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  • 1
    Call number: STR 11/08
    In: Scientific Technical Report STR - Data
    Type of Medium: 12
    Pages: Online-Ressource
    Series Statement: Scientific Technical Report STR - Data 11/08
    Branch Library: GFZ Library
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  • 2
    Call number: M 11.0024
    In: Chemie der Erde
    Type of Medium: Monograph available for loan
    Pages: 202 S. , Ill., graph. Darst. , 28 cm
    Series Statement: Chemie der Erde Bd. 70.2010,3, Suppl.
    Note: Erscheinungsjahr in Vorlageform:2010
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    Call number: STR 11/02
    In: Scientific Technical Report STR - Data
    Type of Medium: 12
    Pages: Online-Ressource
    Series Statement: Scientific Technical Report STR - Data 11/02
    Branch Library: GFZ Library
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  • 4
    Publication Date: 2012-02-13
    Description: The Central European Basin System (CEBS) includes the former Northern and Southern Permian Basins together with superimposed Meso-Cenozoic sub-basins and contains a thick layer of Upper Permian (Zechstein) salt. This salt was mobilized in response to several post-Permian tectonic events. In order to analyse the regional relationship between the structural pattern of the Meso-Cenozoic sedimentary cover and the distribution of the Upper Permian salt, a 3D structural model of the CEBS has been constructed. In this model, the Permian salt is resolved as an extra layer for the entire basin system. According to the 3D structural model, the salt layer is strongly deformed as a result of halokinetic activity. The thickest salt is localized within salt walls and diapirs, reaching up to 9 km of thickness. A regional structural 3D analysis of the overburden in relation to underlying ductile salt demonstrates that the geometry of the sedimentary cover is strongly complicated by a variety of salt structures. The withdrawal of the Permian salt appears to have played a key role in both deposition and deformation of Meso-Cenozoic deposits in addition to tectonically forced regional subsidence.
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  • 5
    Publication Date: 2017-01-31
    Description: Sedimentary basins represent geological archives. Accordingly, 3D basin models that integrate geological and geophysical observations can be used to reproduce not only their present-day structural configuration and distribution of physical properties, but also their evolution including the subsidence history. For example, the thickness of deposited sediments reflects the amount of subsidence caused by the sediment load. The corresponding load-dependent vertical movements (called isostatic subsidence) can be sequentially subtracted from the total subsidence in order to reconstruct past depth configurations. Another aspect of basin subsidence is caused by thermal processes that can also be approximated by studying the present-day basin configuration. If the basin formation is related to lithospheric stretching and thinning, it initially involves a thermal disturbance due to which the geothermal gradient is increased by an amount depending on the observed strain. After stretching has ceased, the lithosphere starts cooling down and approaches a thermal equilibrium. This cooling process is accompanied by an increase in rock density and related thermal subsidence, which can also be assessed. By calculating the two subsidence components for certain stratigraphic intervals, the corresponding temporal changes in water depths (paleobathymetries) can be reconstructed for our understanding of subsidence dynamics. This research methodology was applied to the conjugate passive continental margins of Africa and Argentina in order to analyse and compare the evolution of sedimentary basins after the formation of the South Atlantic. This study mainly focussed on the Argentinian Colorado Basin because of its complex evolution and economic resource potential.
    Type: Article , NonPeerReviewed
    Format: text
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  • 6
    Publication Date: 2017-11-04
    Description: The causes of continental breakup are still poorly understood. More and more it becomes evident that classical concepts of deep-mantle versus intra-plate forces controlling continental breakup and shaping the subsequent evolution of the bordering passive margins, including associated vertical and horizontal movements, need to be revised. Instead of thinking in terms of active versus passive rift models or magma-poor versus magma-rich margins, concepts are needed that perceive these geodynamic processes in a three dimensional continuum evolving through time. The South Atlantic margins, often considered as a classical example for a plume related continental breakup, seem to be a perfect site to revisit and to test such new concepts. Traces of intense magmatism are present on both conjugate margins as well as aseismic ridges connecting them with a supposed current plume location below the island of Tristan da Cunha. Of these ridges, the Walvis Ridge has been interpreted as one of the major hotspot trails in the South Atlantic. The German priority program SAMPLE (DFG-SPP 1375: South Atlantic Margin Processes and Links with onshore Evolution), funded by the German Science Foundation (DFG) from 2008 to 2016, addressed a number of fundamental questions related to the processes responsible for opening of the South Atlantic and the subsequent evolution of both continental margins. This volume assembles new results emerging from multidisciplinary research in the SAMPLE projects and those of other groups working in the region.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
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  • 7
    Publication Date: 2014-08-18
    Description: Petroleum systems located at passive continental margins received increasing attention in the last decade mainly because of deep- and ultra‐deep-water hydrocarbon exploration and production. The high risks associated with these settings originate mainly from the poor understanding of inherent geodynamic processes. The new priority program SAMPLE (South Atlantic Margin Processes and Links with onshore Evolution), established by the German Science Foundation in 2009 for a total duration of 6 years, addresses a number of open questions related to continental breakup and post‐breakup evolution of passive continental margins. 27 sub‐projects take advantage of the exceptional conditions of the South Atlantic as a prime “Geo‐archive.” The regional focus is set on the conjugate margins located east of Brazil and Argentina on one side and west of Angola, Namibia and South Africa on the other (Figure 1) as well as on the Walvis Ridge and the present‐day hotspot of Tristan da Cunha. The economic relevance of the program is demonstrated by support from several petroleum companies, but the main goal is research on fundamental processes behind the evolution of passive continental margins.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Book , NonPeerReviewed
    Format: application/pdf
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  • 8
    Publication Date: 2017-10-07
    Description: Abstract
    Description: The data files belong to a 3D structural model which covers the Vøring and Møre basins offshore Norway. In addition, a part of the exposed Fennoscandian Caledonides in the south-east and an oceanic crustal domain are covered by the model. The constructed 3D model is 490 km wide and 660 km long with a horizontal grid spacing of 2500 m, and a vertical resolution corresponding to the number of integrated layers. The lithospheric-scale 3D structural model includes 14 layers: (1) sea water;(2) upper Neogene (post-middle Miocene) sediments;(3) middle-upper Paleogene-lower Neogene (pre-middle Miocene) sediments;(4) lower Paleogene (Paleocene) sediments;(5) oceanic layer 2AB (basalts);(6) Upper Cretaceous (post-Cenomanian) sediments;(7) Lower Cretaceous (preCenomanian) sediments;(8) pre-Cretaceous sediments;(9) continental crystalline crust;(10) oceanic layer 3A;(11) high-density zones within the continental crystalline crust;(12) oceanic layer 3B;(13) high-density bodies within the lower continental crystalline crust;(14) lithospheric mantle. The thicknesses of the layers correspond to apparent thicknesses. In addition, data for earth surface topography is provided in the file: 0_Topography.dat.Model coordinates are based on the UTM 33 Zone (Northern Hemisphere) using the WGS 84 datum. The data format is ASCII and contains three columns (X, Y and Z), where X and Y are geographical coordinates (X = longitude, Y = latitude); Z (in m) is thickness of the layer or structural depth (base of layer) or surface elevation. The grid of each layer consists of 196 cells in W-E direction and 265 cells in S-N direction. The grid limits are the following: Xmin = -222590 and Xmax = 267410; Ymin = 6892200 and Ymax = 7552200. The vertical datum of the 3D model refers to the mean sea level. Organisation of data files: Data are organised in two folders (“Bases” and “Thicknesses”); data for earth surface topography (in case of water: sea level) is in the root folder: 0_Topography.dat. The folder “Bases” contains 14 data files named according to the model layers as outlined above. The folder “Thicknesses” contains 14 data files named according to the model layers as outlined above.
    Keywords: continental margin ; structural model ; Vøring Basin ; Møre Basin ; Norway
    Language: English
    Type: Dataset , Dataset
    Format: 11377451 Bytes
    Format: 1 Files
    Format: application/x-zip-compressed
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  • 9
    Publication Date: 2017-10-09
    Description: Abstract
    Description: The data files belong to a 3D structural model which covers the Glueckstadt Graben, NW Germany. The constructed 3D model is 170 km wide and 166 km long with a horizontal grid spacing of 2000 m, and a vertical resolution corresponding to the number of integrated layers. The 3D structural model includes 10 layers: (1) sea water; (2) Quaternary-Neogene; (3) Paleogene; (4) Upper Cretaceous; (5) Lower Cretaceous; (6) Jurassic; (7) uppermost part of the Middle Triassic and the Upper Triassic (Keuper); (8) Middle Triassic without uppermost and lowermost parts (Muschelkalk); (9) Lower Triassic and lowermost part of the Middle Triassic (Buntsandstein); (10) upper part of the Lower Permian and the Upper Permian (undivided Zechstein plus salt-rich Rotliegend). The thicknesses of the layers correspond to apparent thicknesses. In addition, data for earth surface topography is provided in the file: 0_Topography.dat. Model coordinates are based on the Gauss-Krueger DHDN (zone 3) system. The data format is ASCII and contains three columns (X, Y and Z), where X and Y are geographical coordinates (X = longitude, Y = latitude); Z (in m) is thickness of the layer or structural depth (base of layer) or surface elevation. The grid of each layer consists of 86 cells in W-E direction and 84 cells in S-N direction. The grid limits are the following: Xmin = 3450000 and Xmax = 3620000; Ymin = 5915100 and Ymax = 6081100. The vertical datum of the 3D model refers to the mean sea level. Organisation of data files: Data are organized in two folders (“Bases” and “Thicknesses”); data for earth surface topography (in case of water: sea level) is in the root folder ( 0_Topography.dat).The folder “Bases” contains 10 data files named according to the model layers as outlined above. The folder “Thicknesses” contains 10 data files named according to the model layers as outlined above.
    Keywords: structural model ; Glueckstadt Graben
    Language: English
    Type: Dataset , Dataset
    Format: 1362622 Bytes
    Format: 1 Files
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  • 10
    Publication Date: 2008-09-01
    Description: The structure of the Glueckstadt Graben has been investigated by use of 3D gravity backstripping technique and by 2D gravity and magnetic modelling. Subtracting the gravity effects of the Meso-Cenozoic sediments together with Permian salt reveals a positive residual anomaly within the Glueckstadt Graben. This anomaly includes two local maxima over the Westholstein and Eastholstein Troughs. The 2D gravity models point to the presence of a high-density body within the lower crust of the Glueckstadt Graben. In addition, the results of 2D magnetic modelling indicate that the central part of the high-density body is overlain by an area with high susceptibility. Most probable, the formation of this high-density body is a result of complex poly-phase tectonic history of the study area. Finally, the results of gravity modelling indicate that Permian salt is not homogeneous. 3D gravity analysis and, especially, 2D gravity modelling have distinguished the differences in degree of salt saturation in salt-rich bodies, and elucidate the proportion of Rotliegend salt. ©2007 Springer-Verlag
    Print ISSN: 1437-3254
    Electronic ISSN: 1437-3262
    Topics: Geosciences
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