PROFESSIONAL PAPERS
Drachev, S.S., Mazur, S., Campbell, S., Green, Ch., Tishchenko, A. 2018. Crustal architecture of the East Siberian Arctic Shelf and adjacent Arctic Ocean constrained by seismic data and gravity modeling result. Journal of Geodynamics, https://doi.org/10.1016/j.jog.2018.03.005
Drachev, S.S., Mazur, S., Campbell, S., Green, C., Shkarubo, S.I., Tishchenko, A., 2017. Crustal architecture of the Laptev Rift System in the East Siberian Arctic based on 2D long-offset seismic profiles and gravity modeling. Petrol. Geosci. http://dx.doi.org/10.1144/petgeo2016-143
Drachev, S.S., Shkarubo, S.I., 2017. Tectonics of the Laptev Shelf, Siberian Arctic. In: Pease, V., Coakley, B. (Eds.), Circum-Arctic Lithosphere Evolution., vol. 460. Geol. Soc. Lond. Spec. Publ., pp. 263–284. http://dx.doi.org/10.1144/SP460.15
Drachev, S.S., 2016. Fold belts and sedimentary basins of the Eurasian Arctic. Arktos 2, 21. http://dx.doi.org/10.1007/s41063-015-0014-8
Pease, V., Drachev, S., Stephenson, R., Zhang, X., 2014. Arctic lithosphere — A review. Tectonophysics 628, 1–25. http://dx.doi.org/10.1016/j.tecto.2014.05.033
Drachev, S.S., 2011. Tectonic setting, structure and petroleum geology of the Siberian Arctic offshore sedimentary basins. In: Spencer, A.M., Embry, A.F., Gautier, D.L., Stoupakova, A.V., Sorensen, K. (Eds.), Arctic Petroleum Geology, Geol. Soc. Lond. Mem., vol. 35 The Geological Society, Bath. http://dx.doi.org/10.1144/M35.25
Grantz, A., Scott, R.A., Drachev, S.S., Moore, T.E., Valin, Z.C., 2011b. Sedimentary successions of the Arctic Region (58–64° to 90°N) that may be prospective for hydrocarbons. In: Spencer, A.M., Embry, A.F., Gautier, D.L., Stoupakova, A.V., Sorensen, K. (Eds.), Arctic Petroleum Geology, Geol. Soc. Lond. Mem., vol. 35 The Geological Society, Bath. http://dx.doi.org/10.1144/M35.2
Drachev, S.S., Malyshev, N.A., Nikishin, A.M., 2010. Tectonic history and petroleum geology of the Russian Arctic Shelves: an overview. Vining, B.A., Pickering, S.C. (Eds.), Petroleum Geology: From Mature Basins to New Frontiers −Proceedings of the 7th Petroleum Geology Conference. Geol. Soc. Lond, vol. 7, 591–619. http://dx.doi.org/10.1144/0070591
Drachev, S.S., Mazur, S., Campbell, S., Green, C., Shkarubo, S.I., Tishchenko, A., 2017. Crustal architecture of the Laptev Rift System in the East Siberian Arctic based on 2D long-offset seismic profiles and gravity modeling. Petrol. Geosci. http://dx.doi.org/10.1144/petgeo2016-143
Drachev, S.S., Shkarubo, S.I., 2017. Tectonics of the Laptev Shelf, Siberian Arctic. In: Pease, V., Coakley, B. (Eds.), Circum-Arctic Lithosphere Evolution., vol. 460. Geol. Soc. Lond. Spec. Publ., pp. 263–284. http://dx.doi.org/10.1144/SP460.15
Drachev, S.S., 2016. Fold belts and sedimentary basins of the Eurasian Arctic. Arktos 2, 21. http://dx.doi.org/10.1007/s41063-015-0014-8
Pease, V., Drachev, S., Stephenson, R., Zhang, X., 2014. Arctic lithosphere — A review. Tectonophysics 628, 1–25. http://dx.doi.org/10.1016/j.tecto.2014.05.033
Drachev, S.S., 2011. Tectonic setting, structure and petroleum geology of the Siberian Arctic offshore sedimentary basins. In: Spencer, A.M., Embry, A.F., Gautier, D.L., Stoupakova, A.V., Sorensen, K. (Eds.), Arctic Petroleum Geology, Geol. Soc. Lond. Mem., vol. 35 The Geological Society, Bath. http://dx.doi.org/10.1144/M35.25
Grantz, A., Scott, R.A., Drachev, S.S., Moore, T.E., Valin, Z.C., 2011b. Sedimentary successions of the Arctic Region (58–64° to 90°N) that may be prospective for hydrocarbons. In: Spencer, A.M., Embry, A.F., Gautier, D.L., Stoupakova, A.V., Sorensen, K. (Eds.), Arctic Petroleum Geology, Geol. Soc. Lond. Mem., vol. 35 The Geological Society, Bath. http://dx.doi.org/10.1144/M35.2
Drachev, S.S., Malyshev, N.A., Nikishin, A.M., 2010. Tectonic history and petroleum geology of the Russian Arctic Shelves: an overview. Vining, B.A., Pickering, S.C. (Eds.), Petroleum Geology: From Mature Basins to New Frontiers −Proceedings of the 7th Petroleum Geology Conference. Geol. Soc. Lond, vol. 7, 591–619. http://dx.doi.org/10.1144/0070591
CONFERENCE PAPERS
DISMEMBERED BENNETT-BARROVIA BLOCK IN THE EAST SIBERIAN ARCTIC SHELF AND ITS IMPLICATIONS FOR THE AMERASIAN ARCTIC GEOLOGY
Sergey Drachev (ArcGeoLink Ltd., UK)
Victoria Ershova, Andrey Khudoley (Department of Regional Geology, Institute of Earth Science, St. Petersburg State University, RF)
Stanislaw Mazur (Institute of Geological Sciences, Polish Academy of Sciences, Poland)
Andrey Prokopiev (Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences, RF)
Abstract:
The East Siberian Arctic Shelf (ESAS) is a key region for understanding the pre-Late Cretaceous geological history of the Arctic. Interpretation of new seismic and geologic data that became available since late 2000s allows us for developing a new tectonic model of ESAS. The latter is pictured to consist of the Kotel’nyi, De Long, & Wrangel-Chukotka crustal blocks, which are divided by a broad North Chukchi Basin (NCB) underlain by thinned lower continental crust and exhumed mantle. We infer that these blocks together with Chukchi Borderland and, perhaps, Arctic Alaska represent fragments of what once was a single continental mass – the Bennett-Barrovia Block (BBB) after Natal’in et al. (1999). BBB key characteristics are:
Sergey Drachev (ArcGeoLink Ltd., UK)
Victoria Ershova, Andrey Khudoley (Department of Regional Geology, Institute of Earth Science, St. Petersburg State University, RF)
Stanislaw Mazur (Institute of Geological Sciences, Polish Academy of Sciences, Poland)
Andrey Prokopiev (Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences, RF)
Abstract:
The East Siberian Arctic Shelf (ESAS) is a key region for understanding the pre-Late Cretaceous geological history of the Arctic. Interpretation of new seismic and geologic data that became available since late 2000s allows us for developing a new tectonic model of ESAS. The latter is pictured to consist of the Kotel’nyi, De Long, & Wrangel-Chukotka crustal blocks, which are divided by a broad North Chukchi Basin (NCB) underlain by thinned lower continental crust and exhumed mantle. We infer that these blocks together with Chukchi Borderland and, perhaps, Arctic Alaska represent fragments of what once was a single continental mass – the Bennett-Barrovia Block (BBB) after Natal’in et al. (1999). BBB key characteristics are:
- Neoproterozoic basement revealed by dominant Timanian Zr signal,
- similar Paleozoic lithostratigraphy across nowadays separated blocks,
- evidences of a Devonian compressional event on Kotel’nyi and Wrangel islands,
- similar distribution of detrital zircon ages in Paleozoic strata.
KHATANGA-LOMONOSOV FRACTURE ZONE: ARGUMENTS FOR AND AGAINST
Sergey Drachev (ArcGeoLink Ltd., UK)
Abstract:
In the present-day plate tectonic setting, the Laptev Sea represents a rare case of a direct intersection of an oceanic spreading ridge (the Gakkel Ridge; GR) with a continental margin that can be described as a T-junction. Understanding how this junction formed and evolved represents a fundamental task that allows us to address processes governing the breakup of continents.
Grachev (1970 & 1982) was the first who suggested that GR penetrates into the Laptev Shelf resulting in a series of rifts developed on the shelf (Laptev rift system; LRS) and south of it. Fujita et al. (1990) inferred a Severnyi Transfer fault as an accommodation zone between the Eurasian spreading basin (ESB) and LRS. The Severnyi Transfer closely resembles the Khatanga Lineament proposed by Galabala (1983).
The idea of a transform fault boundary between ESB and LRS was further developed by Drachev et al. (1998, 2003, 2018), Drachev (2011) who called it a Khatanga-Lomonosov fracture zone (KhLFZ). KhLFZ is needed to accommodate a presumably greater plate divergence rate in ESB as compared to LRS, where continental lithosphere has not undergone the complete rupture. KhLFZ acted as a major shear zone that was been preventing direct penetration of the GR into the continent (‘stalled rift’ of Van Wijk & Blackman 2005) and accommodating eastward displacement of the Lomonosov Ridge with regard to the adjacent shelf. Recent long-offset seismic refraction data have, for the first time, provided reliable evidences in support of the KhLFZ. In this presentation, we consider such evidences and test opposing concepts.
Sergey Drachev (ArcGeoLink Ltd., UK)
Abstract:
In the present-day plate tectonic setting, the Laptev Sea represents a rare case of a direct intersection of an oceanic spreading ridge (the Gakkel Ridge; GR) with a continental margin that can be described as a T-junction. Understanding how this junction formed and evolved represents a fundamental task that allows us to address processes governing the breakup of continents.
Grachev (1970 & 1982) was the first who suggested that GR penetrates into the Laptev Shelf resulting in a series of rifts developed on the shelf (Laptev rift system; LRS) and south of it. Fujita et al. (1990) inferred a Severnyi Transfer fault as an accommodation zone between the Eurasian spreading basin (ESB) and LRS. The Severnyi Transfer closely resembles the Khatanga Lineament proposed by Galabala (1983).
The idea of a transform fault boundary between ESB and LRS was further developed by Drachev et al. (1998, 2003, 2018), Drachev (2011) who called it a Khatanga-Lomonosov fracture zone (KhLFZ). KhLFZ is needed to accommodate a presumably greater plate divergence rate in ESB as compared to LRS, where continental lithosphere has not undergone the complete rupture. KhLFZ acted as a major shear zone that was been preventing direct penetration of the GR into the continent (‘stalled rift’ of Van Wijk & Blackman 2005) and accommodating eastward displacement of the Lomonosov Ridge with regard to the adjacent shelf. Recent long-offset seismic refraction data have, for the first time, provided reliable evidences in support of the KhLFZ. In this presentation, we consider such evidences and test opposing concepts.