Upper Jurassic to Lower Cretaceous source rocks in the Norwegian Barents Sea, part I: Organic geochemical, petrographic, and paleogeographic investigations

Cedeño, Andrés; Ohm, Sverre; Escalona, Alejandro; Marín, Dora; Olaussen, Snorre; Demchuk, Thomas D.

doi:10.1016/j.marpetgeo.2021.105342

Cited by 2 publications

(1 citation statement)

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“…In addition, the adjacent West Siberia basin contains the world's largest oilfields in the Lower Cretaceous deposits and shares a similar sedimentary infill history during this period, shaped by major geological events such as opening of the Arctic Ocean and the formation of the Verkhoyansk Fold Belt (Nikishin et al., 2019; Sømme et al., 2018). The well‐known Bazhenov Fm source rock (Tithonian–Berriasian) in the West Siberia Basin and black shales of the Hekkingen Fm (Upper Oxfordian–Tithonian) in the south‐western Barents Sea (Cedeño et al., 2021; Kiryukhina & Kiryukhina, 2013; Ohm et al., 2008) serve as lithostratigraphic analogues for the Upper Jurassic black shales in the Eastern Barents Sea. These shales are overlaid by clinothemes hundreds of meters thick and share comparable lithological and sedimentological features.…”

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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