Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 47110 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Cenozoic sedimentary structure and neotectonics of \newline the Barents--Kara shelf from reflection profiling data Cenozoic sedimentary structure and neotectonics of \newline the Barents--Kara shelf from reflection profiling data Musatov E E Musatov E E All-Russian institute of world ocean geology, Sankt-Peterburg ru All-Russian institute of world ocean geology, Sankt-Peterburg ru 1 2 151 177 11 11 2021 https://rjes.ru/en/nauka/article/47110/view

The Cenozoic sediments of the Barents-Kara shelf were investigated by running thousands of kilometers of continuous reflection profiles CRP and one-channel zero-offset ray reflection surveys. The seismic data were verified by drilling engineering-geological holes and stratigraphic wells on the shelf and islands; impact cores as long as 5-7m were recovered for this purpose from the bottom sediments. Five structural units were identified in the Upper Cenozoic sediments: a Paleocene-Eocene marine, an Oligocene-Miocene limnoalluvial, Pliocene-Pleistocene marine, glaciomarine, and glacial units, and a late Pleistocene-Holocene marine unit. These units correlate with four periods in the paleogeographic history of the continental margin: transgression 1-2, regression 3 -N1, regression-transgression N2- Q III, and transgression Q III-IV. Neotectonic criteria of the shelf oil and gas potential were established, which must have been favorable for the preservation and reconfiguration of hydrocarbon pools and for the growth of structures' reliefs.

The Cenozoic sediments of the Barents-Kara shelf were investigated by running thousands of kilometers of continuous reflection profiles CRP and one-channel zero-offset ray reflection surveys. The seismic data were verified by drilling engineering-geological holes and stratigraphic wells on the shelf and islands; impact cores as long as 5-7m were recovered for this purpose from the bottom sediments. Five structural units were identified in the Upper Cenozoic sediments: a Paleocene-Eocene marine, an Oligocene-Miocene limnoalluvial, Pliocene-Pleistocene marine, glaciomarine, and glacial units, and a late Pleistocene-Holocene marine unit. These units correlate with four periods in the paleogeographic history of the continental margin: transgression 1-2, regression 3 -N1, regression-transgression N2- Q III, and transgression Q III-IV. Neotectonic criteria of the shelf oil and gas potential were established, which must have been favorable for the preservation and reconfiguration of hydrocarbon pools and for the growth of structures' reliefs.

 Cenozoic sediments Barents--Kara shelf reflection profiling data. Cenozoic sediments Barents--Kara shelf reflection profiling data.

Aksenov, Eurasian Arctic Shelf in Late Quaternary Time, 1988. Aksenov, Eurasian Arctic Shelf in Late Quaternary Time, 1988. Antonsen, Amer. Ass. Petrol. Geol. Bull., v. 75, no. 7, 1991. Antonsen, Amer. Ass. Petrol. Geol. Bull., v. 75, no. 7, 1991. Armishev, Geology of Seas and Oceans, Papers of Soviet Geologists, 28th International Geological Congress, 1988. Armishev, Geology of Seas and Oceans, Papers of Soviet Geologists, 28th International Geological Congress, 1988. Avetisov, Zones of Seismic Activity in the Arctic Region, 1996. Avetisov, Zones of Seismic Activity in the Arctic Region, 1996. Gramberg, Barents Shelf Platform, 1988. Gramberg, Barents Shelf Platform, 1988. Baturin, Dokl. Akad. Nauk SSSR, v. 299, no. 2, 1988. Baturin, Dokl. Akad. Nauk SSSR, v. 299, no. 2, 1988. Cherkis, Bathymetry of the Barents and Kara Seas, 1991. Cherkis, Bathymetry of the Barents and Kara Seas, 1991. Chochia, Late Cenozoic Paleogeography of East Europe and West Siberia, 1993. Chochia, Late Cenozoic Paleogeography of East Europe and West Siberia, 1993. Danilov, Arctic Lithogenesis, 1978. Danilov, Arctic Lithogenesis, 1978. Druzhinina, Geol. Zhurn. Akad. Nauk Ukrainy, no. 9, 1992. Druzhinina, Geol. Zhurn. Akad. Nauk Ukrainy, no. 9, 1992. Dunaev, Modern Sedimentation on World Ocean Shelves, 1990. Dunaev, Modern Sedimentation on World Ocean Shelves, 1990. Eldholm, Geology, no. 15, 1987. Eldholm, Geology, no. 15, 1987. Elverhoi, Shallow Bedrock Geology and Geophysics of the Barents Sea, vol. 37, 1987. Elverhoi, Shallow Bedrock Geology and Geophysics of the Barents Sea, vol. 37, 1987. Elverhoi, Berdrock Geology of the Northern Barents Sea West of 35 degrees as Inferred from Overlying Quaternary Deposits, vol. 180, 1984. Elverhoi, Berdrock Geology of the Northern Barents Sea West of 35 degrees as Inferred from Overlying Quaternary Deposits, vol. 180, 1984. Elverhoi, The Physical Environment of the Western Barents Sea, 1: 500 000, Shallow Bedrock Geology, Structure, Litho- and Biostratigraphy, vol. 179D, 1988. Elverhoi, The Physical Environment of the Western Barents Sea, 1: 500 000, Shallow Bedrock Geology, Structure, Litho- and Biostratigraphy, vol. 179D, 1988. Geology..., Geology of the USSR and the Distribution of Mineral Resources, Russian Arctic Seas, vol. 9, Eds. I. S. Gramberg and Yu. E. Pogrebitskii, 1984. Geology..., Geology of the USSR and the Distribution of Mineral Resources, Russian Arctic Seas, vol. 9, Eds. I. S. Gramberg and Yu. E. Pogrebitskii, 1984. Gramberg, Sov. Geol., no. 1, 1985. Gramberg, Sov. Geol., no. 1, 1985. Gritsenko, Recent Deposits and Paleogeography of Arctic Seas, 1989. Gritsenko, Recent Deposits and Paleogeography of Arctic Seas, 1989. Grosvald, Continental Shelf Ice Sheets, 1983. Grosvald, Continental Shelf Ice Sheets, 1983. Gurevich, Problems of the Cenozoic Paleoecology and Paleogeoraphy of Arctic Seas, 1992. Gurevich, Problems of the Cenozoic Paleoecology and Paleogeoraphy of Arctic Seas, 1992. Gustavsen, Amer. Ass. Petrol. Geol. Bull., v. 81, no. 11, 1997. Gustavsen, Amer. Ass. Petrol. Geol. Bull., v. 81, no. 11, 1997. Josehans, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Josehans, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Knitsen, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Knitsen, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Krapivner, Rootless Neotectonic Structures, 1986. Krapivner, Rootless Neotectonic Structures, 1986. Kristoffersen, Unconsolidated Sediments and Shallow Structure of the Northern Barents Sea, vol. 180, 1984. Kristoffersen, Unconsolidated Sediments and Shallow Structure of the Northern Barents Sea, vol. 180, 1984. Lopatin, Sov. Geol., no. 6, 1992. Lopatin, Sov. Geol., no. 6, 1992. Map..., Map of Neotectonics of North Eurasia, 1:5 000 000, 12 sheets and Explanatory Notes, Chief Editor A. F. Grachev, 1998. Map..., Map of Neotectonics of North Eurasia, 1:5 000 000, 12 sheets and Explanatory Notes, Chief Editor A. F. Grachev, 1998. Matishov, Evolution Approach to the Study of Arctic Marine Ecosystems with Reference to the Barents Sea, 1988. Matishov, Evolution Approach to the Study of Arctic Marine Ecosystems with Reference to the Barents Sea, 1988. Matishov, Bathymetric Map of the Franz-Josef Land Area, Sheet 1, 1995. Matishov, Bathymetric Map of the Franz-Josef Land Area, Sheet 1, 1995. Musatov, Okeanologiya, v. 36, no. 3, 1996. Musatov, Okeanologiya, v. 36, no. 3, 1996. Musatov, Fizika Zemli, no. 12, 1996. Musatov, Fizika Zemli, no. 12, 1996. Musatov, Geomorfologiya, no. 1, 1997. Musatov, Geomorfologiya, no. 1, 1997. Musatov, Izv. VUZov. Geologiya i Razvedka, no. 3, 1997. Musatov, Izv. VUZov. Geologiya i Razvedka, no. 3, 1997. Musatov, Byul. MOIP. Otd. Geol., v. 67, 1992. Musatov, Byul. MOIP. Otd. Geol., v. 67, 1992. Onishchenko, Quaternary Paleoecology and Paleogeography of the Arctic Seas, 1988. Onishchenko, Quaternary Paleoecology and Paleogeography of the Arctic Seas, 1988. Pavlidis, World Ocean Shelf in Late Quaternary Time, 1992. Pavlidis, World Ocean Shelf in Late Quaternary Time, 1992. Pogrebitskii, Reg. Geol. i Metallogeniya, no. 7, 1997. Pogrebitskii, Reg. Geol. i Metallogeniya, no. 7, 1997. Samoilovich, Quaternary Deposits of the Barents Sea, 1993. Samoilovich, Quaternary Deposits of the Barents Sea, 1993. Senin, Tectonics of the Arctic Ocean--Continent Transition Zone, 1989. Senin, Tectonics of the Arctic Ocean--Continent Transition Zone, 1989. Shipelkevich, Atlas of East Barents Shelf Geology, 1994. Shipelkevich, Atlas of East Barents Shelf Geology, 1994. Skagen, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Skagen, Arctic Geology and Petroleum Potential, Eds. T. O. Vorren, et al., 1993. Solheim, Sediments above the Upper Regional Unconformity: Thickness, Seismic Stratigraphy and Outline of Glacial History, vol. 179D, 1984. Solheim, Sediments above the Upper Regional Unconformity: Thickness, Seismic Stratigraphy and Outline of Glacial History, vol. 179D, 1984. Solheim, Glaciomarine Environments: Processes and Sediments, Eds. J. A. Dowdeswell and J. D. Scource, Geol Soc. London Spec. Publ., v. 53, 1990. Solheim, Glaciomarine Environments: Processes and Sediments, Eds. J. A. Dowdeswell and J. D. Scource, Geol Soc. London Spec. Publ., v. 53, 1990. Spiridonov, Sov. Geologiya, no. 4, 1980. Spiridonov, Sov. Geologiya, no. 4, 1980. The Geology..., The Geology of Franz-Josef Land and the Northernmost Barents Sea, Co-eds. A. Solheim, E. Musatov, and N. Heintz, 1998. The Geology..., The Geology of Franz-Josef Land and the Northernmost Barents Sea, Co-eds. A. Solheim, E. Musatov, and N. Heintz, 1998. Ustritskii, Geotektonika, no. 1, 1990. Ustritskii, Geotektonika, no. 1, 1990. Verba, Geological and Geophysical Investigations in the World Ocean, 1987. Verba, Geological and Geophysical Investigations in the World Ocean, 1987. Vorren, Paleogeography, v. 3, no. 5, 1988. Vorren, Paleogeography, v. 3, no. 5, 1988. Yakhimovich, Neogene Stratigraphy of the Timan--Ural Region, 1990. Yakhimovich, Neogene Stratigraphy of the Timan--Ural Region, 1990. Zarkhidze, Predictive Evaluation of Mineral Resources in the Nearsurface Formations of West Siberia and the Urals, 1989. Zarkhidze, Predictive Evaluation of Mineral Resources in the Nearsurface Formations of West Siberia and the Urals, 1989. Zarkhidze, Paleogeographic Atlas of the Shelf Regions of Eurasia for the Mesozoic and Cenozoic, vol. 2, Eds. M. N. Alekseev, I. S. Gramberg, and Yu. M. Pushcharovsky, 1991. Zarkhidze, Paleogeographic Atlas of the Shelf Regions of Eurasia for the Mesozoic and Cenozoic, vol. 2, Eds. M. N. Alekseev, I. S. Gramberg, and Yu. M. Pushcharovsky, 1991. Zarkhidze, Circumpolar Map of Quaternary Deposits of the Arctic, Map 1818A, Sheet 1, 1991. Zarkhidze, Circumpolar Map of Quaternary Deposits of the Arctic, Map 1818A, Sheet 1, 1991.