A lithosphere-scale structural model of the Barents Sea and Kara Sea  region

Klitzke, Peter; Faleide, Jan Inge; Scheck‐Wenderoth, Magdalena; Sippel, Judith

doi:10.5194/se-6-153-2015

Cited by 60 publications

(44 citation statements)

References 108 publications

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“…Those events generated a complex geological setting with deep basins, platforms, highs and the associated deposition and erosion history (Gabrielsen, 1984;Doré, 1991;Ritzmann & Faleide, 2007;Faleide et al, 2008;Omosanya et al, 2015;Mattos et al, 2016). The sedimentary succession of the southeastern Barents Sea basins does not show evidence of any large extensional movements being located on the stable continental platform since the Late Palaeozoic (Faleide et al, 1993;Ebbing et al, 2007;Klitzke et al, 2015). (Etopo5 model,http://www.ngdc.noaa.gov/mgg/global/etopo5.html).…”

Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

Zięba¹,

Omosanya²,

Knies³

2017

NJG

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The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene bathymetric evolution of the southern Barents Sea using a numerical modelling approach that considers the influence of regional isostasy on relief development. The model presented in this work shows that most of the bathymetric features were initiated prior to the first documented, shelf-edge glaciations at around 1.5 Ma. During the Early Pleistocene (Calabrian), the Barents Sea shelf was close to sea level with some areas elevated to about 300 m. Most of the shelf experienced up to 200 m topography reduction during the Early to Middle Pleistocene (1.5-0.7 Ma) facilitating bifurcation of the North Atlantic waters into the Barents Sea. Later during the Middle Pleistocene-Present (0.7-0.0 Ma) the relief deepened by 0 to 250 m. Our results demonstrate that the present-day topography of the southern Barents Sea is the consequence of glacial activity influenced by a regional isostatic component, which is the result of selective trough erosion and significant sediment deposition at the Barents Sea margins during the Pleistocene.

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Section: Cenozoic Evolution Of the Southern Barents Seamentioning

confidence: 99%

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

Zięba¹,

Omosanya²,

Knies³

2017

NJG

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“…Detrital zircon dating from northern Taymir and a Cambro‐Ordovician unconformity on Severnaya Zemlya (east of Franz‐Josef Land) imply that the Timanides extended northward across the entire eastern Barents Sea as far as to the northern Kara Sea (Gee et al, , ; Pease, ). This is supported by similar magnetic intensity patterns in the Pechora Basin and in the northern Kara Sea (Gee et al, ), which are likely obscured in the eastern Barents Sea by sediment thicknesses of up to 20 km (Faleide et al, ; Ivanova et al, ; Klitzke et al, , ).…”

Section: Geological Settingmentioning

confidence: 64%

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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“…The structures of the north-western margin of the Siberian craton have attracted the attention of geologists for over a hundred years [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and many others. The earliest and most essential questions on the study area are: (a) How did the Taimyr-Severnaya Zemlya folded area form-a key structure of the Artic, and is it a part of the Siberian craton; (b) what are the sequence and stages of its formation, how is the formation of this folded area related to the formation of the Yenisei-Khatanga basin; (c) what serves as the basement for the latter.…”

Section: Introductionmentioning

confidence: 99%

Geodynamics and Oil and Gas Potential of the Yenisei-Khatanga Basin (Polar Siberia)

et al. 2018

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The geodynamic development of the north–western (Arctic) margin of the Siberian craton is comprehensively analyzed for the first time based on our database as well as on the analysis of published material, from Precambrian-Paleozoic and Mesozoic folded structures to the formation of the Mesozoic-Cenozoic Yenisei-Khatanga sedimentary basin. We identify the main stages of the region’s tectonic evolution related to collision and accretion processes, mainly subduction and rifting. It is demonstrated that the prototype of the Yenisei-Khatanga basin was a wide late Paleozoic foreland basin that extended from Southern Taimyr to the Tunguska syneclise and deepened towards Taimyr. The formation of the Yenisei-Khatanga basin, as well as of the West-Siberian basin, was due to continental rifting in the Permian-Triassic. The study describes the main oil and gas generating deposits of the basin, which are mainly Jurassic and Lower Cretaceous mudstones. It is shown that the Lower Cretaceous deposits contain 90% of known hydrocarbon reserves. These are mostly stacked reservoirs with gas, gas condensate and condensate with rims. The study also presents data on oil and gas reservoirs, plays and seals in the Triassic, Jurassic and Cretaceous complexes.

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A lithosphere-scale structural model of the Barents Sea and Kara Sea region

Cited by 60 publications

References 108 publications

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry

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

Geodynamics and Oil and Gas Potential of the Yenisei-Khatanga Basin (Polar Siberia)

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