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  • 1
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    Cratonic Basin Formation : A Case Study of the Parnaíba Basin of Brazil (2018)
    London : The Geological Society
    Details
    Schlagwort(e): basin research ; cratonic basin ; Parnaíba Basin ; Brazil
    Beschreibung / Inhaltsverzeichnis: Cratonic basin formation: a case study of the Parnaíba Basin of Brazil / M. C. Daly, R. A. Fuck, J. Julià, D. I. M. Macdonald and A. B. Watts / Geological Society, London, Special Publications, 472, 1-15, 14 September 2018, https://doi.org/10.1144/SP472.20 --- Cratonic basins --- Cratonic basins with reference to the Michigan basin / Norman H. Sleep / Geological Society, London, Special Publications, 472, 17-35, 6 February 2018, https://doi.org/10.1144/SP472.1 --- Lithospheric heating by crustal thickening: a possible origin of the Parnaíba Basin / D. McKenzie and V. Rodríguez Tribaldos / Geological Society, London, Special Publications, 472, 37-44, 19 February 2018, https://doi.org/10.1144/SP472.5 --- A comparative study of the Parnaíba, Michigan and Congo cratonic basins / A. B. Watts, B. Tozer, M. C. Daly and J. Smith / Geological Society, London, Special Publications, 472, 45-66, 22 February 2018, https://doi.org/10.1144/SP472.6 --- The Parnaíba cratonic basin: lithospheric and crustal structure --- Structure of the crust and upper mantle beneath the Parnaíba Basin, Brazil, from wide-angle reflection–refraction data / José E. P. Soares, Randell Stephenson, Reinhardt A. Fuck, Marcus V. A. G. de Lima, Vitto C. M. de Araújo, Flávio T. Lima, Fábio A. S. Rocha and Cíntia R. da Trindade / Geological Society, London, Special Publications, 472, 67-82, 13 April 2018, https://doi.org/10.1144/SP472.9 --- Deep crustal architecture of the Parnaíba basin of NE Brazil from receiver function analysis: implications for basin subsidence / Diogo L. O. Coelho, Jordi Julià, Verónica Rodríguez-Tribaldos and Nicholas White / Geological Society, London, Special Publications, 472, 83-100, 16 May 2018, https://doi.org/10.1144/SP472.8 --- Reprocessing and interpretation of deep structures in a regional transect of the Parnaíba Basin, Brazil / Rafael R. Manenti, Wilker E. Souza and Milton J. Porsani / Geological Society, London, Special Publications, 472, 101-107, 12 June 2018, https://doi.org/10.1144/SP472.17 --- Electrical conductivity structure across the Parnaíba Basin, NE Brazil / F. F. Solon, S. L. Fontes and E. F. La Terra / Geological Society, London, Special Publications, 472, 109-126, 13 July 2018, https://doi.org/10.1144/SP472.19 --- The pre-Silurian Riachão basin: a new perspective on the basement of the Parnaíba basin, NE Brazil / Amanda Porto, Michael C. Daly, Emanuele La Terra and Sergio Fontes / Geological Society, London, Special Publications, 472, 127-145, 19 February 2018, https://doi.org/10.1144/SP472.2 --- Implications of preliminary subsidence analyses for the Parnaíba cratonic basin / Verónica Rodríguez Tribaldos and Nicky White / Geological Society, London, Special Publications, 472, 147-156, 6 February 2018, https://doi.org/10.1144/SP472.3 --- The Parnaíba cratonic basin: stratigraphic and sedimentological evolution --- Evolution of a cratonic basin: insights from the stratal architecture and provenance history of the Parnaíba Basin / L. A. Menzies, A. Carter and David I. M. MacDonald / Geological Society, London, Special Publications, 472, 157-179, 6 August 2018, https://doi.org/10.1144/SP472.18 --- Provenance of sandstones in the Parnaíba Basin through detrital zircon geochronology / M. H. B. M. Hollanda, A. M. Góes and F. A. Negri / Geological Society, London, Special Publications, 472, 181-197, 12 July 2018, https://doi.org/10.1144/SP472.16 --- Palaeogeographical and palaeoclimatic evolution of the intracratonic Parnaíba Basin, NE Brazil using GPlates plate tectonic reconstructions and chemostratigraphic tools / Marwan M. Jaju, Haydon P. Mort, Fadi H. Nader, Mário L. Filho and David I. M. Macdonald / Geological Society, London, Special Publications, 472, 199-222, 6 June 2018, https://doi.org/10.1144/SP472.12 --- Re-evaluation of the Permian macrofossils from the Parnaíba Basin: biostratigraphic, palaeoenvironmental and palaeogeographical implications / Roberto Iannuzzi, Rodrigo Neregato, Juan C. Cisneros, Kenneth D. Angielczyk, Ronny Rößler, Rosemarie Rohn, Claudia Marsicano, Jörg Fröbisch, Thomas Fairchild, Roger M. H. Smith, Francine Kurzawe, Martha Richter, Max C. Langer, Tatiane M. V. Tavares, Christian F. Kammerer, Domingas M. Conceição, Jason D. Pardo and Guilherme A. Roesler / Geological Society, London, Special Publications, 472, 223-249, 2 July 2018, https://doi.org/10.1144/SP472.14 --- The Parnaíba cratonic basin: magmatic history --- Geochemical and temporal provinciality of the magmatism of the eastern Parnaíba Basin, NE Brazil / Monica Heilbron, Eliane Guedes, Miguel Mane, Claudio de Morisson Valeriano, Miguel Tupinambá, Júlio Almeida, Luiz Guilherme do Eirado Silva, Beatriz Paschoal Duarte, Jorge Carlos Dela Favera and Adriano Viana / Geological Society, London, Special Publications, 472, 251-278, 5 June 2018, https://doi.org/10.1144/SP472.11 --- Petrology of Jurassic and Cretaceous basaltic formations from the Parnaíba Basin, NE Brazil: correlations and associations with large igneous provinces / Alisson L. Oliveira, Márcio M. Pimentel, Reinhardt A. Fuck and Diógenes C. Oliveira / Geological Society, London, Special Publications, 472, 279-308, 6 August 2018, https://doi.org/10.1144/SP472.21 --- Role of basaltic magmatism within the Parnaíba cratonic basin, NE Brazil / Marthe Klöcking, Nicky White and John MacLennan / Geological Society, London, Special Publications, 472, 309-319, 23 March 2018, https://doi.org/10.1144/SP472.4 --- Phanerozoic magmatism in the Parnaíba Basin: characterization of igneous bodies (well logs and 2D seismic sections), geometry, distribution and sill emplacement patterns / I. Trosdtorf, J. M. Morais Neto, S. F. Santos, C. V. Portela Filho, T. A. Dall Oglio, A. C. M. Galves and A. M. Silva / Geological Society, London, Special Publications, 472, 321-340, 16 May 2018, https://doi.org/10.1144/SP472.10 --- The Parnaíba cratonic basin: resource system --- Atypical igneous-sedimentary petroleum systems of the Parnaíba Basin, Brazil: seismic, well logs and cores / Frederico S. de Miranda, Ana Luiza Vettorazzi, Paulo R. da Cruz Cunha, Fernando B. Aragão, Diogo Michelon, João Luiz Caldeira, Ernani Porsche, Celso Martins, Roberto B. Ribeiro, Alexandre F. Vilela, José R. Corrêa, Lilian S. Silveira and Kátia Andreola / Geological Society, London, Special Publications, 472, 341-360, 12 July 2018, https://doi.org/10.1144/SP472.15 --- New insights into the Parnaíba Basin: results of investments by the Brazilian National Petroleum Agency / Marina Abelha, Eliane Petersohn, Gabriel Bastos and Daniel Araújo / Geological Society, London, Special Publications, 472, 361-366, 5 July 2018, https://doi.org/10.1144/SP472.13
    Seiten: Online-Ressource (VIII, 372 Seiten) , Illustrationen, Diagramme
    ISBN: 9781786203960
    URL: https://sp.lyellcollection.org/content/472/1
    Sprache: Englisch
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  • 2
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    Crustal thickness variations in northern Morocco (2012)
    Wiley
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    Publikationsdatum: 2012-02-23
    Beschreibung: During the TopoIberia experiment, a total of 26 seismic broadband stations were recording in northern Morocco, providing for the first time extended regional coverage for investigating structure and seismotectonics of the southern branch of the Betic-Rif arc, its foreland, and the Atlas domain. Here, we analyze P-to-S converted waves in teleseismic receiver functions to infer gross crustal properties as thickness and Vp/Vs ratio. Strong lateral variations of the crustal thickness are observed throughout the region. Crustal thicknesses vary between 22 and 44 km and display a simple geographic pattern that divides the study area into three domains: entire northwestern Morocco underlain by a thickened crust with crustal thicknesses between 35 and 44 km; northeastern Morocco affected by significant crustal thinning, with crustal thicknesses ranging from 22 to 30 km, with the shallowest Moho along the Mediterranean coast; and an extended domain of 27–34 km thick crust, farther south which includes the Atlas domain and its foreland regions. Vp/Vs ratios show normal values of ∼1.75 for most stations except for the Atlas domain, where several stations give low Vp/Vs ratios of around 1.71. The very sharp transition from thick crust in northwestern Morocco to thin crust in northeastern Morocco is attributed to regional geodynamics, possibly the realm of present-day subcrustal dynamics in the final stage of western Mediterranean subduction. Crustal thicknesses just slightly above 30 km in the southern domain are intriguing, showing that high topography in this region is not isostatically compensated at crustal level.
    Print ISSN: 0148-0227
    Thema: Geologie und Paläontologie , Physik
    Publiziert von Wiley im Namen von American Geophysical Union (AGU).
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  • 3
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    Upper and Middle Crustal Velocity Structure of the Colombian Andes From Ambient Noise Tomography: Investigating Subduction-Related Magmatism in the Overriding Plate (2018)
    American Geophysical Union
    Details
    Publikationsdatum: 2018-02-01
    Beschreibung: New maps of S velocity variation for the upper and middle crust making up the northwestern most corner of South America have been developed from cross correlation of ambient seismic noise at 52 broadband stations in the region. Over 1,300 empirical Green's functions, reconstructing the Rayleigh wave portion of the seismic wavefield, were obtained after time and frequency-domain normalization of the ambient noise recordings and stacking of 48 months of normalized data. Interstation phase and group velocity curves were then measured in the 6–38 s period range and tomographically inverted to produce maps of phase and group velocity variation in a 0.5° × 0.5° grid. Velocity-depth profiles were developed for each node after simultaneously inverting phase and group velocity curves and combined to produce 3-D maps of S velocity variation for the region. The S velocity models reveal a ~7 km thick sedimentary cover in the Caribbean region, the Magdalena Valley, and the Cordillera Oriental, as well as crustal thicknesses in the Pacific and Caribbean region under ~35 km, consistent with previous studies. They also display zones of slow velocity at 25–35 km depth under regions of both active and inactive volcanism, suggesting the presence of melts that carry the signature of segmented subduction into the overriding plate. A low-velocity zone in the same depth range is imaged under the Lower Magdalena Basin in the Caribbean region, which may represent either sublithospheric melts ponding at midcrustal levels after breaching through a fractured Caribbean flat slab or fluid migration through major faults within the Caribbean crust. ©2018. American Geophysical Union. All Rights Reserved.
    Print ISSN: 2169-9313
    Digitale ISSN: 2169-9356
    Thema: Geologie und Paläontologie , Physik
    Publiziert von American Geophysical Union
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  • 4
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    Deviatoric Moment Tensor Solutions from Spectral Amplitudes in Surface Network Recordings: Case Study in São Caetano, Pernambuco, Brazil (2017)
    Seismological Society of America
    Details
    Publikationsdatum: 2017-03-14
    Print ISSN: 0037-1106
    Digitale ISSN: 1943-3573
    Thema: Geologie und Paläontologie , Physik
    Publiziert von Seismological Society of America
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  • 5
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    The structure of the crust and uppermost mantle beneath Madagascar (2017)
    Oxford University Press
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    Publikationsdatum: 2017-01-01
    Print ISSN: 0956-540X
    Digitale ISSN: 1365-246X
    Thema: Geologie und Paläontologie
    Publiziert von Oxford University Press im Namen von The Royal Astronomical Society.
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  • 6
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    Prominent thermal anomalies in the mantle transition zone beneath the Transantarctic Mountains (2020)
    Geological Society of America
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    Publikationsdatum: 2020-05-18
    Beschreibung: The Transantarctic Mountains (TAMs), Antarctica, exhibit anomalous uplift and volcanism and have been associated with regions of thermally perturbed upper mantle that may or may not be connected to lower mantle processes. To determine if the anomalous upper mantle beneath the TAMs connects to the lower mantle, we interrogate the mantle transition zone (MTZ) structure under the TAMs and adjacent parts of East Antarctica using 12,500+ detections of P-to-S conversions from the 410 and 660 km discontinuities. Our results show distinct zones of thinner-than-global-average MTZ (∼205–225 km, ∼10%–18% thinner) beneath the central TAMs and southern Victoria Land, revealing throughgoing convective thermal anomalies (i.e., mantle plumes) that connect prominent upper and lower mantle low-velocity regions. This suggests that the thermally perturbed upper mantle beneath the TAMs and Ross Island may have a lower mantle origin, which could influence patterns of volcanism and TAMs uplift.
    Print ISSN: 0091-7613
    Digitale ISSN: 1943-2682
    Thema: Geologie und Paläontologie
    Publiziert von Geological Society of America
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  • 7
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    Joint Inversion of High-Frequency Receiver Functions and Surface-Wave Dispersion: Case Study in the Parnaíba Basin of Northeast Brazil (2020)
    Seismological Society of America
    Details
    Publikationsdatum: 2020-05-05
    Beschreibung: We assess the performance of the joint inversion of receiver functions (RF) and surface-wave dispersion in the characterization of the sedimentary package comprising the Parnaíba basin. This procedure is routinely utilized in passive-source crustal studies to retrieve S-wave velocity variations with depth, and has seldom been used with higher-frequency datasets to investigate fine sedimentary structure. The Parnaíba basin is a Paleozoic cratonic basin composed of five supersequences, accumulating ∼3.5  km of sedimentary rocks interbedded by Late Cretaceous diabase sills. The dataset used for this research was acquired between 2015 and 2017 through deployment of 10 short-period and one broadband seismic stations distributed along an approximately 100-kilometer-long linear array in the center of the basin. The deployment was carried out under the Parnaíba Basin Analysis Project, a multi-institutional and multidisciplinary effort funded by BP Energy do Brasil. High-frequency RFs (f
    Print ISSN: 0037-1106
    Digitale ISSN: 1943-3573
    Thema: Geologie und Paläontologie , Physik
    Publiziert von Seismological Society of America
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  • 8
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    Lithospheric thinning under the Araripe Basin (NE Brazil) from a long-period magnetotelluric survey: Constraints for tectonic inversion (2019)
    Elsevier
    Details
    Publikationsdatum: 2019-04-01
    Print ISSN: 1342-937X
    Digitale ISSN: 1878-0571
    Thema: Geologie und Paläontologie
    Publiziert von Elsevier
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  • 9
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    Shear Velocity Structure Beneath Saudi Arabia From the Joint Inversion of P and S Wave Receiver Functions, and Rayleigh Wave Group Velocity Dispersion Data (2019)
    American Geophysical Union
    Details
    Publikationsdatum: 2019-05-01
    Beschreibung: We develop a new 3-D shear velocity model for the lithosphere and sublithospheric mantle under Saudi Arabia by jointly inverting P wave receiver functions, S wave receiver functions, and fundamental-mode Rayleigh wave group velocities. P and S receiver functions are calculated from earthquakes recorded between 2012 and 2015 at 156 Saudi National Seismic Network stations operated by the Saudi Geological Survey. Rayleigh wave dispersion data are extracted from independent tomographic studies. Our model reveals significant lateral variations in crustal and upper-mantle S velocity below Saudi Arabia. Particularly, a low-velocity zone, with minimum S velocity of ~4.0 km/s in the depth range of 70-190 km, is observed under the Arabian Shield coinciding with Cenozoic surface volcanism. The low-velocity zone is found consistent with the presence of partial melts in the mantle and interpreted as a potential deep magma source for the volcanism in western Arabia. We propose that magmas responsible for the Arabian volcanism may be derived from multiple sources. Both lithospheric thinning and the Afar plume trigger magma production beneath southwestern Arabia, while decompression melting caused by the lithospheric thinning may be the main factor in the central and northern portions. Furthermore, we find evidence for localized crustal low shear velocity anomalies (2–4% reductions) that appear spatially correlated to the volcanism; these may be due to fractures caused by magma ascent and small amounts of partial melt in the crust. This spatial distribution of S velocity reductions may indicate the plumbing system for magma ascent underneath western Arabia.
    Print ISSN: 2169-9313
    Digitale ISSN: 2169-9356
    Thema: Geologie und Paläontologie , Physik
    Publiziert von American Geophysical Union
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  • 10
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    Thin Lithosphere Beneath the Ethiopian Plateau Revealed by a Joint Inversion of Rayleigh Wave Group Velocities and Receiver Functions (2007)
    American Geophysical Union
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    Publikationsdatum: 2007-08-11
    Print ISSN: 0148-0227
    Digitale ISSN: 2156-2202
    Thema: Geologie und Paläontologie
    Publiziert von American Geophysical Union
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