Major geological features of the islands of the East Siberian and Chukchi Seas and the northern coast of Chukotka

Kos’ko, M. K.; Lopatin, B. G.; Ganelin, V. G.

doi:10.1016/0025-3227(90)90092-x

Cited by 33 publications

(12 citation statements)

References 2 publications

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“…By extrapolation from known major unconformities and hiatuses on the New Siberian Islands (Kos'ko et al, 1990;Kos'ko and Trufanov, 2002), from the onshore area of Buor Khaya Bay , and correlating regional seismic unconformities to major plate tectonic events, as well as to major paleoenviromental changes observed in the northern oceans, three regional seismic marker horizons labeled LS1 (Laptev Sea 1), LS2 and LS3 have been defined, albeit some more but less distinct and less continuous seismic horizons are present. Horizon LS1 is the most prominent and extensive horizon.…”

Section: Laptev Sea Shelfmentioning

confidence: 99%

Geology of the Shelves surrounding the New Siberian Islands, Russian Arctic

Franke

Hinz

2009

Stephan Mueller Spec. Publ. Ser.

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Abstract. A total of 11 700 km of multichannel seismic reflection data were acquired during recent reconnaissance surveys of the wide, shallow shelves of the Laptev and western East Siberian Seas around the New Siberian Islands. To the north of the Laptev Sea, the Gakkel Ridge, an active mid-ocean ridge which separates the North American and Eurasian Plates, meets abruptly the steep slope of the continental shelf. Extension has affected the Laptev Shelf since at least the Early Tertiary and has resulted in the formation of three major, generally north-south trending rift basins: the Ust' Lena Rift, the Anisin Basin, and the New Siberian Basin. Our data indicate that the rift basins on the Laptev Shelf are not continuous with those on the East Siberian Shelf. The latter shelf can best be described as an epicontinental platform which has undergone continuous subsidence since the Late Cretaceous. The greatest subsidence occurred in the NE, manifested by a major depocentre filled with inferred (?)Late Cretaceous to Tertiary sediments up to 5 s (twt) thick. On the basis of deep reflection data we revise and adjust Mesozoic domain boundaries around the New Siberian Islands.

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Section: Laptev Sea Shelfmentioning

confidence: 99%

Geology of the Shelves surrounding the New Siberian Islands, Russian Arctic

Franke

Hinz

2009

Stephan Mueller Spec. Publ. Ser.

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“…The archipelago was mapped in the 1970s and 1980s, and its geology has been summarized by Kos'ko et al [75,77] and Kos'ko [73].…”

Section: Arctic Alaska-chukotka Microcontinent (Aacm)mentioning

confidence: 99%

Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

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The vast Eurasian Arctic epicontinental shelf and adjoining mainland has a very complex structure and tectonic history as a result of a series of continent-continent collisions, accretion of terranes and crustal extension phases during Neoproterozoic and Phanerozoic times. Significant parts of major Eurasian fold belts extend far north into the Arctic below thick infill of post-orogenic sedimentary basins, where their architecture remains highly disputed. Large Eurasian Arctic sedimentary basins formed as a result of orogenic collapse, back-arc extension, or intracontinental extension associated with the breakup of the Laurussia, Laurasia, Pangea and Eurasia supercontinents. There are over 40 sedimentary basins of variable age and genesis which are thought to bear significant undiscovered hydrocarbon resources in the region. This article reviews the current state-of-knowledge of Eurasian Arctic tectonics and highlights questions that remain to be addressed. The overall focus is on the Russian sector of the Arctic being less known to a broad geoscience community.

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“…By extrapolation from known major unconformities and hiatuses on the New Siberian Islands (Kos'ko and Trufanov, 2002;Kos'ko et al, 1990), from the onshore area of Buor Khaya Bay and correlating regional seismic unconformities to major plate tectonic events, as well as to major paleoenvironmental changes observed in the northern oceans, three regional seismic marker horizons labeled LS1 (Laptev Sea 1), LS2 and LS3 have been defined, albeit some more but less distinct and less correlatable seismic horizons are present.…”

Section: Laptev Sea Shelfmentioning

confidence: 99%