Early Cretaceous evolution of the Tromsø Basin, SW Barents Sea, Norway

Kairanov, Bereke; Escalona, Alejandro; Norton, Ian O.; Abrahamson, Peter

doi:10.1016/j.marpetgeo.2020.104714

Cited by 11 publications

(8 citation statements)

References 84 publications

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“…With its exceptional low crustal thickness of less than 10 km, visible on seismic profile F (Figs. 9F & 10F; Breivik et al, 1999;Faleide et al, 2008), and the interpreted oblique rifting by Kairanov et al (2021), mafic intrusions may have developed in crustal weakness zones along the axis of the basin. However, these hypotheses require further maturation, and an integrated seismic, gravity and magnetic interpretation could be a possible way forward.…”

Section: Western Bjørnøya Basin Sørvestsnaget Basin Harstad Basin And...mentioning

confidence: 99%

Petrology of the crystalline crust in the southwestern Barents Sea inferred from geophysical data

Fichler¹,

Pastore²

2022

NJG

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We present a new petrological model of the crystalline crust in the southwestern Barents Sea derived in a comprehensive workflow that focuses on the interpretation of gravity, magnetic and seismic data and that incorporates geology and petrophysics. The workflow started with the careful construction of a 3D density model of sediments, crystalline crust and upper mantle. The sedimentary model was built from published information including well logs, net erosion and salt occurrences. Existing maps of top crystalline basement and Moho depths were improved by means of deep seismic profiles. Mantle densities were derived from values of analogous geological settings. Subsequently, modelling and inversion of gravity and magnetic data resulted in densities and magnetic susceptibilities of the crystalline crust. These parameters were interpreted by comparison with published ranges of crustal rock parameters.The latter were linked to a two-dimensional colour scale dedicated to combine the mapped crustal densities and magnetic susceptibilities into a single map, a novel "crustal petrophysical attribute" map that assisted in the classification of the rock types. The eastern Bjørnøya Basin, Veslemøy High and Senja Ridge were interpreted as consisting of mafic-ultramafic crustal rocks. There is evidence for serpentinisation at the eastern Veslemøy High. It is argued that intrusions on the Veslemøy High have the same magmatic origin as the Seiland Igneous Province. The Loppa High area was interpreted to consist of upper crustal felsicintermediate rocks of Precambrian age intruded by chains of Carboniferous intermediate-mafic intrusions. The surrounding basins and Finnmark Platform were interpreted as largely felsic-mafic metamorphic and metasedimentary rocks. A gradual change in polarity of magnetic anomalies from the Harstad Basin through the Sørvestsnaget Basin was explained by a change in direction of magnetic remanence of sills, dykes and basalts.

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Section: Western Bjørnøya Basin Sørvestsnaget Basin Harstad Basin And...mentioning

confidence: 99%

Petrology of the crystalline crust in the southwestern Barents Sea inferred from geophysical data

Fichler¹,

Pastore²

2022

NJG

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“…Tectonic settings in the GBSB varied from east to west. In the Jurassic–Cretaceous, the westernmost Western Barents Sea was part of a single block with Greenland, Lofoten‐Vesterålen and mid‐Norwegian Margin and was influenced by the opening of the Atlantic and multiple rifting episodes throughout Late Jurassic–Cretaceous (Doré et al., 1999; Faleide et al., 1993, 2015; Kairanov et al., 2021). The Eastern Barents Sea remained more tectonically calm; the inversion and uplift of the Novaya Zemlya resulted in the formation of clastic wedges, but there was no intense fault tectonics and rifting.…”

Section: Discussionmentioning

confidence: 99%

“…The aims of this study are threefold: (i) establish a sequence stratigraphic model for the Late Jurassic–Early Cretaceous in Eastern Barents Sea Basin, (ii) reconstruct the palaeoenvironments for each sequence time interval and (iii) understand the distribution of the clastic reservoirs within the study interval. Investigations are conducted in the framework of the circum Arctic LoCra project (Grundvåg et al., 2019; Grundvåg & Olaussen, 2017; Kairanov et al., 2018, 2021; Marín et al., 2017, 2018).…”

Section: Introductionmentioning

confidence: 99%

Sequence stratigraphy and palaeogeography of the Upper Jurassic and Lower Cretaceous in the Eastern Barents Sea

Mordasova,

Stoupakova,

Suslova

et al. 2024

Basin Research

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The Upper Jurassic–Lower Cretaceous sedimentary rocks in the Eastern Barents Sea Basin are up to 2 km thick and represent one of the least studied Arctic intervals. Here, for the first time, we present a detailed analysis of 43,000 km of 2D seismic profiles, as well as well‐log and core data from 24 offshore wells with the aim to create a comprehensive sequence stratigraphic framework that can be integrated with the rest of the basin. Results show that (1) seven third‐order sequences and five types of clinoforms can be identified based on integrated seismic and well data. The age of each sequence was established based on published biostratigraphic investigations along with new dinocyst interpretations included in this study; (2) the deep marine basin was gradually filled with sediments coming from north, east and south as a response to HALIP, Canada Basin opening and Cimmerian uplift of Novaya Zemlya, and was preserved only in the south‐western part of the Barents Sea Basin at the end of Early Cretaceous and (3) both Eastern Barents Sea and West Siberia Basin share similarities in sedimentary environments and tectonic setting, though the spatial distribution of clastic reservoirs in Upper Jurassic and Lower Cretaceous mega‐sequence heavily depends on the source areas that require more provenance focused research. The results presented here can be used in further regional exploration in the area and to better understand the geodynamic evolution of the Greater Barents Sea Basin.

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“…1). Due to the opening of the Canadian basin and the oblique rifting of the northern Atlantic, local compressional and transpressional events are suggested along the margin (Kairanov et al 2021).…”

Section: Archeanmentioning

confidence: 99%

Finnmark Platform Composite Tectono-Sedimentary Element, Barents Sea

Henriksen

Ktenas

Nielsen³

2021

Memoirs

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The Finnmark Platform Composite Tectono-Sedimentary Element (CTSE), located in the southern Barents Sea, is a northward-dipping monoclinal structural unit. It covers most of the southern Norwegian Barents Sea where it borders the Norwegian Mainland. Except for the different age of basement, the CTSE extends eastwards into the Kola Monocline on the Russian part of the Barents Sea.The general water depth varies between 200-350 m, and the sea bottom is influenced by Plio-Pleistocene glaciations. A high frequency of scour marks and deposition of moraine materials exists on the platform areas. Successively older strata sub-crop below the Upper Regional Unconformity (URU, which was) formed by several glacial periods.Basement rocks of Neoproterozoic age are heavily affected by the Caledonian Orogeny, and previously by the Timanide tectonic compression in the easternmost part of the Finnmark Platform CTSE.Depth to crystalline basement varies considerably and is estimated to be from 4-5 to 10 km. Following the Caledonian orogenesis, the Finnmark Platform was affected by Lower to Middle Carboniferous rifting, sediment input from the Uralian Orogen in the east, the Upper Jurassic / Lower Cretaceous rift phase and the Late Plio-Pleistocene isostatic uplift.A total of 8 exploration wells drilled different targets on the platform. Two minor discoveries have been made proving presence of both oil and gas and potential sandstone reservoirs of good quality identified in the Visean, Induan, Anisian and Carnian intervals. In addition, thick sequences of Perm-Carboniferous carbonates and spiculitic chert are proven in the eastern Platform area. The deep reservoirs are believed to be charged from Paleozoic sources. A western extension of the Domanik source rocks well documented in the Timan-Pechora Basin may exist towards the eastern part of the Finnmark Platform. In the westernmost part, charge from juxtaposed down-faulted basins may be possible.

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Early Cretaceous evolution of the Tromsø Basin, SW Barents Sea, Norway

Cited by 11 publications

References 84 publications

Petrology of the crystalline crust in the southwestern Barents Sea inferred from geophysical data

Petrology of the crystalline crust in the southwestern Barents Sea inferred from geophysical data

Sequence stratigraphy and palaeogeography of the Upper Jurassic and Lower Cretaceous in the Eastern Barents Sea

Finnmark Platform Composite Tectono-Sedimentary Element, Barents Sea

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