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  • 1
    Call number: K 95.0020 / R6
    In: Geologische Karte der Republik Österreich
    Type of Medium: Map available for loan
    Pages: 1 Kt. : mehrfarb. ; 54 x 82 cm, gefaltet 12 x 21 cm + Erl.-H. (192 S., 2010) im Umschlag
    ISBN: 9783853160558
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Publication Date: 2022-09-01
    Description: In der Baugrube „Neubau Geologisches Landesamt Rheinland-Pfalz“ in Mainz-Hechtsheim waren tertiäre und quartäre Sedimente in gut zugänglichen Profilen aufgeschlossen. Über Kalksteinen und Mergel der Oberen Hydrobienschichten (Miozän) folgen arvernensis-Schotter und „Ältere Weisenauer Sande” (Pliozän). „Jüngere Weisenauer Sande“ (Altestpleistozän) sind schwermineralogisch in situ und in Umlagerungssedimenten nachweisbar. Zur Hauptterrassenzeit (Altpleistozän) hat sich der Rhein in die Weisenauer Sande eingeschnitten und die dabei entstandenen Rinnen mit Kies und Sand verfüllt. Periglaziale Schuttdecken und Jungwürm-Löß bilden den Abschluß der känozoischen Schichtenfolge.
    Description: Abstract: Tertiary and quaternary sediments were visible in the excavation for the new office building of the Geological Survey of Rheinland-Pfalz in Mainz-Hechtsheim. Arvernensis- gravel and Early Weisenau sands (pliocene) follow limestones and marls of the Upper Hydrobien beds (miocene). With the help of heavy mineral analysis late Weisenau sands (oldest pleistocene) were detected in situ and in moved sediments. The river Rhine accumulated the main terrasse in the old pleistocene, forming channels which later filled with sand and gravel. Periglacial detritus and loess of the younger würm-glacial complete the cenozoic sequence.
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
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  • 3
    Publication Date: 2022-10-21
    Description: Anwachslinien von 20 Bivalvenschalen unterschiedlicher Oligozän- Fundstellen im Mainzer Becken und von 14 rezenten Bivalvenschalen wurden untersucht. Die rupelischen Formen dokumentieren 14tägige Anwachslinienrhythmen, die chattischen Mollusken zeigen eher jahreszeitlich bedingte Zyklen.
    Description: Abstract: Valves of 20 Oligocene pelecypods from the Mainz Basin and 14 recent valves were examined for growth patterns. Whereas the microgrowth increments of the Rupelian samples indicate fortnightly tidal intervals, the Chattian specimens show annual (seasonal) variations in growth.
    Description: research
    Keywords: ddc:562
    Language: German
    Type: doc-type:article , publishedVersion
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  • 4
    Publication Date: 2022-09-05
    Description: Aus den Jeckenbach-Schichten von Niedermoschel/Pfalz wird der seltene Fund einer Hai-Eikapsel beschrieben. Er wird der Gattung Fayolia RENAULT & ZEILLER zugeordnet und mit allen bisherigen Fayolia-Arten verglichen. Paläoökologische Anmerkungen zum Fundhorizont und zum möglichen Erzeuger der Hai-Eikapsel werden gemacht.
    Description: Abstract: Egg capsules from sharks are very seldomly found in the permocarboniferous Saar-Nahe basin. Three finds have been done up to now, but only one find comes from the lower Rotliegend. A second one comes now from the black shale called Niedermoschel bed (Jeckenbach formation, northern Palatinate). It belongs to the genus Fayolia RENAULT & ZEILLER. It will be described and compared with all other species of Fayolia. In addition flora and fauna of the Niedermoschel bed are listed, and their paleoecological relationships are discussed. The origination of the egg capsule is interpreted.
    Description: research
    Keywords: ddc:567.3
    Language: German
    Type: doc-type:article , publishedVersion
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  • 5
    Publication Date: 2022-09-02
    Description: Die lithostratigraphische Einheit Lauterecken- bis Odernheim-Schichten L-O5 nach Boy & Fichter (1982) wird anhand von sechs Profilen detailliert mit allen Horizonten beschrieben. Sechs neue Leithorizonte werden aufgestellt. Auf die Fossilführung wird eingegangen. Die laterale fazielle Entwicklung wird dargestellt und ein Bild der Paläolandschaft entwickelt.
    Description: Abstract: Boy & Fichter (1982) presented a new concept concerning the subdivision of the monotonous sediment series of the former Upper Kusel to Middle Lebach Group (sensu Farke 1974) of the Rotliegend of the Saar-Nahe basin. They summarised the lithostratigraphical sections of the Lauterecken-, Jeckenbach- and Odernheim formations and sub-divided this new section by means of 10 informal units (L-O1 to L-O10). The lithostratigraphical unit L-OS5 is detailled here in six profiles with descriptions of all horizons given. Six new index horizons are erected. A guide to the fossils is introduced. The development of the lateral facies is described and a picture of the palaeolandscape is presented.
    Description: research
    Keywords: ddc:554.3
    Language: German
    Type: doc-type:article , publishedVersion
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  • 6
    Publication Date: 2023-03-10
    Description: Umfangreiches neues Material erlaubte die Untersuchung einer Brachiopodenart, die Rösler 1954 unter dem Namen Leptostrophia dahmeri veröffentlichte. Für diese Art konnte ein Lectotypus festgelegt sowie eine revidierte Diagnose erstellt werden. Die Untersuchungen zeigten, daß diese Art in keine der bisher veröffentlichten Gattungen gestellt werden kann, daher wird eine neue monotypische Gattung (Pseudoleptostrophiagen. nov.) mit der Typusart Leptostrophia dahmeri aufgestellt. Die Problematik der Zuordnung der neuen Gattung zu den Familien Leptostrophiidae und Amphistrophiidae (im Sinne von Rong & Cocks 1994) wird diskutiert.
    Description: Abstract: In 1954 RÖSLER erected the brachiopod species Leptostrophia dahmeri (Strophomenoidea, Rheinisches Schiefergebirge, Lower Devonian). New, numerous material allowed the reexamination of this species. A lectotyp is selected and a revised diagnosis is given. A new genus Pseudoleptostrophia is erected with the type species Leptostrophia dahmeri.The problems concerning the allocation of the new genus to the brachiopod families Leptostrophiidae and Amphistrophiidae as defined by RONG & COCKS (1994)are discussed.
    Description: research
    Keywords: ddc:562 ; Brachiopoden ; Unterdevon ; Rheinisches Schiefergebirge
    Language: German
    Type: doc-type:article , publishedVersion
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  • 7
    facet.materialart.
    Unknown
    Selbstverlag Fachbereich Geowissenschaften, Freie Universität Berlin
    In:  Herausgeberexemplar
    Publication Date: 2024-02-14
    Description: Die Geologie des Arbeitsgebietes Derudeb ist mit Methoden der Fernerkundung und Geo- Informationssystemen auf der Grundlage einer begrenzten Datenbasis untersucht worden. Als Ergebnis wurde ein geologisches Kartenblatt im Maßstab 1 : 250 000 erstellt. Das Gebiet der südlichen Red Sea Hills, im NE des Sudan gelegen, bildet den nubischen Teil des Arabisch-Nubischen Schildes.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:556 ; ddc:550.285 ; Sudan ; GIS ; Spektralmessungen ; spectral analysis
    Language: English
    Type: doc-type:book
    Format: 122
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  • 8
    facet.materialart.
    Unknown
    Selbstverlag Fachbereich Geowissenschaften, FU Berlin
    In:  Herausgeberexemplar
    Publication Date: 2024-04-17
    Description: Contents ; List of Contributors ; Introduction ; I. General Problems of Sponge Biology. S. M. Efremova: Once more on the position among Metazoa - Gastrulation and germinal layers of sponges ; N. N. Marfenin: Sponges viewed in the light of up-to-date conception on coloniality ; A. V. Ereskovsky & G. P. Korotkova: The reasons of sponge sexual morphogenesis peculiarities II. Developmental Biology of Sponges. O. M. Ivanova-Kazas: Analysis of the sponges ontogeny at sexual reproduction ; R. P. Anakina: The cleavage specifity in embryos of the Barents Sea sponge Leucosolenia complicata Montagu (Calcispongiae, Calcaronea) ; L. V. Ivanova: New data about morphology and metamorphosis of the spongillid larvae (Porifera, Spongillidae). 1. Morphology of the free-swimming larvae ; L. V. Ivanova: New data about morphology and metamorphosis of the spongillid larvae (Porifera, Spongillidae). 2. The metamorphosis of the spongillid larvae ; L. V. Ivanova & V. V. Semenov: Feeding habits of the larvae of sponges ; N. A. Sizova & A. V. Ereskovsky: Ultrastructural peculiarities of the early embryogenesis in a White Sea sponge Halisarca dujardini (Demospongiae, Dendroceratida) ; III. Ecology of Sponges. R. P. Anakina & E. I. Slepian: Spiculas' malformations of freshwater sponges as indicators of water environment in St. Petersburg City ; A. S. Plotkin & A. V. Ereskovsky: Ecological aspects of asexual reproduction of the White Sea sponge Polymastia mammillaris (Demospongiae, Tetractinomorpha) in Kandalaksha Bay ; I. S. Smirnov & V. M. Koltun: Symbiosis of the antarctic sponge genus lophon (Porifera) and ophiuroid genus Ophiurolepis (Ophiuroidea, Echinodermata) ; IV. Palaeontology and Systematics. L. V. Bolshakova: Stromatoporoids - the fossil sponges ; E. V. Veinberg, 0. M. Khlystov, S. S. Vorobyova, E. G. Kornakova, 0. V. Levina, S. M. Efremova, & M. A. Grachev: Distribution of sponge spicules in sediments of the underwater Akademichesky ridge of Lake Baikal ; K. R. Tabachnik & C. Levi: Amphidiscophoran Hexasterophora (Part I & II) ;
    Description: conference
    Description: DFG, SUB Göttingen
    Keywords: ddc:560 ; Porifera ; Paläobiologie
    Language: English
    Type: doc-type:book
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  • 9
    facet.materialart.
    Unknown
    Selbstverlag Fachbereich Geowissenschaften, FU Berlin
    In:  Herausgeberexemplar
    Publication Date: 2024-04-17
    Description: Von den bisher weitgehend unbearbeiteten, Oberkretazischen Gesteinsfolgen im Raum Santander (Provinz Kantabrien, Spanien) wurde der Zeitabschnitt Turon bis Unter-Coniac lithologisch, sedimentologisch sowie stratigraphisch (Bio-, Event-, Sequenzstratigraphie) detailliert bearbeitet. Die Sedimente eines gemischten, siliziklastisch/karbonatischen Systemes wurden in einem, durch starke synsedimentäre Tektonik geprägten, E-W-streichenden Meeresraum abgelagert, der nach Westen graduell in die flachmarine Asturianische Kreide überging und im Süden durch den, aus paläozoischem Basement bestehendenden Cabuemiga Rücken begrenzt war. Im Norden markierte das Liencres Hoch die Grenze. Dieser Sedimentationsraum repräsentierte einen eigenständigen Beckenbereich, für den die Bezeichnung Nordkantabrisches Becken (NKB) eingeführt wird. Das NKB entstand in der Unterkreide (Valangin/Hauterive) durch Blockrotation an E-W-streichenden Lineamenten. Strukturell trennt die N-S-streichende Rio Miera-Flexur im Osten das NKB vom Basko-Kantabrischen Becken. Proximale Sedimente sind durch das Auftreten von (glaukonitischen) Knollenkalken charakterisiert. Die eher distalen Ablagerungsräume zeichnen sich durch zyklische Kalk/Mergel-Wechselfolgen aus. Während regressiver Phasen treten Allochthonite auf (Calciturbidite). Im bearbeiteten Zeitraum Turon und Unter-Coniac führen möglicherweise fünf Phasen verstärkter differentieller Subsidenz (tektonische Aktivitätsphasen ?) zu Reliefakzentuierung und, damit einhergehend, zur Umgestaltung des Sedimentationsraumes. Besonders ein Ereignis im Unter-Coniac (deformis-Zone) kann offensichtlich in weiten Teilen Europas erkannt werden. Die biostratigraphische Gliederung wird mit Ammoniten und im höheren Ober-Turon und Unter-Coniac mit Inoceramen durchgeführt. Das basale Unter-Turon fehlt. Die Sedimentation setzt vermutlich erst in der höchsten devonense-Zvne des unteren Unter-Turon ein. Das obere Unter-Turon ist durch die Zone des Mammites nodosoides gekennzeichnet. Das Mittel-Turon kann in die Zonen des Kamerunoceras turoniense, Romaniceras kallesi, Romaniceras ornatissimum und Romaniceras deverianum untergliedert werden. Im Ober-Turon werden Faunenzonen ausgehalten (Assemblage Zones). Es können (in aufsteigender Reihenfolge) die AZ des Subprionocyclus neptuni/ Romaniceras deverianum, die AZ des Mytiloides incertus/Subprionocyclus neptuni und die AZ des Mytiloides scupini/Prionocyclus germari erkannt werden. Das Unter-Coniac wird in eine untere Zone des Cremnoceramus rotundatus und eine obere Zone des Cremnoceramus deformis unterteilt. Zehn Bio-Events und Akmen werden erkannt und auf ihr Potential für die regionale wie überregionale Korrelation geprüft. Dies sind das Mytiloides-Akme [Unter-Turon (?)]; das K. turoniense/Mytiloides-Event (turoniense-Zone), das R. kallesi-Event (kallesi-Zone), das R. ornatissimum-Event (ornatissimum-Zone), das R. Deverianum-Event (neptuni/deverianum- AZ), das Mytiloides incertus/Mieraster leskei (klein)-Event (incertus/neptuni-AZ), das M. Leskei (groß)-Event (scupini/germari-AZ), das Sternotaxis plana-Event (scupini/ germari- AZ), das Didymotis I-Event (scupini/ germari-AZ) und das Didymotis II-Event (Turon/Coniac-Grenze). Für eine Korrelation nach Deutschland oder England eignen sich besonders das turoniense/ Mytiloides-Event, das deverianum-Event sowie das incertus/leskei (klein)- und leskei (groß)-Event. Das plana-Event kann vermutlich nach Norddeutschland korreliert werden. Sechs sedimentäre Sequenzgrenzen (SB) werden im Zeitraum Turon bis Unter-Coniac erkannt und datiert. SB Tu 1 liegt vermutlich im Unter-Turon und kann wegen eines ausgeprägten Hiatus im Cenoman/Turon-Grenzbereich datiert werden. Die stratigraphischen Positionen der folgenden Sequenzgrenzen können wie folgt datiert werden: SB Tu 2: obere turoniense-Zone (Mittel-Turon), SB Tu 3: deverianum-Zont (höchstes Mittel-Turon), SB Tu 4: Top neptuni/deverianum- AZ (Ober-Turon), SB Tu 5: untere scupini/ germari-AZ (Ober-Turon), SB Co 1: höhere deformis-Zone des Unter-Coniac. Die Sedimentationszyklen werden als "3rd order cycles" sensu Haq et al. (1988) interpretiert. Die stratigraphische Position der Sequenzen werden unter kurzer Diskussion der jeweiligen regionalen Biostratigraphie mit sequentiellen Gliederungen für Tunesien, Spanien, Frankreich, Südengland und Deutschland (Westfalen, Niedersachsen, Sachsen) mit nur mäßigem Erfolg verglichen. Die "global cycle chart" erweist sich als Standard für untauglich. Schlüsselwörter: Nordkantabrien, Spanien, Nordkantabrisches Becken, Turon, Unter-Coniac, tektono-sedimentäre Entwicklung, Biostratigraphie, Eventstratigraphie, Sequenzstratigraphie, überregionaler Vergleich.
    Description: The Lower Turonian to Lower Coniacian succession of the Upper Cretaceous series from the Santander area (Cantabria, Spain) was investigated in detail by means of lithology, bio-, event and sequence stratigraphy. The sediments of a mixed, siliciclastic/calcareous system were deposited in an E-W trending basin that was bordered to the South by the palaeozoic Cabuemiga High. The northern boundary formed the Liencres High, a palaeo-structure that had its position in the Bay of Biscay not far away from the present day shoreline. Towards the West, a connection to the shallower, Asturian Cretaceous basins existed. For this individual basin the term "North Cantabrian Basin" is suggested herein. It developed during the Early Cretaceous (Valanginian/Hauterivian) as a result of block rotation along E-W trending major faults. The NCB is structurally separated from the Basco-Cantabrian Basin by the N-S trending Rio Miera Flexure in the East. Proximal sediments are characterized by (glauconitic) nodular to massively bedded limestones. In distal environments, marl/limestone alternations accumulated. During phases of regression, allochthonites with only limited geographic extent were shed into the basin. Within the Turonian to Early Coniacian, five phases of accelerated, differential subsidence (tectonic phases ?) were recognized. Especially the Early Coniacian movement (deformis Zone) can be observed in wide parts of Europe. Biostratigraphic subdivision is mainly based on ammonites, and, in the Late Turonian and Early Coniacian, on inoceramids. Lower Lower Turonian strata are missing and sedimentation started presumably in the upper part of the Watinoceras devonense Zone of the early Early Turonian. The late Early Turonian is represented by the Mammites nodosoides Zone. The Middle Turonian can be subdivided into the zones of (in ascending order) Kamerunoceras turoniense, Romaniceras kallesi, Romaniceras ornatissimum, and Romaniceras deverianum. The Late Turonian is subdivided into assemblage zones (AZ). These are (in ascending order) the AZ of Subprionocyclus neptuni/Romaniceras deverianum, the AZ of Mytiloides incertus/Subprionocyclus neptuni and the AZ of Mytiloides scupini/Prionocyclus germari. The latter correlates with the scupini Zone of Germany. The Early Coniacian is characterized by a zone of Cremnoceramus rotundatus and a higher zone of Cremnoceramus deformis. Ten events are recognized and dated. These are the Mytiloides-acme [Lower Turonian (?)], the Kamerunoceras turoniense/Mytiloides event (turoniense Zone), the Romaniceras kallesi event (kallesi Zone), the Romaniceras ornatissimum event (ornatissimum Zone), the Romaniceras deverianum event (neptuni/deverianum AZ), the Mytiloides incertus/Micraster leskei (small) event (incertus/neptuni the Micraster leskei (large) event (scupini/germari AZ), the Sternotaxis plana event (scupini/germari AZ), the Didymotis I event (scupini/germari KL) and the Didymotis II event (Turonian/Coniacian boundary). These events can, to some extent, be used for interbasinal correlation. Especially the turoniense/Mytiloides, the deverianum, the plana and the Didymotis events can be correlated to northern Germany. The incertus/leskei (small) and the leskei (large) events can be traced to England. Six sedimentary sequence boundaries (SB) were recognized and dated. These are: SB Tu I : Lower Turonan, SB Tu 2: late turoniense Zone, SB Tu 3: deverianum Zone, SB Tu 4: top neptuni/deverianum KL, SB Tu 5: early scupini/germari AZ, SB Co 1: late deformis Zone. The sedimentary sequencec, delimited by the SBs, are interpreted to represent 3rd order cycles sensu Haq et al. (1988). The position of the sequences is (based on a brief discussion of the reginal biostratigraphic subdivisions) compared with cycle charts from Tunisia, Spain, France, southern England, and Germany (Westphalia, Lower Saxony, Saxony) with only limited results. The "global" cycle chart appears to be not helpful for detailed sequence correlation and should be abandoned as a standard.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:560 ; Sequenzstratigraphie ; Biostratigraphie ; Event-Stratigraphie ; Kreide ; Sedimentationsbecken ; Geologische Korrelation ; Stratigraphie ; Fazies ; Coniacium ; Turonium
    Language: German
    Type: doc-type:book
    Format: 176
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  • 10
    facet.materialart.
    Unknown
    Selbstverlag Fachbereich Geowissenschaften, FU Berlin
    In:  Herausgeberexemplar
    Publication Date: 2024-04-17
    Description: At the beginning of Late Jurassic both the Lochen (LA) and the Cracow areas (CA) were palaeotopographic highs in an epicontinental basin located at the stable northern margin of the Tethyan Ocean. The topographically high position of the LA was probably caused by intensive carbonate production which proceeded on a small sea-floor bulge located close to the boundary between middle and lower parts of the low-angle carbonate ramp. Lack of deep structural control of this rise caused prograding facial unification during the Oxfordian and Kimmeridgian and led to gradual disappearance of the LA individuality in relation to the neighbouring areas. The topographical high of the CA resulted from anomalously low subsidence rate in comparison to the adjacent areas which has lasted at least for the whole Oxfordian. Low subsidence directly gave rise to the development of a barrier (so-called Cracovian Platform) which separated the interior basin in the north from the deeper parts of the basin in the south. Topography of the Polish part of epicontinental basin along the Czestochowa-Cracow line corresponds to the low-gradient rimmed carbonate shelf which graded laterally (to the northeast and east) into the low-angle carbonate ramp. Stratigraphic subdivision of Upper Jurassic strata is very precise in the LA and rather poor in the CA due to scarcity of ammonites in the massive facies which predominates in the latter area. However, ammonite fauna from both areas belongs to the same German-Polish Submediterranean Subprovince which allows to attempt the correlation of lithologies and determination of factors which controlled deposition. Both the studied areas show distinct differences in the development of carbonate buildups. In the LA the main components of carbonate buildups during whole Oxfordian and the Early Kimmeridgian were siliceous sponges and microbolites whilst in the CA the flourishing growth of microbolites and gradual decline of siliceous sponges domination took place during the Late Oxfordian. The sediment was initially diversified into the two varieties: that formed by siliceous sponges and the microbolites incipient rigid framework, and the soft mud. In such carbonate buildups stromatactis cavities might have developed even in early diagenesis due to internal erosion of the soft mud. The principal reason of the internal erosion was turbulent water flow through the sediment. However, in generally low-energy sedimentary environments such flow could be triggered by submarine gravity flows or strong bottom currents. Pseudonodular textures encountered in carbonate buildups in both the areas resulted from shallow-burial diagenesis. During the burial diagenesis some parts of the sediment has been disintegrated under the pressure of overlying strata owing to the existing open spaces and different susceptibility to compaction showed by the incipient rigid framework and the soft sediment. Deposition in the LA was controlled mainly by sea-level pulses and ecological factors. In the CA principal control was provided by subsidence rate supported by synsedimentary tectonics, sea-level changes and ecological factors. All these controlling factors were variable in time which provoked changes in carbonate production rates from intensive, aggradational growth of the buildups to drowning of the carbonate ramp and rimmed shelf. The drowning of carbonate ramp on which the LA was located took place at the Oxfordian/Kimmeridgian break. It is documented by spectacular development of redeposited pelagites of skeletal-calciturbidites type with abundant fragments of Saccocoma sp. which have appeared for the first time in mass quantities in the Upper Jurassic. By analogy, it can be inferred that in the CA similar Saccocoma-calciturbidites prove the drowning of rimmed shelf related to the same trangressive event at the Oxfordian/Kimmeridgian break.
    Description: Zu Beginn des Ober-Jura waren das Lochengebiet (Schwäbische Alb) und der Raum Krakau (Südpolen) übereinstimmend Hochgebiete eines epikontinentalen Beckens auf dem passiven nördlichen Schelf der Tethys. Die topographische Hochposition des Lochengebietes war vermutlich durch eine hohe Karbonat-Produktion bedingt, welche auf einer schmalen submarinen Schwelle nahe dem Übergangsbereich zwischen unterem und mittlerem Abschnitt einer flach geneigten Karbonatrampe erfolgte. Während des Oxfordiums und Kimmeridgiums war die Lochenschwelle tektonisch inaktiv und ermöglichte einen zunehmenden Faziesausgleich mit den benachbarten Gebieten und führte dadurch zu einer successiven Aufgabe ihrer individuellen Entwicklung. Die Hochposition der Krakau-Region resultierte aus ihrer im Vergleich zur Umgebung ungewöhnlich geringen Subsidenzrate, welche mindestens während des gesamten Oxfordiums anhielt. Die geringe Subsidenz war unmittelbare Ursache für die Entwicklung einer Barriere (die sogenannte Krakau-Plattform), welche das seichtere Innenschelf-Becken im Norden von den tieferen Beckenanteilen im Süden trennte. Die Topographie des polnischen Anteils dieses epikontinentalen Beckens entsprach entlang der Czestochowa-Krakau-Linie einem „low-gradient rimmed carbonate shelf, der nach Nordosten und Osten lateral in eine flache Karbonatrampe überging. Die stratigraphische Gliederungsmöglichkeit der Ober-Jura-Schichfolge ist im Lochengebiet gut und feinauflösend, in der Krakau-Region dagegen, in der die Massenfazies vorherrscht, aufgrund der selteneren Ammonitenfunde zum Teil problematisch. Ungeachtet dessen, gehören die Ammoniten-Vergesellschaftungen beider Regionen derselben deutsch-polnischen, submediterranen Faunensubprovinz an und ermutigen zu einer Korrelation beider lithologischer Abfolgen und einer vergleichenden Abstraktion der Steuermechanismen für die Sedimentation. Beide Gebiete zeigen deutliche Unterschiede in der Entwicklung von karbonatischen Buildups. Im Lochen-Gebiet stellen während des Oxfordiums und Unter-Kimmeridgiums Kieselschwämme und Mikrobolithe die Hauptkomponenten der Riffstrukturen, während in der Krakau-Region die Bedeutung der Mikrobolithe und Kieselschwämme während des Ober-Oxfordiums successive abnimmt. Ursprünglich erfolgte eine Differenzierung der Riffstrukturen in einen autochthonen Hartsubstrat-Anteil, in dem Kieselschwämme und Mikrobolithe eine rigides Gerüst stellten, und in schlammiges Weichsubstrat. Innerhalb der Riffkörper konnten sich wohl frühdiagenetisch durch die interne Erosion der Schlamm-Anteile Stromatactis-Gefüge bilden. Grundsätzlich kann eine solche interne Erosion auf turbulente Porenwasserströme zurückgeführt werden. In den vorliegenden sedimentären Stillwasser-Milieus könnte ein solcher Porenwasserstrom durch submarine Schuttströme oder starke Bodenströmungen ausgelöst worden sein. Pseudonodulare Strukturen, wie sie in den Buildups beider Untersuchungsgebiete angetroffen wurden, werden durch eine flache Versenkungsdiagenese erklärt. Während dieser Vorgänge wurden unter dem Druck der Sedimentauflast aufgrund des vorhandenen, offenen Porenraumes und der unterschiedlichen Kompaktion von primär zementierten Riffkalken und des mergeligen Weichsubstrates Karbonatanteile gelöst. Das Sedimentationsgeschehen wurde in der Lochen-Region vor allem durch Meeresspiegel-Schwankungen und ökologische Parameter beeinflußt. In der Krakau-Region konnte als hauptsächlicher Kontrollfaktor die Subsidenzrate erkannt werden, in deren Gefolge synsedimentäre Tektonik, Änderungen von Meeresspiegel und der ökologischen Faktoren einhergingen. Veränderungen dieser Steuerfaktoren in der Zeit beeinflußten jeweils die Rate der Karbonatproduktion von intensiv (Aggradation der Buildups) bis zum Ertrinken der Karbonatrampe bzw. des Schelfrandes. Das Abtauchen der Karbonatrampe setzte in der Lochen-Region an der Oxfordium-Kimmeridgium-Wende ein. Es wird durch eine auffällige sedimentäre Entwicklung dokumentiert: Resedimentation pelagischer Kalke (skeletal calciturbidites), die häufig Saccocoma-Reste enthalten. Erste Massenvorkommen von Saccocoma treten in der Erdgeschichte im Oberjura auf. Ähnliche Saccoco/na-Kalkturbidite an der Oxfordium-Kimmeridgium-Grenze markieren in der Krakau-Region das Abtauchen des „rimmed shelf. Sie können auf dasselbe transgressive Ereignis zurückgeführt werden.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:560 ; ddc:554 ; Paläobiologie
    Language: English
    Type: doc-type:book
    Format: 116
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  • 11
    Publication Date: 2024-04-17
    Description: The present study considered calcareous nannofossils from material represented by outcrops of Flysch successions of the External Hellenides belt in the area of the Ionian Zone (I.Z.), northwestern Greece. The studied outcrops are located in Epirus mainland and the Ionian island Korfu. Three subdivisions have been traditionally in literature distinguished in the I.Z., the Internal, Middle and External (moving from east to the west), each of which was subsequently recognized in the Flysch deposits as well. Aim of the study was, a refinement of the current biostratigraphic resolution of the area through detailed taxonomic descriptions and consequently, a reliably better correlation of the investigated sedimentary deposits with the help of calcareous nannofossils. The biostratigraphic data were also processed semiquentitatively (frequency variations and distributions), in order to accurately determine important biohorizons. For this purpose, the nannofossils were studied under the LM and the SEM, from ten closely sampled sections representing clastic sequences of all the three subdivisions of the I.Z. The investigated sections are situated at about 39° northern mid latitudes, a fact which resulted to mixed nannoflora assemblages of low and high latitudes character. The sections are namely: Elatos, Korfovouni (Internal I.Z. subdivision), Kato Despotiko, Strouga Goumenou and Ekklisia (Middle I.Z. subdivision), lower and upper Argyrotopos, National Road, Monos and Anacharavi (External I.Z. subdivision). They were found to range in age from the latest Eocene to the Early Miocene. Based on the systematic palaeontology, 107 species of calcareous nannofossils were observed and documented in the studied material. Among them, a new species Rhabdosphaera epirotica sp. nov. was described, and four recombinations were proposed. Moreover, two calcareous dinoflagellate cysts, Cervisiella saxea and Obliquipithonella sp. were reported for the first time from the I.Z. in Greece. Despite the mid latitude palaeogeographic position of the sections, all the conventional calcareous nannofossil zonal markers for the Oligocene and Early Miocene were recorded, although some in fewer abundances than in low latitudes. Improving the biostratigraphic reliability, a new zonational scheme was here developed and proposed for the Oligocene to Early Miocene interval. It was mainly established on use of redefined biohorizons and composed of five zones and five subzones following below: 1. Latest Eocene: Ericsonia formosa Partial-range Zone, 2. Oligocene: llselithina fusa / Ericsonia formosa Concurrent-range Zone, Ericsonia formosa-Reticulofenestra umbilicus/R. hillae Interval Zone, Cyclicargolithus abisectus Partial-range Zone, including the subzones: Rhabdosphaera spp. Interval Subzone, and Sphenolithus predistentus Interval Subzone, Reticulofenestra scissura Interval Zone, including the Sphenolithus delphix Abundance Subzone, and 3. Earliest Miocene: Triquetrorhabdulus spp. Partial-range Subzone Sphenolithus conicus Interval Subzone. Based on a new biohorizon of the absolute First Occurrence (FO) of llselithina fusa, the Eocene/Oligocene (E/O) boundary was identified in the lower part of the Argyrotopos section. On the absence of disc-shaped discoasters, the I. fusa biohorizon represented a better approximation of the boundary, which was clearly correlated with the other studied sections of the three subdivisions of the I.Z. The Oligocene/Miocene (O/M) boundary was identified in the Monos section located in the Plataria syncline (External I.Z.), but Early Miocene strata were recorded in the Middle I.Z. as well. This boundary was placed at the Last Common Occurrence (LCO) biohorizon of the Reticulofenestra scissura. Moreover, six associate bioevents were reported near the O/M boundary, among them the highest occurrence of I. fusa, located above the boundary, in the Anacharavi section of Korfu island (western part of the External I.Z.). For the first time were evaluated reworked together with „autochton“ taxa of calcareous nannofossils in Greece. Maximum diversity values along each of the studied sections, have shown increased reworking and erosional processes in the Internal subdivision of the I.Z. than in the Middle and the External ones. This is interpreted to be connected with the higher tectonic instability along the Pindos thrust to the east, in relation to the central and western parts of the Ionian basin mainly during the Oligocene.
    Description: Die der vorliegenden Arbeit zugrundeliegenden kalkigen Nannofossilien stammen von Flyschabfolgen der Externen Helleniden (Ionische Zone) Nordwest-Griechenlands.So wurden in die Untersuchung Aufschlüsse des Festlandes in Epirus und der Ionischen Insel Korfu aus dem stratigraphischen Intervall vom obersten Eozän bis zum untersten Miozän einbezogen. Die Ionische Zone (I.Z.) wird traditionell von Osten nach Westen in die Interne, Mittlere und Externe Subzone unterteilt. Diese Einteilung läßt sich auch auf die Flyschablagerungen übertragen. Ziel der Arbeit ist eine Verfeinerung der bestehenden Biostratigraphie durch detaillierte taxonomische Beschreibungen, um damit eine bessere Korrelation der untersuchten Ablagerungen mit Hilfe der kalkigen Nannofossilien zu erreichen. Mit einer halbquantitativen Erfassung der biostratigraphischen Daten (Häufigkeitsvariation und -Verteilung) gelingt es darüberhinaus, einzelne Biohorizonte genauer zu definieren. Zu diesem Zwecke wurde das kalkige Nannoplankton von zehn eng-beprobten Profilen aus klastischen Abfolgen aller drei Subzonen der I. Z. unter dem Licht- und Elektronenmikroskop (REM) untersucht. Die Profile im einzelnen sind: Elatos und Korfovouni (Interne Subzone), Kato Despotiko, Strouga Goumenou und Ekklisia (Mittlere Subzone), Unter bzw. Ober Argyrotopos, National Road, Monos und Anacharavi (Externe Subzone). Zur Ablagerungszeit befanden sich die untersuchten Profile in einer nördlichen Paläobreite um 39°, was zu einer gemischten Nannoflora aus charakteristischen Vertretern niedriger und höherer Breiten führte. In dem untersuchten Material konnten insgesamt 107 Spezies von kalkigem Nannoplankton gefunden und dokumentiert werden. Die Art Rhabdosphaera epirotica nov. sp.wird neu beschrieben und vier Rekombinationen werden vorgeschlagen. Darüberhinaus konnten zwei kalkige Dinoflagellatenzysten Cervisiella saxea und Obliquipithonella sp. zum ersten Mal in der I.Z. nachgewiesen werden. Trotz der paläogeographischen Position der Profile in mittleren Paläobreitenbereich konnten alle konventionellen Zonenleitformen des kalkigen Nannoplanktons für das Oligozän und das Untermiozän gefunden werden, einige davon jedoch in geringerer Häufigkeit als in den niedrigeren Breiten. Durch die Verbesserung der biostratigraphischen Genauigkeit wird hier ein neues mediterranes Zonenschema für das Oligozän und das Untermiozän entwickelt, das im wesentlichen auf neu definierten Biohorizonten basiert. Es enthält fünf Zonen und fünf Subzonen: 1. Jüngstes Eozän: Ericsonia formosa Partial-range Zone, 2. Oligozän: llselithina fusa/Ericsonia formosa Concurrent-range Zone, Ericsonia formosa-Reticulofenestra umbilicus/R. hillae Interval Zone, Cyclicargolithus abisectus Partial-range Zone, gegliedert in den Subzonen: Rhabdosphaera spp. Interval Subzone, und Sphenolithus predistentus Interval Subzone, Reticulofenestra scissura Interval Zone, die eine Subzone enthält: Sphenolithus delphix Abundance Subzone, und 3. Ältestes Miozän: Triquetrorhabdulus spp. Partial-range Subzone Sphenolithus conicus Interval Subzone. Mit dem ersten Auftreten (FO) von llselithina fusa wird ein neuer Biohorizont definiert, mit dem die Grenze Eozän/Oligozän (E/O) in dem unteren Teil des Argyrotopos-Profils nachgewiesen wird. Trotz der Abwesenheit von scheibenförmigen Discoasteriden läßt sich nun diese Grenze mit dem I. fusa-Biohorizont besser fassen und kann eindeutig mit den Profilen in den beiden anderen Subzonen der I.Z. korreliert werden. Die Oligozän/Miozän-Grenze (O/M) konnte im Monos-Profil der Plataria-Synklinale (Externe I.Z.) charakterisiert werden. Untermiozän ließ sich aber auch in der Mittleren Subzone nachweisen. Die Grenze O/M ist durch das letzte Vorkommen (LCO) von Reticulofenestra scissura bestimmt. Sechs assoziierte Bioevents fallen in diesen Grenzbereich, darunter im Anacharavi-Profil der Insel Korfu (Westteil der Externen Subzone) das jüngste Vorkommen von I. fusa, unmittelbar über der Grenze O/M. Zum erstem Mal für Griechenland konnten aufgearbeitete Taxa von kalkigen Nannofossilien zusammen mit den autochthonen Taxa nachgewiesen werden. Ein Vergleich der maximalen Diversitätswerte in den untersuchten Profilen zeigt eine signifikant höhere Aufarbeitungsrate in der Internen Subzone gegenüber der Mittleren und Externen Subzonen. Dieser Umstand dürfte mit der höheren tektonischen Instabilität entlang der Pindos-Decken-Front im Osten des Arbeitsgebietes Zusammenhängen.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:560 ; Tertiär ; Flysch ; Nannofossil ; Biostratigraphie ; Systematik ; Paläobiologie ; Paläontologie
    Language: English
    Type: doc-type:book
    Format: 206
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  • 12
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    Unknown
    Selbstverlag Fachbereich Geowissenschaften, FU Berlin
    In:  Herausgeberexemplar
    Publication Date: 2024-04-22
    Description: Im nördlichen Bereich der Provinz Kantabrien (Nordspanien) wurden Sedimente der "Mittelkreide" (Oberalb und Cenoman) unter stratigraphischen, faziellen und sedimentologi sehen Gesichtspunkten bearbeitet. Strukturell gehört die Region zum Nordkantabrischen Becken (NCB), dessen Einsenkung mit tektonischen Bewegungen im mittleren Valangin beginnt. Das NCB ist eines der zahlreichen Sedimentbecken, die sich infolge des mesozoischen Riftings und Spreadings in der Biscaya auf dem iberischen Nordschelf bilden. Strukturgeologisch zeigt das NCB eine E/W-Ausrichtung zwischen zwei Hochgebieten im S und N (Cabuemiga-Rücken und Liencres-Hoch), die als "Santillana-Achse" bezeichnet wird. Im W grenzt das NCB an das Paläozoikum des Asturischen Massivs. Östlich Santander wird es strukturell und faziell durch die N/S-streichende Rio-Miera-Flexur vom hochsubs identen Basko-Kantabrischen Becken abgetrennt. Die Sedimentation im NCB wird stark von tektonischen Ereignissen im sich bildenden Biscaya-Ozeans beeinflußt, durch welche die Strukturierung der Schichtenfolge in sedimentäre Megasequenzen erfolgt. Im Alb und Cenoman können folgende Megasequenz-Grenzen erkannt werden, durch welche die Megasequenzen des Alb und Cenoman definiert werden: • Santander-Tectoevent (Cenoman/Turon-Grenzbereich) • Vraconian Tectoevent (hohes Oberalb) • "Mittelalb-Ereignis" ("break-up unconformity", [?hohes] Unteralb). Das Mittelalb-Ereignis fuhrt im Arbeitsgebiet zum Zerbrechen der faziell wenig differenzierten Urgon-Karbonatplattformen des Clansay (Oberapt/Unteralb) in ostvergente Kippschollen. In den entstehenden N/S-orientierten Halbgräben werden im Mittelaib fluvio-deltaische Klastika abgelagert, während auf den Hochschollen eine Verkarstung erfolgt. Im tiefen Oberalb initiiert ein transgressiver Puls die weit verbreitete Ablagerung mariner Sedimente im NCB. Dieses transgressive Ereignis ist in ganz Iberien nachzuweisen. Im Laufe des Oberalb kommt es zu einem Onlap mariner Sedimente auch auf den ehemals emergenten Hochschollen und zu einem Ausgleich des durch das Mittelalb-Ereignis erzeugten Paläoreliefs. Durch weit verbreitete Emersion des NCB's infolge tektonischer Bewegungen im oberen Oberalb (Vraconian Tectoevent) wird die sedimentäre Megasequenz des Alb beendet. Die sedimentäre Megasequenz des Cenoman beginnt im Alb/Cenoman-Grenzbereich mit der Progradation deltaischer Klastika. Die im NCB der Santillana-Achse folgend von W nach E kanalisiert werden. Dieses "Santillana-Delta" mündet im Bereich Galizano/Langre östlich Santander in das Basko-Kantabrische Becken und verzahnt sich dort mit den Prodelta-Sedimenten des Valmaseda-Deltas ("Schwarzer Flysch" der Bilbao-Region). Die differentielle Subsidenz im NCB in Folge des Vraconian Tectoevents wird von den Delta-Sedimenten ausgeglichen. Im tiefen Untercenoman (untere Mantelliceras mantelli-Zone) gestaltet eine bedeutende transgressive Faziesentwicklung das gesamte NCB in einen vollmarinen, karbonatisch dominierten Ablagerungsraum um. Dieser transgressive Puls dürfte mit der "Untercenoman-Transgression" sensu lato korrelieren. Im Cenoman können folgende Ammoniten-Biozonen erkannt werden: • Obercenoman: Eucalycoceras pentagonum-Zone, und Metoicoceras geslinianum-Zone [pars] • Mittel cenoman: [Cunningtoniceras inerme-Zone], Acanthoceras rhotomagense-Zone und A. jukesbrownei-Zone • Untercenoman: Mantelliceras mantelli-Zone und M. dixoni-Zone. Das höchste Obercenoman (oberer Teil der geslinianum-Zone und die Neocardioceras juddii-Zone) fehlt im NCB. In der oberen mantelli-Zonc des NCB etabliert sich in weiten Bereichen die flachmarine Karbonat-Fazies der Altamira-Plattform, die sich östlich der Rio-Miera-Flexur mit mächtigen Beckensedimenten (Mergel, Knollenkalke, Kalk/Mergel-Rhythmite) verzahnt. Im Mittel- bis unteren Obercenoman wird die Altamira-Plattform in drei Schritten von E nach W "ertränkt". Die prominenten Drowning-Unconformities (mineralisierte Hartgründe mit Ammoniten) werden dabei stufenweise nach W jünger. Im Obercenoman (pentagonum-Zono) ist die gesamte Altamira-Plattform ertränkt und weite Teile des NCB werden in die Beckensedimentation einbezogen. Die Ablagerungsgeschichte des Cenoman wird durch das Santander-Tectoevent in der oberen geslinianum-Zonc beendet, infolgedessen weite Teile des NCB trockenfallen. Selbst in hochsubsidenten Beckenprofilen ist der Cenoman/Turon-Grenzbereich durch eine Schicht lücke gekennzeichnet. Die fazielle Entwicklung der cenomanen Megasequenz ist durch die schubweise voranschreitende ("pulsierende") Cenoman-Transgression geprägt. Insgesamt können im Cenoman sechs Sequenzgrenzen (SB's) erkannt werden, durch die die Ablagerungssequenzen DS Ce I bis VI definiert werden. Ihre stratigraphischen Positionen sind: • SB Ce VI = obere geslinianum-Zonc • SB Ce V = Wende Mittel/Obercenoman • SB Ce IV = basale jukesbrownei-Zone • SB Ce III = hohe dixoni-Zone • SB Ce II = obere mantelli-Zone • SB Ce I = untere mantelli-Zone. Im regionalen Vergleich zeigt sich für das Cenoman eine gute Übereinstimmung mit sequentiellen Gliederungen aus dem Basko-Kantabrischen Raum. Überregionale Vergleiche dokumentieren, daß viele der Meeresspiegel-Bewegungen im Cenoman (z.B. SB Ce III, mfz in der rhotomagense-Zone, SB Ce IV, HST in der pentagonum-Zone) über weite Entfernungen korreliert werden können und wahrscheinlich eustatische Signale darstellen. Die Korrelation mit der "globalen Meeresspiegel-Kurve" (Exxon Chart) ist schlecht. Betrachtet man die im Cenoman im NCB abgelagerten Sedimente als "2nd-order cycle", so zeigt sich ein übergeordneter transgressiver Trend mit einem maximalen Onlap im Obercenoman innerhalb der mfz von DS Ce VI (pentagonum-Zone). Das NCB zeigt im Oberalb und Cenoman im biogeographischen Vergleich starke tethyale Einflüsse. Das Turrilites scheuchzerianus/Neohibolites ultimus-Evert. im tiefen Mittelcenoman des NCB korreliert in bio-, sequenz- und Isotopen-stratigraphischer Hinsicht mit dem Actinocamax primus-Event NW-Europas, womit eine eventstratigraphische Anbindung an das "temperierte" Cenoman erreicht werden kann.
    Description: Mid-Cretaceous (Upper Albian and Cenomanian) sediments in the northern part of the province of Cantabria (northern Spain) were investigated with the emphasis on stratigraphical and sedimentological aspects. Structurally, the area belongs to the North Cantabrian Basin (NCB), the depositional history of which started with distensional tectonic movements in the Mid-Valanginian. The NCB is one of the numerous sedimentary basins which developed on the north Iberian continental margin in consequence of the rifting and spreading in the Bay of Biscay during Mesozoic times. It is a gulf-like basin with an E/W-elongation ("Santillana axis"). In the south and in the north the NCB is bordered by the Cabuemiga Ridge and the Liencres High, respectively. To the west, the NCB is bordered by the Palaeozoic Asturian Massif; in the east, the N/S-trending Rio Miera Flexure forms a structural boundary to the strongly subsiding Basco-Cantabrian Basin. The depositional history of the NCB was strongly influenced by tectonic events which can be related to the evolving Biscay Ocean. These tectoevents give rise to a gross subdivison of the succession into sedimentary megasequences. Three tectonically induced megasequence boundaries can be recognized in the Albian and Cenomanian, defining the Albian and Cenomanian megasequences: • Santander-Tectoevent (Cenomanian/Turonian boundary interval) • Vraconian Tectoevent (late Late Albian) • "Middle Albian event" (break-up unconformity, [?late] Early Albian). The "Middle Albian event" caused a disintegration of the widespread Urgonian Clansay platforms (Late Aptian/Early Albian) into a palaeo-relief of eastward-dipping tilted blocks. In the N/S trending halfgrabens, fluvio-deltaic clastics were deposited during the Middle Albian, whereas the exposed tilted block crests were karstified. A strong transgressive pulse flooded the NCB in the early part of the Late Albian, giving rise to the widespread deposition of marine Upper Albian sediments. This transgressive event can also be recognised in southern Iberia and Portugal. During the later part of the Late Albian, the emergent crestal areas of the tilted blocks were onlapped by marine sediments, resulting in the filling-up of the Middle Albian palaeo-relief. Tectonic movements in the latest Albian (Vraconian tectoevent), causing emergence in wide parts of the NCB, terminated the Albian Megasequence. The Cenomanian megasequence started in the Albian/Cenomanian boundary interval with progradation of deltaic clastics, which were channelized (following the Santi liana-axis) into an eastward direction. This "Santillana Delta" flowed into the Basco-Cantabrian Basin east of Santander, where an interfingering with the prodeltaic sediments of the Valmaseda Delta ("Black Flysch" of the Bilbao area) took place. The differential subsidence in the NCB due to the Vraconian tectoevent was compensated by the deltaic sedimentation. In the lower part of the Mantelliceras mantelli Zone, a transgressive pulse flooded the NCB and led to the deposition of marine, predominantly calcareous sediments. This transgressive event is thought to correlate with the "Early Cenomanian transgression" sensu lato. In the Cenomanian succession of the NCB, the following ammonite zones can be recognized: • Late Cenomanian: Eucalycoceras pentagonum Zone and Metoicoceras geslinianum Zone [pars] • Middle Cenomanian: [Cunningtoniceras inerme Zone], Acanthoceras rhotomagense Zone and A. jukesbrownei Zone • Early Cenomanian: Mantelliceras mantelli Zone and M. dixoni-Zone. The upper part of the Upper Cenomanian (upper part of the geslinianum Zone and the Neocardioceras juddii Zone) is missing in the NCB. In the upper part of the mantelli Zone, deposition of the shallow marine carbonate sediments of the Altamira Platform became established over large areas of the NCB. In the strongly subsiding area east of the Rio Miera Flexure, thick successions of basinal sediments (marls, nodular limestones, marl/limestone rhythmites) were deposited contemporaneously. During the Middle to early Late Cenomanian, the Altamira Platform was drowned in three successive steps from east to west. The developing drowning unconformities (condensed, mineralized hardgrounds with ammonites) young towards the west, resulting in a backstepping of the Altamira Platform. In the Late Cenomanian (pentagonum Zone), all former sites of shallow marine carbonate deposition were drowned. The depositional history of the Cenomanian was terminated in the higher part of the geslinianum Zone when tectonic movements of the Santander tectoevent caused widespread emersion of the NCB. The resulting Cenomanian/Turonian boundary hiatus can be recognized both in the condensation horizons on top of the submerged platform as well as in the basinal successions. The facies development of the Cenomanian Megasequence is dominated by the pulsatory nature of the "Cenomanian transgression". Within the Cenomanian succession of northern Cantabria, six sequence boundaries can be recognized, which define six depositional (3rd-order) sequences (DS Ce I - VI). The stratigraphic positions of the sequence boundaries (SB) are as follows: • SB Ce VI = upper geslinianum Zone • SB Ce V = Middle/Late Cenomanian boundary interval • SB Ce IV = basal jukesbrownei Zone • SB Ce III = upper dixoni Zone • SB Ce II = upper mantelli Zone • SB Ce I = lower mantelli Zone. Comparison of this sequential subdivision with regional cycle charts from the Basco-Cantabrian area reveals good agreement, whereas correlation with the "global sea-level curve" (Exxon Chart) is poor. The extent to which many of the sea-level events in the Cenomanian (e.g. SB Ce III, mfz within the rhotomagense Zone, SB Ce IV, HST in the pentagonum Zone) can be correlated between basins elsewhere in Europe and Tunisia suggests that they were probably of eustatic nature. Considering the Cenomanian Megasequence as a "2nd-order cycle", an overall transgressive trend occurs throughout the Cenomanian; maximum coastal onlap was reached during the maximum flooding of DS Ce VI (pentagonum Zone). Palaeobiogeographically, the NCB shows strong tethyan affinities in the Late Albian and Cenomanian. The Turrilites scheuchzerianus/Neohibolites ultimus event in the early Middle Cenomanian permits a correlation with the Actinocamax primus event of the temperate Cenomanian of northern Europe by means of bio-, sequence and isotope stratigraphy.
    Description: Los sedimentos del Cretácico medio (Albiense superior/Cenomaniense) en la parte septentrional de la Provincia de Cantabria han sido estudiados, centrándose en aspectos estratigráficos y sedimentolögicos. El área de estudio pertenece estructural mente a la Cuenca Norcantábrica (NCB), cuya historia depositional comenzó con movimientos tectónicos distensivos en el Valanginiense medio. La NCB es una de las numerosas cuencas sedimentarias que se desarrollaron en el margen continental norteibérico como consecuencia del "rifting" y apertura del golfo de Vizcaya durante el Mesozoico. Es una cuenca con forma de golfo con una elongatión E/W ("Eje de Santillana"). Los límites septentrional y meridional de la NCB son el "Liencres High" y el Escudo de Cabuemiga respectivamente. Hacia el Oeste, la NCB queda confinada por el Macizo Paleozoico Asturiano; en el Este, el límite estructural conocido como Flexión del Río Miera de dirección N/S, la separa de la Cuenca Vasco-cantábrica mucho más subsidente. La historia deposicional de la NCB estuvo fuertemente influenciada por eventos tectónicos que pueden ser relacionados con la evolution del oceano de Vizcaya. Estos tectoeventos dieron lugar a una gruesa subdivision de la sucesión en megasecuencias sedimentarias. Tres límites de megasecuencias, que están inducidos por la tectónica, pueden ser reconocidos en el Albiense y Cenomaniense, definiendo respectivamente las megasecuencias albienses y cenomanienses: • Tectoevento de Santander (intervalo límite del Cenomaniense/Turoniense) • Tectoevento Vraconiense (Albiense superior tardío) • "Evento del Albiense medio" (discordancia de ruptura, Albiense inferior [?tardio]). El "Evento del Albiense medio" causo una desintegración de las plataformas urgonianas clansayenses (Aptiense superior/Albiense inferior), que estaban muy extendidas en paleorelieves de bloques basculados hacia el Este. Se produjo durante el Albiense medio una sedimentatión clástica fluvio-deltaica en los semi-grabenes, de dirección N/S, mientras que las cimas expuestas de los bloques basculados sufrieron procesos de karstificatión. Un fuerte pulso transgresivo inundó la NCB al comienzo del Albiense superior, dando lugar al depósito de sedimentos marinos en el Albiense superior due alcanzaron una muy amplia extensión. Durante la parte superior del Albiense superior las crestas de los bloques basculados fueron recubiertas por sedimentos marinos, indicando el equilibrio del paleorelieve en el Albiense medio. Los procesos tectónicos al final del Albiense superior (Tectoevento Vraconiense), que causaron la emersión de amplias zonas de la NCB, terminan la megasecuencia albiense. La megasecuencia cenomaniense comenzó en el limite Albiense/Cenomaniense con la progradatión de material clástico deltaico que fue canalizado (siguiendo el Eje de Santillana) hacia el Este. Dicho delta ("Delta de Santillana") discurria al Este de Santander hacia la Cuenca Vasco-cantabrica, interfiriendo con los sedimentos de prodelta del Delta de Valmaseda ("Flysch Negro"). En la parte inferior de la zona de Mantelliceras mantelli, un pulso transgresivo inundó la NCB y permitió el depósito de sedimentos marinos, predominantemente calcáreos. Este evento transgresivo puede ser correlacionado con la "transgresión del Cenomaniense initial" sensu lato. En la sucesion Cenomaniense de la NCB pueden ser reconocidas las siguientes zonas: • Cenomaniense superior: Zona de Eucalycoceras pentagonum y la Zona de Metoicoceras geslinianum [pars] • Cenomaniense medio: [Zona de Cunningtoniceras inerme], Zona de Acanthoceras rhotomagense y Zona de A. jukesbrownei • Cenomaniense inferior: Zona de Mantelliceras mantelli y Zona de M. dixoni. La parte superior del Cenomaniense superior (parte superior de la zona de M. geslinianum y la Zona de Neocardioceras judii) está ausente en la NCB. Los sedimentos marino-someros de naturaleza carbonatada de la "Plataforma de Altamira" comenzaron a depositarse en amplias zonas de la NCB en la parte superior de la zona de mantelli. Al Este de la Flexión de Río Miera, en un área fuertemente subsidente, fueron depositadas contemporáneamente potentes sucesiones de sedimentos de cuenca (margas, calizas nodulares y ritmitas de marga/caliza). Durante el Cenomaniense medio hasta la base del Cenomaniense superior, la Plataforma de Altamira fue inundada desde el Este al Oeste en tres intervalos sucesivos. El desarrollo de discordancias de inundatión ("drowning unconformities" = series condensadas, "hardgrounds" mineralizados con ammonites) resultan más recientes hacia el Oeste, concluyendo en un basculamiento hacia atrás de la Plataforma de Altamira. En el Cenomaniense superior (Zona de pentagonum) todos los anteriores lugares caracterizados por el depósito de carbonates marino-someros fueron anegados. La historia deposicional del Cenomaniense acabó en la parte alta de la zona de geslinianum, cuando movimientos tectonicos del Tectoevento de Santander causaron la emersión generalizada de la NCB. El hiato resultante puede ser reconocido en los horizontes condensados a techo de las plataformas sumergidas e igualmente en las sucesiones de cuenca. El desarrollo de facies del Cenomaniense está dominado por el carácter de pulsos que tuvo la "transgresión cenomaniense". Seis límites de secuencia pueden reconocerse dentro de la sucesión cenomaniense del norte de Cantabria, los cuales definen seis secuencias deposicional es de tercer orden (DS Ce I-VI). La positión estratigráfica de los límites de secuencia (SB) son los siguientes: • SB Ce VI = parte superior de la Zona de geslinianum • SB Ce V = intervalo límite del Cenomaniense medio/superior • SB Ce IV = base de la Zona de jukesbrawnei • SB Ce III = parte superior de la Zona de dixoni • SB Ce II = parte superior de la Zona de mantelli • SB Ce I = parte inferior de la Zona de mantelli. Una comparación de esta subdivisión secuencial con las tablas de ciclos regionales del reino vasco-cantábrico revela una buena correlatión, mientras que la correlatión con la "tabla global" ("Exxon chart") es pobre. La correlatión entre varias cuencas sugiere una causa eustática para los numerosos eventos de cambios del nivel del mar en el Cenomaniense (por ejemplo SB Ce III, mfz dentro de la Zona de rhotomagense, SB Ce IV, HST en la Zona de pentagonum). Considerando la megasecuencia del Cenomaniense como un "ciclo de segundo orden", una tendencia transgresiva general ocurrió a lo largo del Cenomaniense, el máxirno "onlap" costero fue alcanzado durante la máxima inundatión de la DS Ce VI (Zona de pentagonum). Desde el punto de vista paleobiogeográfico, la NCB muestra fuertes afinidades tethyales en el Albiense superior y el Cenomaniense. El "Evento de Turrilites scheuchzerianus/Neohibolites ultimus" al comienzo del Cenomaniense medio permite una correlation con el "Evento de Actinocamax primus" del Cenomaniense de la Provincia templada norteuropea.
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:560 ; Sedimentationsbecken ; Kreide ; Event-Stratigraphie ; Biostratigraphie ; Sequenzstratigraphie ; Albium ; Cenomanium ; Fazies ; Stratigraphie ; Geologische Korrelation ; Paläobiologie ; Paläontologie
    Language: German
    Type: doc-type:book
    Format: 278
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    In:  Tectonics, Warszawa, Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 16, no. 3, pp. 489-503, pp. 2121
    Publication Date: 1997
    Keywords: Plate tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geol. aspects ; Tectonics ; South ; America
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    In:  J. Struct. Geol., Washington D.C., Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 19, no. 11, pp. 1375-1392, pp. L08305
    Publication Date: 1997
    Keywords: Fracture ; Structural geology ; Rock mechanics ; JSG
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    In:  J. Geophys. Res., Ottawa, Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 102, no. B12, pp. 4957-4967, pp. 2371
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Fault zone ; JGR
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    In:  Geophys. J. Int., Beijing, Pergamon, vol. 131, no. 9, pp. 61-86, pp. 2135
    Publication Date: 1997
    Keywords: Stress ; NAF ; Fault plane solution, focal mechanism ; Stress ; Inversion ; Moment tensor ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geol. aspects ; Strike-slip ; Oever ; Over ; GJI
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    In:  Bull. Seism. Soc. Am., Paris, Pergamon, vol. 87, no. 5, pp. 1230-1243, pp. 1246
    Publication Date: 1997
    Keywords: Earthquake ; Source ; Strong motions ; BSSA
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    In:  Physics Today, Paris, Pergamon, vol. 50, no. 2, pp. 26-32, pp. 1246
    Publication Date: 1997
    Keywords: Planetology ; meteorites ; C14 ; evolution ; aggregation
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    In:  Geophys. Res. Lett., Warszawa, Elsevier, vol. 24, no. 11, pp. 1307-1310, pp. 1960, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Fault zone ; Geodesy ; GRL
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    In:  Tectonophys., Warszawa, Elsevier, vol. 269, no. 3-4, pp. 323-336, pp. B08402, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Seismicity ; Tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain)
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    In:  Geophys. J. Int., Leipzig, Birkhäuser Verlag, vol. 131, no. 5, pp. 171-178, pp. L15S17, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; FractureT ; Fore-shocks ; Seismicity ; GJI
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    In:  Geophys. Res. Lett., Leipzig, Birkhäuser Verlag, vol. 24, no. 22, pp. 2849-2852, pp. 2458, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: 7299 ; Seismology ; General ; or ; miscellaneous ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Inelastic ; Earthquake ; Modelling ; GRL
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  • 23
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    In:  J. Seismol. Res., Potsdam, ZIPE, vol. 20, no. 4, pp. 357-364, pp. 2156, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: China ; Seismicity ; Statistical investigations ; Seismology ; JSR
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    In:  Bull. Seism. Soc. Am., Luxembourg, Conseil de l'Europe, vol. 87, no. 2, pp. 484-493, pp. 2501, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Seismology ; Seismometer ; Instruments ; BSSA
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    In:  Eos, Trans., Am. Geophys. Un., Luxembourg, Conseil de l'Europe, vol. 78, no. 5, pp. 50, pp. B04313, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Earthquake hazard ; Review article
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    In:  J. Geophys. Res., Luxembourg, Conseil de l'Europe, vol. 102, no. B9, pp. 20,363-20,371, pp. 2501, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Fracture ; Friction ; Rock mechanics ; JGR
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    In:  Tectonophys., Warszawa, Conseil de l'Europe, vol. 269, no. 3-4, pp. 269-278, pp. L12S07, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Deep seismic sounding (espec. cont. crust) ; EUROPROBE (Geol. and Geophys. in eastern Europe)
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    In:  International Journal of Rock Mechanics and Mining Sciences, Taipei, Elsevier, vol. 34, no. 2, pp. 199-205, pp. B09401, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Anisotropy ; Physical properties of rocks ; Elasticity ; pores ; Rock mechanics
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    In:  Geophys. Res. Lett., Taipei, Elsevier, vol. 24, no. 16, pp. 2087-2090, pp. B02317, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Stress ; Modelling ; Plate tectonics ; 8155 ; Tectonophysics ; Plate ; motions ; general ; 8110 ; Continental ; tectonics ; general ; (0905) ; 8120 ; Dynamics ; of ; lithosphere ; and ; mantle ; 8150 ; Plate ; boundary ; general ; (3040) ; GRL
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    In:  Geophys. Res. Lett., London, Institution of Mining and Metallurgy, vol. 24, no. 6, pp. 707-710, pp. 1869, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geodesy ; Earthquake ; GRL
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    In:  Computers and Geosciences, Heidelberg, Elsevier, vol. 23, no. 7, pp. 715-724, pp. 2099, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Data analysis / ~ processing ; GIS ; DBMS ; C&G
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    In:  Pure and Applied Geophysics, Roma, Publicazioni dell'Istituto Nazionale di Geofisica, vol. 150, no. 3-4, pp. 563-583, pp. B04102, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Induced seismicity ; Seismicity ; Physical properties of rocks ; Fluids ; Inelastic ; Creep observations and analysis ; PAG
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    In:  Geophys. J. Int., Bonn, Hungarian Academy of Science, vol. 130, no. 1, pp. 1-16, pp. B04102, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Synthetic seismograms ; Inhomogeneity ; Waves ; Seismology ; GJI
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    In:  Geophys. Res. Lett., Luxembourg, Pergamon, vol. 24, no. 18, pp. 2347-2350, pp. 2131, (ISBN 1-86239-117-3)
    Publication Date: 1997
    Keywords: 1242 ; Geodesy ; Gravimetry, Gravitation ; Seismic ; deformations ; (7205) ; 7260 ; Seismology ; Inelastic ; Modelling ; Rheology ; GRL ; Theory ; and ; modeling ; 8159 ; Tectonophysics ; Rheology ; crust ; and ; lithosphere
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    In:  Bull. Seism. Soc. Am., Amsterdam, Elsevier, vol. 87, no. 5, pp. 1368-1374, pp. 2083, (ISBN 1-86239-117-3)
    Publication Date: 1997
    Keywords: Attenuation ; Coda (waves, ~ of seismograms) ; Geothermics ; Seismology ; BSSA
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    In:  Rev. Geophys., Luxembourg, U.S. Geological Survey, vol. 35, no. 3, pp. 343-384, pp. B05309, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: Volcanology ; Geodesy ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Review article
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    In:  Computers & Geosciences, Luxembourg, Conseil de l'Europe, vol. 23, no. 3, pp. 251-257, pp. B05309, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: borehole ; geophysics, ; spline ; interpolation, ; gauss ; quadrature, ; resistivity ; departure ; curves
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    In:  Physik in unserer Zeit, London, Amer. Sc., vol. 6, no. 1-4, pp. 246-250, pp. 1001, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: history ; physics ; 2nd ; world ; war ; German ; nuclear ; programme
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    Publication Date: 1997
    Keywords: Earthquake hazard ; Earthquake risk ; Rapid damage assessment ; software ; Statistical investigations ; EQS
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    In:  Eos, Trans., Am. Geophys. Un., Münster, Amer. Sc., vol. 78, no. 35, pp. 369-370, pp. 1228, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: Volcanology ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Seismicity ; Plate tectonics ; Gudmundsson ; Bjoernsson ; Bjornsson ; Grinvold
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    In:  Geophys. J. Int., Münster, 3, vol. 130, no. 3, pp. 551-582, pp. L12311, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geol. aspects ; Plate tectonics ; Tectonics ; Fault zone ; GJI
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    In:  J. Struct. Geol., Luxembourg, Am. Soc. Mech. Eng., vol. 19, no. 11, pp. 1393-1404, pp. L12311, (ISBN 0-471-26610-8)
    Publication Date: 1997
    Keywords: Fluids ; Fault zone ; Fluids ; Structural geology ; JSG
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    In:  Geophys. Res. Lett., Warszawa, Icelandic Meteorological Office, Ministry for the Environment,, vol. 24, no. 24, pp. 3273-3276, pp. L05602, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Fluids ; Stress ; 5114 ; Physical ; properties ; of ; rocks ; Permeability ; and ; porosity ; GRL ; 5139 ; Transport ; properties ; 8045 ; Structural ; geology ; (new ; field, ; replaces ; single ; entry ; 8165) ; Role ; of ; fluids ; 8159 ; Tectonophysics ; Rheology ; crust ; and ; lithosphere
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    In:  J. Geophys. Res., Warszawa, Eötvös Lorand Geophysical Institute of Hungaria, vol. 102, no. B8, pp. 18,175-18,177, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Review article ; scientific drilling ; JGR
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    In:  J. Geophys. Res., Warszawa, Eötvös Lorand Geophysical Institute of Hungaria, vol. 102, no. B11, pp. 24,459-24,467, pp. 2342, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Seismicity ; Fault zone ; Mineralogy ; JGR
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    In:  Eos, Trans., Am. Geophys. Un., Warszawa, Eötvös Lorand Geophysical Institute of Hungaria, vol. 78, no. 49, pp. 565, 570, 571, pp. 2342, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Volcanology ; Source ; Project report/description ; Garces
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    In:  Tectonophys., Basel, Birkhäuser Verlag, vol. 269, no. 3-4, pp. 179-198, pp. B05S07, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Seismics (controlled source seismology) ; Review article ; Reflectivity
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    In:  Phys. Earth Plan. Int., Luxembourg, Conseil de l'Europe, vol. 102, no. 1-2, pp. 33-50, pp. B05S07, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Anisotropy ; earth mantle ; Rheology ; Gravimetry, Gravitation ; Isostasy ; PEPI
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  • 49
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    In:  J. Geodynamics, Luxembourg, Conseil de l'Europe, vol. 24, no. 1-4, pp. 21-36, pp. B05S07, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Seismicity ; Geol. aspects
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  • 50
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    In:  Eos, Trans., Am. Geophys. Un., Luxembourg, Conseil de l'Europe, vol. 78, no. 35, pp. 369, 373, 377, pp. B05S07, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Statistical investigations ; Earthquake hazard ; Magnitude ; Earthquake risk
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  • 51
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    In:  J. Struct. Geol., Luxembourg, Conseil de l'Europe, vol. 19, no. 1, pp. 59-75, pp. B05S07, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Fault zone ; Tectonics ; Stress ; Structural geology ; JSG
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  • 52
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    In:  Journal of Structural Geology, Luxembourg, Conseil de l'Europe, vol. 19, no. 6, pp. 893-896, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Fault zone ; Fracture ; Rock mechanics ; Structural geology ; JSG
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  • 53
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    In:  J. Geophys. Res., Münster, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 102, no. B8, pp. 18,267-18,288, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Reflectivity ; Deep seismic sounding (espec. cont. crust) ; Reflection seismics ; scientific drilling ; Seismics (controlled source seismology) ; Lueschen ; Luschen ; Kloeckner ; Klockner ; Duerbaum ; Durbaum ; JGR
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  • 54
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    In:  Bull. Seism. Soc. Am., Münster, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 87, no. 4, pp. 888-903, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Shear waves ; Attenuation ; Intensity ; BSSA
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  • 55
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    In:  Bull. Seism. Soc. Am., Münster, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 87, no. 4, pp. 866-887, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Site amplification ; Strong motions ; basin ; USA ; California ; Inversion ; Earthquake risk ; BSSA
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  • 56
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    In:  Bull. Seism. Soc. Am., Münster, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 87, no. 5, pp. 1267-1280, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Low velocity layer ; Fracture ; Rock mechanics ; BSSA
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  • 57
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    In:  Bull. Seism. Soc. Am., Münster, 3, vol. 87, no. 3, pp. 551-568, pp. L23301, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Discrimination ; Nuclear explosion ; BSSA
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  • 58
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    In:  International Journal of Rock Mechanics and Mining Sciences, Oxford and Edinburgh, Blackwell Scientific Publications, vol. 34, no. 1, pp. 45-58, pp. L23301, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1997
    Keywords: Stress ; Stress measurements ; Hydraulic fracturing ; Fracture
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  • 59
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    In:  J. Seism. Res., Taipei, Ges. f. Geowissenschaften e.V., vol. 20, no. 1, pp. 1-8, pp. 1858, (ISSN 0343-5164)
    Publication Date: 1997
    Description: Huangfu is family name !
    Keywords: Earthquake ; China ; JSR
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  • 60
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    In:  Tectonophysics, Taipei, Am. Inst. Min. Metal. Petr. Eng., vol. 275, no. 7, pp. 261-272, pp. 1858, (ISSN 0343-5164)
    Publication Date: 1997
    Keywords: Stress ; Stress measurements ; EUROPROBE (Geol. and Geophys. in eastern Europe) ; VGS ; Borehole Televiewer ; Borehole breakouts ; Borehole geophys.
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  • 61
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    In:  J. Geophys. Res., Stuttgart, Schweizerbart'sche Verlagsbuchhandlung, vol. 102, no. B12, pp. 27,379-27,391, pp. 2077, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Source ; WAVE ; Seismology ; Rheology ; JGR
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  • 62
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    In:  Science, Amsterdam, Schweizerbart'sche Verlagsbuchhandlung, vol. 277, no. 1, pp. 1621-1622, pp. L07302, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geodesy ; Global Positioning System ; Very Long Baseline Interferometry ; Strain ; Seismicity ; Project report/description
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  • 63
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    In:  Rev. Geophys., Leipzig, Schweizerbart'sche Verlagsbuchhandlung, vol. 35, no. 2, pp. 109-124, pp. L07302, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: paleo ; Seismology ; Seismicity ; Review article
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  • 64
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    In:  Computers and Geosciences, Berlin, Schweizerbart'sche Verlagsbuchhandlung, vol. 23, no. 7, pp. 793-805, pp. 1978, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Maximum likelihood ; Data analysis / ~ processing
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  • 65
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    In:  Eos, Trans., Am. Geophys. Un., Washington, Schweizerbart'sche Verlagsbuchhandlung, vol. 78, no. 16, pp. 169, pp. L14306, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: scientific drilling ; Borehole geophys. ; ice
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  • 66
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    In:  Geophys. J. Int., San Francisco, Schweizerbart'sche Verlagsbuchhandlung, vol. 129, no. 2, pp. 252-268, pp. TC1011, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Stress ; post-glacial ; uplift ; GJI
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  • 67
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    In:  Tectonophys., London, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 282, no. 1-4, pp. 99-115, pp. B02206, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Stress ; Spain ; Borehole breakouts ; Stress measurements ; Mueller ; Muller
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  • 68
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    In:  J. Geophys. Res., London, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 102, no. B2, pp. 2835-2852, pp. B02206, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Seismicity ; Earthquake catalog ; seismic Moment ; JGR
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  • 69
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    In:  Geophys. J. Int., London, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 131, no. 3-4, pp. 505-525, pp. B02206, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; Review article ; Real time earthquake monitoring ; early ; warning ; Earthquake precursor: statistical anal. of seismicity ; VAN ; GJI
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  • 70
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    In:  Bull. Seism. Soc. Am., Helsinki, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 87, no. 4, pp. 904-917, pp. B05S14, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: High frequency ... ; Earthquake ; Inversion ; Strong motions ; Data analysis / ~ processing ; Fracture ; Source ; BSSA
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  • 71
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    In:  Geophys. Res. Lett., Helsinki, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 24, no. 20, pp. 2523-2526, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: 7209 ; Seismology ; Earthquake ; dynamics ; and ; mechanics ; Rheology ; Inelastic ; Geothermics ; GRL ; 8010 ; Structural ; geology ; (replaces ; 8165) ; Fractures ; and ; faults ; Fracture ; 8123 ; Tectonophysics ; Dynamics, ; seismotectonics ; ductile ; instability
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  • 72
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    In:  Nature, Amsterdam, Elsevier Scientific Publishing Company, vol. 390, no. 6659, pp. 461-464, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Publication Date: 1997
    Keywords: Real time earthquake monitoring ; Seismology ; Earthquake hazard
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  • 73
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    In:  Nippon Kenchiku Gakkai Kozokei Ronbunshu (Journal of Structural and Construction Engineering), Amsterdam, Elsevier Scientific Publishing Company, vol. 33, no. 498, pp. 59-66, pp. 2265, (ISSN: 1340-4202)
    Publication Date: 1997
    Description: An earthquake early warning system has been developed to obtain real-time profile of impending ground motion in order to minimize earthquake hazard. The system is designed to analyze the P-wave portion of earthquake signal and instantaneously evaluate earthquake parameters such as magnitude, epicentral distance and focal depth. Neural networks are employed to add self-learning functions to the existing system and to reduce the error of estimation for site-specific applications. The neural network has been successfully trained with recorded data to produce accurate and informative earthquake parameters.
    Keywords: Early warning systems (earthquakes, volcanic eruptions, tsunamis etc.) ; Seismology ; Chaotic behaviour ; Data analysis / ~ processing ; Japan ; Artificial intelligence (AI) ; Seismometer ; Waves ; Magnitude ; Source parameters ; Detectors ; Seismic networks ; computer ; application ; system ; Instruments
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  • 74
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    In:  Physics and Chemistry of the Earth, Amsterdam, Elsevier Scientific Publishing Company, vol. 22, no. 1-2, pp. 157-160, pp. B03309, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Stress ; Geomagnetics ; susceptibility ; magnetization ; Laboratory measurements ; simulation
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  • 75
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    In:  Bull. Seism. Soc. Am., Amsterdam, Elsevier Scientific Publishing Company, vol. 87, no. 1, pp. 39-49, pp. 2277, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Seismology ; Earthquake precursor: prediction research ; Seismicity ; Wave form analysis ; seismicity ; wave ; velocity ; Seismics (controlled source seismology) ; BSSA
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  • 76
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    In:  Phys. Earth Plan. Int., New York, Conseil de l'Europe, vol. 104, no. 1-3, pp. 23-36, pp. TC2009, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Seismology ; P-waves ; Scattering ; Synthetic seismograms ; Statistical investigations ; PEPI
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  • 77
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    In:  J. Geophys. Res., Basel, Elsevier Science Publishers, vol. 102, no. 5-6, pp. 591-604, pp. L03307, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geodesy ; Data analysis / ~ processing ; JGR
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  • 78
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    In:  Tectonophys., Basel, Elsevier Science Publishers, vol. 272, no. 2-4, pp. 269-290, pp. L15S20, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Plate tectonics ; EUROPROBE (Geol. and Geophys. in eastern Europe) ; Modelling ; Strength
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  • 79
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    In:  Tectonophys., Tulsa, 450 pp.; 2nd modified and expanded ed., Society of Exploration Geophysics, vol. 274, no. 1-3, pp. 97-115, pp. L21319, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: China ; Fault zone ; Tectonics ; Structural geology ; Geol. aspects ; Stress
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  • 80
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    In:  Scientific Drilling, Chengdu, Sichuan, China, 4, vol. 6, no. 2, pp. 113-119, pp. 2027, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: P-waves ; Dearth Core ; Velocity ; Laboratory measurements ; Borehole Compensated Sonic log
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  • 81
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    In:  J. Geophys. Res., Stuttgart, Pergamon, vol. 102, no. B12, pp. 27,635-27,649, pp. 2316, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Fracture ; Friction ; Rock mechanics ; JGR
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  • 82
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    In:  Geophys. Res. Lett., Stuttgart, Pergamon, vol. 24, no. 15, pp. 1895-1898, pp. L13613, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: AnisotropyS ; Seismology ; Volcanology ; cracks and fractures (.NE. fracturing) ; Seismics (controlled source seismology) ; 7205 ; Seismology ; Continental ; crust ; (1242) ; GRL ; 0935 ; Exploration ; geophysics ; Seismic ; methods ; (3025)
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  • 83
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    In:  Nature, San Francisco, Pergamon, vol. 385, no. B3, pp. 19-20, pp. 1447, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; Review article
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  • 84
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    In:  Computers and Geosciences, Stuttgart, Pergamon, vol. 23, no. 8, pp. 851-857, pp. L13613, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Data analysis / ~ processing ; Fault plane solution, focal mechanism ; Stress
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  • 85
    Publication Date: 1997
    Keywords: Shear waves ; Velocity depth profile ; Rayleigh waves ; Surface waves ; Dispersion ; Attenuation ; Borehole geophys. ; BSSA ; SRICHWALSKI
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  • 86
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    In:  Physics Today, Stuttgart, Pergamon, vol. 50, no. 9, pp. 17-19, pp. 2134, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Fracture ; Friction ; Laboratory measurements ; Rock mechanics ; Rock mechanics ; Earthquake precursor: prediction research ; Earthquake precursor: deformation or strain ; Inelastic
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  • 87
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    In:  J. Seismol. Res., Stuttgart, Pergamon, vol. 20, no. 1, pp. 9-12, pp. 2316, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; Earthquake ; China ; Earthquake hazard ; preparedness ; early ; warning ; Earthquake risk ; JSR
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  • 88
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    In:  J. Geophys. Res., Stuttgart, Pergamon, vol. 102, no. B8, pp. 17,967-17,980, pp. 2316, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Plate tectonics ; JGR
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  • 89
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    In:  Geophys. J. Int., Stuttgart, Pergamon, vol. 129, no. B8, pp. 571-578, pp. 2316, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Three dimensional ; Body waves ; Rayleigh waves ; P-waves ; Shear waves ; Diffraction ; GJI ; Sanchez ; Rodriguez ; Zuniga ; Luzon ; Garcia ; Martin
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  • 90
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    In:  J. Geophys. Res., Ottawa, 3-4, vol. 102, no. 9, pp. 11,719-11,729, pp. 2287, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Stress ; Inhomogeneity ; Tectonics ; JGR
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  • 91
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    In:  Phys. Earth Plan. Int., Ottawa, 3-4, vol. 101, no. 1-2, pp. 49-60, pp. 1057, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity ; Seismicity ; PEPI
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  • 92
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    In:  Tectonophys., Kunming, China, 3-4, vol. 277, no. 1-3, pp. 137-146, pp. 1057, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Modelling ; Seismicity ; Aftershocks ; Statistical investigations
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  • 93
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    In:  J. Volcanology and Geothermal Research, Zagreb, 3-4, vol. 77, no. 1-4, pp. 305-311, pp. B06305, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Volcanology ; Seismicity ; Seismology ; Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity
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  • 94
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    In:  Bull. Seism. Soc. Am., New York, 1-2, vol. 87, no. 4, pp. 1069-1073, pp. 2554, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Source ; Nuclear explosion ; Statistical investigations ; Seismology ; DeconvolutionP ; BSSA
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  • 95
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    In:  Earth planet. Sci. Lett., Luxembourg, Conseil de l'Europe, vol. 148, no. 1-2, pp. 157-170, pp. L19605, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Stress ; Plate tectonics ; Subduction zone ; Modelling ; Seismicity ; plate ; boundaries, ; orogeny, ; lithosphere ; FLORENZO
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  • 96
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    In:  Geophys. Res. Lett., Hannover, Conseil de l'Europe, vol. 24, no. 6, pp. 715-718, pp. L19605, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Earthquake ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Subduction zone ; GRL
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  • 97
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    In:  Geophys. J. Int., Luxembourg, Conseil de l'Europe, vol. 131, no. 5564, pp. 530-533, pp. L24308, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Earthquake precursor: prediction research ; Earthquake sociological and political aspects ; GJI
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  • 98
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    In:  J. Geophys. Res., Edmonton, Conseil de l'Europe, vol. 102, no. 39, pp. 15,081-15,090, pp. B05402, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Seismicity ; Statistical investigations ; Hypocentral depth ; Fracture ; Source ; JGR
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  • 99
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    In:  Computers and Geosciences, Edmonton, Conseil de l'Europe, vol. 23, no. 10, pp. 1039-1049, pp. 2340, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Vertical seismic profiling ; SG3 ; Borehole geophys. ; EUROPROBE (Geol. and Geophys. in eastern Europe)
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  • 100
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    In:  Geophys. Res. Lett., Edmonton, Conseil de l'Europe, vol. 24, no. 14, pp. 1839-1842, pp. 2340, (ISSN: 1340-4202)
    Publication Date: 1997
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Volcanology ; Geothermics ; 1208 ; Geodesy ; Gravimetry, Gravitation ; Crustal ; movements ; intraplate ; (8110) ; GRL ; 8135 ; Tectonophysics ; Hydrothermal ; systems ; (8424) ; 9820 ; 1878 ; Hydrology ; Water/energy ; interactions
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