Middle to Late Devonian–Carboniferous collapse basins on the Finnmark Platform and in the southwesternmost Nordkapp basin, SW Barents Sea

Koehl, Jean-Baptiste P.; Bergh, Steffen G.; Henningsen, Tormod; Faleide, Jan Inge

doi:10.5194/se-9-341-2018

Cited by 34 publications

(92 citation statements)

References 74 publications

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“…The granitic basement beneath the Utsira High likely does not extend to great depths within the crust as it may be limited by the deeper Utsira Shear Zone (Figures b, c, and ). It may be the case the that the Utsira High is uplifted and exhumed within the footwall of the Utsira Shear Zone in this area, similar to as observed in core complexes in the North Sea and Barents Sea (Henstra & Rotevatn, ; Koehl et al, ; Steltenpohl et al, ). In addition, strain may localize along the Utsira Shear Zone during rift activity rather than across the high itself.…”

Section: Discussionsupporting

confidence: 74%

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

et al. 2019

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The northern North Sea rift evolved through multiple rift phases within a highly heterogeneous crystalline basement. The geometry and evolution of syn-rift depocenters during this multiphase evolution and the mechanisms and extent to which they were influenced by preexisting structural heterogeneities remain elusive, particularly at the regional scale. Using an extensive database of borehole-constrained 2D seismic reflection data, we examine how the physiography of the northern North Sea rift evolved throughout late Permian-Early Triassic (RP1) and Late Jurassic-Early Cretaceous (RP2) rift phases, and assess the influence of basement structures related to the Caledonian orogeny and subsequent Devonian extension. During RP1, the location of major depocenters, the Stord and East Shetland basins, was controlled by favorably oriented Devonian shear zones. RP2 shows a diminished influence from structural heterogeneities, activity localizes along the Viking-Sogn graben system and the East Shetland Basin, with negligible activity in the Stord Basin and Horda Platform. The Utsira High and the Devonian Lomre Shear Zone form the eastern barrier to rift activity during RP2. Toward the end of RP2, rift activity migrated northward as extension related to opening of the proto-North Atlantic becomes the dominant regional stress as rift activity in the northern North Sea decreases. Through documenting the evolving syn-rift depocenters of the northern North Sea rift, we show how structural heterogeneities and prior rift phases influence regional rift physiography and kinematics, controlling the segmentation of depocenters, as well as the locations, styles, and magnitude of fault activity and reactivation during subsequent events.

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Section: Discussionsupporting

confidence: 74%

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

et al. 2019

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“…Two prominent reflection bands in our seismic data are distinctively similar to deep reflections in several seismic surveys across wide parts of the Norwegian Barents Sea (Figures ; Anell et al, , ; Blaich et al, ; Breivik et al, ; Faleide et al, ; Gudlaugsson et al, ; Koehl et al, ; NPD, ). During the end of the Permian, widely deposited and strongly cemented spiculitic shales became rapidly draped by shales and sandstones.…”

Section: Discussionsupporting

confidence: 81%

“…A W‐E oriented local magnetic maximum links the top of the two most prominent anticlines on BGR2015–106 and BGR2015–105 and lines up with the axis of the Olga Basin (white stippled line in Figure b). Similar parallel reflections in the deeper crust are typically found in orogenic settings (Franke et al, ; Koehl et al, ) and indicate that the Olga Basin may have evolved above old W‐E striking collisional fabrics.…”

Section: Basin Structure and Architecturesupporting

confidence: 74%

“…During the end of the Permian, widely deposited and strongly cemented spiculitic shales became rapidly draped by shales and sandstones. The drastic lithological change results in a major impedance contrast, marking the end of the Permian in the Barents Sea (Anell et al, , ; Glørstad‐Clark et al, ; Gudlaugsson et al, ; Koehl et al, ). Thus, we assign a near‐top Permian age to the upper Paleozoic reflection.…”

Section: Discussionmentioning

confidence: 99%

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The Paleozoic Evolution of the Olga Basin Region, Northern Barents Sea: A Link to the Timanian Orogeny

Klitzke

Franke

Ehrhardt

et al. 2019

Geochem Geophys Geosyst

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The evolution of the Olga Basin region in the northern Norwegian Barents Sea and its relation to the Caledonian and Timanian orogenies is poorly understood due to sparse geophysical data and the lack of well control. In 2015, the German Federal Institute for Geosciences and Natural Resources (BGR) acquired deep multichannel seismic lines as well as gravity and magnetic data. The new seismic data reveal that the Olga and Sørkapp Basins evolved as a W-E striking half-graben system along a major normal fault in the north and a smaller normal fault in the south, respectively. Deep crustal undulating high-amplitude reflections below the Olga and Sørkapp Basins coincide with W-E striking local magnetic maxima and may imply that the basins evolved on top of old collisional fabrics. The absence of major compressional deformation implies a post-Caledonian onset of subsidence. The W-E structural configuration of the sedimentary basins is difficult to reconcile with an earlier proposed NE striking Caledonian branch in the northern Barents Sea. Instead, the orientation of the Olga and Sørkapp Basins lines up with Timanian structural trends from the Pechora Basin. We propose that the Olga and Sørkapp Basins experienced transtensional deformation during the late Devonian/early Carboniferous NE-SW regional extension phase whereby inherited Timanian lineaments controlled the final W-E basin configuration. A salient pre-Caledonian Olga-Sørkapp crustal block in the central Barents Sea would also explain the recently proposed NNW rotation of Caledonian nappes and thrust sheets in the southwestern Barents Sea.

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“…Extensional collapse in the Barents Sea Caledonides and extensional reactivation have been inferred from magnetic data analysis in the southwestern Barents Sea (Gernigon and Brönner, 2012), from seismic (OBS and streamer) and potential field data in the northwestern Barents Sea Breivik et al, 2002Breivik et al, , 2005 and based in field work on Bjørnøya . Recent accounts on late/post-Caledonian extension of northern Norway and north Svalbard offers a broader basis for discussions on basement configurations (Braathen et al, 2018;Davids et al, 2018;Koehl et al, 2018). An east-dipping detachment in the Fingerdjupet Subbasin was described by .…”

Section: Fingerdjupet Subbasin Southwestern Barents Seamentioning

confidence: 99%

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

Serck

Faleide

Braathen

et al. 2017

Marine and Petroleum Geology

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This PhD thesis addresses how fault and fold growth affect accommodation development and sediment routing and fill in extensional basins. Extensional basins are key constituents of passive continental passive and intra-continental rift systems and hold great potential accumulation of reservoir-grade successions of sediments. These types of basins differ widely in terms of e.g. fault and fold properties, duration of faulting, accommodation development, tectono-climatic setting and lithology of basin substrate and fill. Accordingly, constructing general models for extensional basin evolution is challenging. Combining different types of datasets that offer different observation scale and resolution can mitigate this. This thesis presents seismic case studies from the Fingerdjupet Subbasin, southwestern Barents Sea and outcrop studies from the Bandar Jissah Basin, northeastern Oman. Seismic analyses include interpretations of faults and horizons bounding seismic reflector packages; age control was achieved

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Middle to Late Devonian–Carboniferous collapse basins on the Finnmark Platform and in the southwesternmost Nordkapp basin, SW Barents Sea

Cited by 34 publications

References 74 publications

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

The Paleozoic Evolution of the Olga Basin Region, Northern Barents Sea: A Link to the Timanian Orogeny

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

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