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56th EAEG Meeting
- Conference date: 06 Jun 1994 - 10 Jun 1994
- Location: Vienna, Austria
- ISBN: 978-90-73781-05-4
- Published: 10 June 1994
521 - 537 of 537 results
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Post-orogenic Oligio Miocene rifting of the thickened Pyrenean lithosphere - The Gulf of Lion Margin Formation
Authors J. M. Gaulier, N. Chamot-Rooke, F. Jestin and IBS-Gulfof Lion Working GroupThe structural style of the Oligocene extension across the margin of the Gulf of Lion varies drastically from the upper margin to the lower margin (Serrane et al. this volume). The northernmost area on-shore and off-shore shows several graben bounded by planar high-angle faults (Benedicto et al. this volume).
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Ecors-Gulf of Lion deep seismic profiles revisited - Geodynamical implications
Authors G. Pascal, C. Truffert, G. Marquis, P. Labaume and IBS-Gulfof Lion Working GroupThe 1988 Ecors Gulf of Lion survey aimed at imaging the deeg structure of this extensional margin formed by Oligo-Miocene rifting. It consisted of two long profiles from the shelf to the deep basin (oriented and labeled NW and NS) and a short one in the deep basin (labeled ZZ, de Voogd et al. 1991). The NW profile, tied on the Sirocco and GLP2 wells, follows the reinterpreted Expanding Spread Profiles (ESP) 201 to 207 (Pascal et al., 1993). The NS line intersects NW profile at ESP 202.
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Gravity thrust halotectonics in the extensional Camargue Basin (Gufl of Lion Margin, SE France)
Authors M. Valette, A. Benedicto, P. Labaume and IBS-Gulfof Lion Working GroupThe onshore Camargue basin (SE France; fig. 1a) results from the Oligocene-Aquitanian rifting of the Gulf of Lion (Séranne et al., this volume). The basin is bounded to the NW by the major extensional, SE-dipping Nimes Fault. It contains more than 4000 metres of syn-rift sediments which unconformably overly Mesozoic carbonates.
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Structural modelling of crustal transects across the Northern North sea
Authors J. I. Faleide, T. Odinsen, P. Christiansson, R. H. Gabrielsen, A. M. Berge and R. FaersethThe present study focuses on the deep structure of the Viking Graben and adjacent areas of the northern North Sea (60-62°N) (Fig. 1), and its implications for the amount, timing and nature of the lithospheric extension. Regional transects have been constructed based on high quality conventional seismic reflection profiles (to 6-7 s twt) and deep seismic reflection profiles (to 15 s twt). Well information have been used for stratigraphic calibration and compilation of seismic velocities for depth conversion. The new and partly reprocessed data make a better documentation of the pre-Jurassic sediment distribution, basement relief and deep fault geometry possible. These observations put important constraints on structural modelling of the crustal transects which are affected by two active stretching events (Permian?-Early Scythian and Late Jurassic-earliest Cretaceous), each followed by thermal cooling.
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Stratigraphic signature of some marine syn-rift successions
Authors R. Ravnas, R. J. Steel and P. TheriaultUpper Jurassic marine syn-rift successions from the onshore Lusitanian Basin (Portugal) and Helmsdal Boulder Beds (Scotland) and the offshore Oseberg-Brage, Brae and Visund fields (Viking Graben) have been studied.
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Mineralogy, provenance and seismic velocity of sediments offshore Western Norway
Authors K. Bjorlykke, H. Jordt, B. Thyberg, R. Simmons and J. I. FaleideThe mineralogical composition of sediments outside the cored intervals are poorly known in sedimentary basins like the North Sea. The provenance of the sediments strongly influences the grain size distribution and the mineralogy of clastic sediments. Reservoir properties of sandstones are to a large extent controlled by the primary sorting and mineralogy, since this determines to a large extent subsequent diagenetic changes. The mechanical properties and seismic velocities of shales are also strongly influenced by biogenic input of carbonate and silica.
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Cyclicity and basin axis shift in a piggy-back basin - Modelling the Tremp Ager Basin (Eocene) South Pyrenees
By W. NijmanDuring the Eocene the Tremp-Ager Basin was formed by the advancing Central-South Pyrenean thrust sheet. It was the second in a succession of thrust sheet synclines accompanied by outward depocentre migrations in the Early Paleocene, the Late Eocene and the Oligocene.
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Numerical modelling of crustal deformation in faulted regions - The importance of extension rates
Authors M. ter Voorde, S. Cloetingh and G. BertottiThe fundamental building block of extensional basins is a localized rift sub-basin, overlain by a more regional postrift thermal subsidence basin. The highly simplified pure shear model of McKenzie (1978) predicts that the ratio of the synrift to postrift thickness is constant for given crustal and lithosphere thickness. Kusznir and Ziegler (1992) developed a more sophisticated model including faults, and concluded that the synrift to postrift ratio is controlled by the location (and thus spacing) of the faults and their individual amounts of displacement. In both of these studies an instantaneous stretching phase was assumed.
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Tectonic evolution of the Vienna and Danube Basin (Slovakia)
Authors A. C. Lankreijer, S. Cloetingh, M. Kovac, P. Pitonak and M. HloskaThe Vienna and Danube basins are situated in the Eastern Alpine, Western Carpathian and Pannonian area junction. They are intramontane strike-slip related basins whose depocentres attain depths of more than 5500m in the Vienna basin and more than 8500m in the Danube basin.
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Reflection tomography - Velocity model reconstruction
Authors K. Sydykov, I. Nepomnyaschikh and V. MatveyevReflection tomography has the advantage of the other technologies for lateral velocity heterogeneities determination together with local ones. It was shown (Bohm et al., 1993) that horizontal velosity gradient and depth of the reflector can be uniquely recovered from surface seismic data when vertical variations of velocity are substituted by their averages.
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Typical geological models of kazakhstan and geophysical exploration
Authors K. Sydykov, S. Daukeyev, V. Zimmer and V. PokidovThe paper presents the sequence of typical seismic models classification of Kazakhstan geological media. We take as classification basis the continuity degree of the seismic information providers - impedance leaps, elastic property lateral continuity and reflectors configuration.
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Interpretation 3D seismic survey in slovakia part of Vienna Basin
More LessIn 1989 was performed in the slovakia part of Vienna Basen 3 dimension seismic survey. This measure was in area Závod-Studienka-Borský Jur and covered 95,8 km². It was the first 3D measure on the territory of slovakia. Numerical processing of measured date was performed by Geofyzika.a.s. Brno. Interpretation of sesmic date was realized at the seismic workstation GeoQuest.
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Reinterpretation of geophysical and geological data in the oldest exploration area of the Vienna Basin
Authors B. Salyova, G. Hnatova and P. PolesnakThis paper presents new knowlegde and results in geological building and hydrocarbon exploration in the northern part of the Vienna Basin in slovakia. It is the oldest area of the basin with the discovery of the first oil deposit in 1913 near Gbely.
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New data on geological structure of Akzharzhanatan Area of Precaspian Basin
Authors E. Khabibulin, V. Korneyev and V. ArzyutovIn 1989-1992 Aktyubinsk Geophysical Expedition conducted regional seismic survey CDP method of 48 - 72 fold, wide line technology. 60 - 80 kilometre profiles passed across the border of the Precaspian Basin's eastern edge. The seismic data obtained have been interpreted together with the deep well log data.
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Geophysical results of the international Danreg Project
Authors P. Dzuppa, L. Nemesi and W. SeiberlThe Austrian, Hungarian and slovakiaian geological and geophysical institutions agreed in 1990 that they would unify their knowledge about an area of 20,000 km², along the Vienna - Bratislava - Budapest reach of the Danube.
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Lithostratigraphic seismic and seismic anomalies as possible phenomenons of hydrocarbon traps
Authors B. Salyova and A. PetrikSeismic stratigraphy (Ch.E. Peyton, ed. /1977/ : Seismic Stratigraphy - applications to hydrocarbon exploration. APG Memoir 26, Tulsa) acts as a rectifying factor in the hydrocarbon prospecting specifying seismofacial units which are the suitable place to accumulate hydrocarbons and serve as an introductory method for solving problems in the areas with a lower grade of exploration. Litostratigraphic seismic (M. Lavergne /1973/: Seismique stratigraphique et lithologique. Rev. Ass. Franc. des Techn. du Petrol, vol 22, november 1973) plays a specifying role and is much more detailed due to localizing and defining the seismic picture of the supposed hydrocarbon deposit.
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slovakiaian part of the Vienna Basin - Exploration results - Traps in deltaic deposits - Further perspective
By V. HlavatyThe slovakiaian part of the Vienna Basin comprises the area limited by the Austrian border in the West and the Malé Karpaty Mts. in the East.
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