A.V. Soloviev, P.O. Sobolev, O.V. Grushevskaya, E.A. Vasil’eva, D.V. Levochskaya, A.I. Khisamutdinova, I.N. Prokof’ev, S.V. Shimanskii, M.A. Belova, J.K. Hourigan
Evolution of provenance areas and petroleum potential of Barents Sea Mesozoic deposits: dating of clastic zircon from Fersmanovskaya-1 well and paleogeography reconstructions
Ключевые слова: the Barents Sea; Mesozoic sedimentary cover; petroleum potential; clastic zircon; U/Pb LA ICP-MS dating; provenance; paleogeography reconstruction.
For citation: Soloviev A.V., Sobolev P.O., Grushevskaya O.V., Vasil’eva E.A., Levochskaya D.V., Khisamutdinova A.I., Prokof’ev I.N., Shimanskii S.V., Belova M.A., Hourigan J.K. Evolution of provenance areas and petroleum potential of Barents Sea Mesozoic deposits: dating of clastic zircon from Fersmanovskaya-1 well and paleogeography reconstructions. Geologiya nefti i gaza. 2023;(3):105–124. DOI: 10.41748/0016-7894-2023-3-105-124. In Russ.
Funding: The research was carried out at the expense of the Russian Science Foundation, project 22-27-00440. Part of the research was carried out within the framework of the multi-client project “Basin analysis and petroleum system modeling of the Russian Barents Sea Basin” (2011-2014, VSEGEI with the support of the Norwegian Petroleum Directorate (Oljedirektoratet) and Statoil AS, Concedo AS; Detnorskeoljeselskap AS, Total E&P Russie, Wintershall Holding GmbH and Lukoil Overseas North Shelf AS). Samples were collected by A.E. Goldyrev, I.V. Osadchiy and Ya.A. Osadchaya.
Acknowledgments: The authors thank their colleague E.V. Sopov (AMNGR, Murmansk) for his assistance in arranging the core studies, an also to employees of AO SMNG (AO Rosgeologiya) who participated in 2022 in integration of geophysical data over the Russian shelf of the Barents Sea: E.P. Petrushina, O.N. Kot, I.V. Aksenov, A.R. Yusupov, G.G. Kryukova and others.
The authors present the results of integrated geological and geophysical data and petroleum potential analysis of the Barents Sea region, as well as the new data of U/Pb (LA ICP-MS) dating and morphological studies of clastic zircon on four Triassic and Jurassic sandstone samples taken from the Fersmanovskaya-1 well (the Barents Sea). These works allowed describing provenance of clastic material for Triassic and Jurassic deposits and update the regional paleogeography reconstructions. In the Middle Triassic, terrigenous material was mainly transported from south – south-east — from the Hercynian structures of Polar Urals and Novaya Zemlya (370–220 Ma), Neoproterozoic sequences of the Timansky orogen, and from the Urals Palaeozoic series composed, among others, of the products of Protourals-Timansky orogen scouring (580–525 Ma). In the Late Triassic, the Urals sources remain prevailing, influence of Neoproterozoic zircon decreases sharply, and role of Caledonian zircons in the amount of sedimentary material increases (450–400 Ma). In Early Jurassic, a new source of the Paleoproterozoic zircon (1.95–1.8 Ma) appears in the scouring areas. There were no considerable changes in Middle Jurassic. Therefore, Jurassic transportation of clastic material to the Barents Sea region could take place from south to north and/or from south-east to north-west.