bodies (Baljuvon Formation) indicates a first pulse of hinterland erosion and foreland-basin formation in the late Oligocene-early Miocene (synorogenic stage Ia: ~34–23 Ma). Further hinterland exhumation deposited massive alluvial conglomerates (Khingou Formation) in the early-middle Miocene (synorogenic stage Ib: ~23–15 Ma). Westward thickening growth strata suggest transformation of the Tajik basin into the Tajik fold-thrust belt in the middle-late Miocene (synorogenic stage IIa: ~15–5 Ma). Increased water supply led to the formation of fluvial mega-fans (Tavildara Formation). Latest Miocene-Pliocene shortening constructed basin morphology that blocked sediment bypass into the central basin from the east (Karanak Formation), triggering drainage-system reorganization from transverse to longitudinal sediment transport (synorogenic stage IIb: 〈 ~5 Ma). Accelerated shortening (~27–20 Ma) and foreland-directed collapse (~23–12 Ma) of Pamir-plateau crust loaded the foreland and induced synorogenic stages Ia and Ib. Coupling of Indian and Asian cratonic lithospheres and onset of northward and westward delamination/rollback of Asian lithosphere (i.e., lithosphere of the Tajik basin) beneath the Pamir at ~12–11 Ma transformed the Tajik basin into the Tajik fold-thrust belt (synorogenic stage IIa). The timing of the sedimentologically derived basin reconfiguration matches the thermochronologically derived onset of Tajik-basin inversion at ~12 Ma.
    Keywords: 551 ; 555 ; Pamir-Tibet formation ; Tajik retro-foreland basin ; growth strata ; provenance ; deep-lithosphere trigger
    Language: English
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  • 40
    Publication Date: 2021-09-15
    Description: Geophysical length scales defined from induced-polarization measurements can be used in models of permeability (k) prediction. We explore the relative merit of different induced-polarization parameters as proxies of an effective hydraulic radius (reff) that can be used to predict permeability from a modified Hagen–Poiseuille equation. Whereas geometrical measures of the hydraulic radius are good proxies of reff, the induced-polarization measures are not well correlated with reff. However, a new proxy of reff that considers both imaginary conductivity and formation factor shows an improved correlation with reff. The resulting model enables a better quality of permeability prediction compared with the other geophysical length scales, but does not reach the predictive quality of the models based on geometrical length scales. The specific polarizability defined when incorporating the effect of the formation factor on imaginary conductivity appears to be independent of pore geometry, indicating that it is the correct parameter representing the role of the surface electrochemistry on the induced-polarization effect. However, the joint dependence of induced-polarization measurements on both the pore radius and the tortuosity and porosity of the interconnected pore network is a limitation to the widely explored use of induced-polarization measurements to isolate surface properties from volumetric properties of the interconnected pore network.
    Keywords: 551 ; 622.15 ; Complex conductivity ; Hydrogeophysics ; Induced polarization ; Permeability ; Porosity
    Language: English
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  • 41
    Publication Date: 2021-09-15
    Description: New marine geophysical data acquired across the partly ice-covered northern East Greenland continental margin highlight a complex interaction between tectonic and magmatic events. Breakup-related lava flows are imaged in reflection seismic data as seaward dipping reflectors, which are found to decrease in size both northward and southward from a central point at 75°N. We provide evidence that the magnetic anomaly pattern in the shelf area is related to volcanic phases and not to the presence of oceanic crust. The remnant magnetization of the individual lava flows is used to deduce a relative timing of the emplacement of the volcanic wedges. We find that the seaward dipping reflectors have been emplaced over a period of 2–4 Ma progressively from north to south and from landward to seaward. The new data indicate a major post-middle Eocene magmatic phase around the landward termination of the West Jan Mayen Fracture Zone. This post-40-Ma volcanism likely was associated with the progressive separation of the Jan Mayen microcontinent from East Greenland. The breakup of the Greenland Sea started at several isolated seafloor spreading cells whose location was controlled by rift structures and led to the present-day segmentation of the margin. The original rift basins were subsequently connected by steady-state seafloor spreading that propagated southward, from the Greenland Fracture Zone to the Jan Mayen Fracture Zone.
    Keywords: 551 ; 559 ; NE Greenland ; seismic reflection ; seaward dipping reflectors ; continent-ocean transition ; rifting ; Greenland Sea
    Language: English
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  • 42
    Publication Date: 2021-09-15
    Description: We combine numerical modeling of lithospheric extension with analysis of seismic moment release and earthquake b-value in order to elucidate the mechanism for deep crustal seismicity and seismic swarms in the Main Ethiopian Rift (MER). We run 2-D numerical simulations of lithospheric deformation calibrated by appropriate rheology and extensional history of the MER to simulate migration of deformation from mid-Miocene border faults to ∼30 km wide zone of Pliocene to recent rift floor faults. While currently the highest strain rate is localized in a narrow zone within the rift axis, brittle strain has been accumulated in a wide region of the rift. The magnitude of deviatoric stress shows strong variation with depth. The uppermost crust deforms with maximum stress of 80 MPa, at 8–14 km depth stress sharply decreases to 10 MPa and then increases to a maximum of 160 MPa at ∼18 km depth. These two peaks at which the crust deforms with maximum stress of 80 MPa or above correspond to peaks in the seismic moment release. Correspondingly, the drop in stress at 8–14 km correlates to a low in seismic moment release. At this depth range, the crust is weaker and deformation is mainly accommodated in a ductile manner. We therefore see a good correlation between depths at which the crust is strong and elevated seismic deformation, while regions where the crust is weaker deform more aseismically. Overall, the bimodal depth distribution of seismic moment release is best explained by the rheology of the deforming crust.
    Keywords: 551 ; 556 ; numerical modeling ; earthquakes ; Main Ethiopian Rift ; strain rate
    Language: English
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  • 43
    Publication Date: 2021-10-06
    Description: Loess sediments are windblown silt deposits with, in general, a carbonate grain content of up to 30%. While regionally, loess was reported to increase weathering fluxes substantially, the influence on global weathering fluxes remains unknown. Especially on glacial-interglacial time scales, loess weathering fluxes might have contributed to land-ocean alkalinity flux variability since the loess areal extent during glacial epochs was larger. To quantify loess weathering fluxes, global maps representing the loess distribution were compiled. Water chemistry of rivers draining recent loess deposits suggests that loess contributes over-proportionally to alkalinity concentrations if compared to the mean of alkalinity concentrations of global rivers (~4,110 µeq L−1 for rivers draining loess deposits and ~1,850 µeq L−1 for the total of global rivers), showing comparable alkalinity concentration patterns in rivers as found for carbonate sedimentary rocks. Loess deposits, covering ~4% of the ice- and water-free land area, increase calculated global alkalinity fluxes to the coastal zone by 16%. The new calculations lead to estimating a 4% higher global alkalinity flux during the Last Glacial Maximum (LGM) compared to present fluxes. The effect of loess on that comparison is high. Alkalinity fluxes from silicate-dominated lithological classes were ~28% and ~30% lower during the LGM than recent (with loess and without loess, respectively), and elevated alkalinity fluxes from loess deposits compensated for this. Enhanced loess weathering dampens due to a legacy effect changes in silicate-dominated lithologies over the glacial-interglacial time scale.
    Keywords: 551 ; chemical weathering ; loess deposits
    Language: English
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  • 44
    Publication Date: 2021-12-03
    Description: In contrast to seamount chains, small solitary seamounts/seamount groups have rarely been sampled despite their large number and therefore their origins remain enigmatic. Here we present new 40Ar/39Ar, trace element and Nd-Hf-Pb isotope data from the solitary Demenitskoy Seamount, the isolated Tolkien seamount group and the Krylov Seamount and Ridge in the Canary Basin, Central Atlantic Ocean. Their chemical compositions range from intraplate ocean-island-basalt (Demenitskoy) to mid-ocean-ridge-basalt (Tolkien and Krylov) types. Lavas from all three seamount groups, however, show geochemical evidence for involvement of enriched Canary/Cape Verde plume material. Seismic tomography shows that large areas around these mantle plumes consist of dispersed low-velocity material, which could represent diffusely-upwelling plume mantle. Melts from such upwelling mantle could form isolated seamounts. Diffuse upwelling of plume material is likely to be extremely widespread but has been poorly studied to date. Significance Statement A fundamental question concerns the origin of the hundreds of thousands of solitary seamounts and small isolated clusters of such seamounts on the seafloor of the world's ocean basins. Most of them do not fit into any currently accepted models (e.g. they are not associated with a linear hotspot track or plate boundary processes). Their formation could therefore represent a new kind of intraplate volcanism that in fact could be extremely widespread but has been thus far largely neglected. In this manuscript, we report geochemical data from three isolated seamount sites in the Canary Basin and propose a provocative model for their formation that can also be applied to isolated seamounts elsewhere. Our study is therefore also a plea for the long overdue systematic investigation of small seamount volcanism in the world's ocean basins. I hereby confirm that all the data and interpretations are new and have not been published elsewhere. All co-authors have been actively involved in this work, have approved the manuscript and agreed to this submission.
    Keywords: 551 ; Canary Basin ; seamounts ; isotopic compositions
    Language: English
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  • 45
    Publication Date: 2021-11-30
    Description: The Indonesian Throughflow (ITF) operates as an important link in global thermohaline circulation, and ITF variability probably modulated Pliocene climate change. Yet, whether ITF variability accounted for oceanographic change south of Northwest Cape remains controversial. Here, we present a multiproxy oceanographic reconstruction from the Perth Basin and reconstruct the Pliocene history of the Leeuwin Current (LC). We show that the LC was active throughout the Pliocene, albeit with fluctuations in intensity and scope. Three main factors controlled LC strength. First, a tectonic ITF reorganization caused an abrupt and permanent LC reduction at 3.7 Ma. On shorter timescales, eustatic sea level and direct orbital forcing of wind patterns hampered or promoted the LC. At 3.3 Ma, for instance, LC intensity plunged in response to a eustatic ITF restriction. Site U1459 then fell outside the extent of a weakened LC, and the latitudinal sea surface temperature gradient along West Australia doubled its steepness.
    Keywords: 551 ; Perth Basin ; sediment core ; multiproxy geochemical records ; Pliocene ; Leeuwin Current (LC)
    Language: English
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  • 46
    Publication Date: 2021-10-25
    Description: Estimates of flood susceptibility and land loss in the world's coastal regions depend on our knowledge of sea level rise (SLR) from increases in ocean mass and volume, as well as knowledge of vertical land motion. Conventional approaches to the latter include tide-gauge and Global Positioning System (GPS) measurements relative to well-anchored monuments few meters below the surface. However, in regions of rapid Holocene sedimentation, compaction of this material can add a significant component to the surface lowering. Unfortunately, this process has been difficult to quantify, especially for the shallowest material above the monument. Here we use a new technique, GPS interferometric reflectometry, to estimate the rate of this process in the Mississippi Delta and the eastern margin of the North Sea. We show that the rate of shallow compaction is comparable to or larger than the rate of global SLR, adding 35% and 65%, respectively, to the rate of relative SLR by 2100.
    Keywords: 526.3 ; 551 ; GPS ; interferometric reflectometry ; tide gauge ; coastal subsidence ; shallow subsidence ; Holocene sediment compaction
    Language: English
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