Tectonic Evolution of the Arctic Shelf of Siberia From Riphean Through Mesozoic Time

Gramberg, I. S.; Kos’ko, M. K.; Pogrebitskiy, Yu. Ye.

doi:10.1080/00206818609466336

Cited by 4 publications

(6 citation statements)

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“…At least four fundamentally different models exist for the tectonic position of the New Siberian Islands during the Paleozoic. The first model, presented by Gramberg et al (1986), Kuzmichev (2009) and Danukalova et al (2014), considers the New Siberian Islands to represent the distal north-eastern (in present co-ordinates) passive margin of the Siberian Craton. The Siberian-affinity model is mainly based on the similarity between the faunas of Bennett Island and Siberia.…”

Section: Paleogeographic Restorationmentioning

confidence: 99%

The De Long Islands: A missing link in unraveling the Paleozoic paleogeography of the Arctic

et al. 2016

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The vast Laptev and East Siberian shelves in the eastern Russian Arctic, largely covered by a shallow sea and buried beneath sea ice for 9 months of the year, remain one of the least studied parts of continental crust of the Earth and represent a big unknown when performing pre-Cenozoic reconstructions of the Arctic. The De Long Islands provide an important window into the geology of this area and are a key for understanding the Early Paleozoic history of the Amerasian Arctic. Four of them (Jeannette, Henrietta, Bennett and Zhokhov islands) were studied using structural data, petrographic and geochemical analyses and U-Pb zircon age dating to offer the following new constraints for the Early Paleozoic paleogeography of the Arctic realm. The basement beneath the De Long Islands is of Late Neoproterozoic to earliest Cambrian age, about 670-535 Ma. In the Early Paleozoic, the De Long Islands were located along the broad Timanian margin of Baltica, with a clastic sediment provenance from the Timanian, Grenville-Sveconorwegian, and Baltic Shield domains. The Cambro-Ordovician volcaniclastic successions on Jeannette and Henrietta islands formed part of a continental volcanic arc with a corresponding back-arc basin located to the south (in present coordinates). On the continent-ward side of the back-arc basin, shallow marine shelf clastic and carbonate rocks were deposited, which are exposed today on Bennett Island in the southwest of the archipelago (in modern coordinates). The De Long Islands together with other continental blocks, such as Severnaya Zemlya, Arctic Alaska-Chukotka, and the Alexander Terrane, formed the contiguous active continental margin of Baltica during the Early Paleozoic. Today however, these terranes are spread out over a distance of 5000 km across the Arctic and eastern Pacific margins due to the subsequent opening of a series of Late Paleozoic, Mesozoic and Cenozoic oceanic basins.

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Section: Paleogeographic Restorationmentioning

confidence: 99%

The De Long Islands: A missing link in unraveling the Paleozoic paleogeography of the Arctic

et al. 2016

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“…Ageev (1979) hypothesized that much of the terrigenous clastic strata outcropping only in the central part of the island were Devonian, and estimated their thickness at about 1500 m. However Chernyak (1973, 1974) showed Devonian strata over very limited area with thicknesses of a few hundred metres. Gromov Gordlnsky, Bogdanov Gromov, 1947and Lobanov, 1957Klrushlna, 1947 Tll' man, 1964 Prior to fieldwork in 1986, a number of problems were identified as priorities for investigation (Kos'ko, 1986). Specifically, they included: i) the ages of some rock successions; ii) the scale and age(s) of metamorphism and magmatic activity; iii) the style and age of pre-Late Triassic tectonic activity; iv) the age of volcanic rocks; v) the correlation of some stratigraphic Til' man Kameneva, Gnibidenko, and Bogdanov, Ivanov, 1973Ageev, 1979 This -?--…”

Section: Previous Workmentioning

confidence: 99%

“…Northern Chukotka has been divided into two major fold belts: the Chukchi fold belt, which includes the mainland, Wrangel Island, and associated Chukchi Sea continental shelf, and the New Siberian fold belt, which includes the New Siberian Islands and surrounding East Siberian Sea continental shelf east and west of the islands (Gramberg et al, 1986). These two fold belts, as well as the Verkhoyansk fold belt, which is juxtaposed with the west end of the New Siberian fold belt, and several smaller fold belts surrounding Pacific-side terranes of southern Chukotka (including the South Anyui), underwent intense pervasive deformation and were intruded by granitic plutons during the Middle Jurassic to Lower Cretaceous Chukotkan Orogeny.…”

Section: Mesozoic Orogenesismentioning

confidence: 99%

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Geology of Wrangel Island, between Chukchi and East Siberian seas, northeastern Russia

Kos’ko¹,

Cecile

Harrison³

et al. 1993

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In 1984, Canada and the USSR entered into an Arctic Science Exchange agreement, an important theme of which is the comparison of the geological evolution of the Arctic regions of both countries. Before 1984, progress in understanding the geology of the Arctic was hindered by political and cultural barriers. Soviet and western scientists had not enjoyed easy access to each others' field areas, and this inhibited understanding and exchange of data. The 1984 agreement between Canada and the USSR 1 for scientific and technological exchange in the Arctic represents a major step forward in the pursuit of understanding the geology of the Arctic region. This report, on the geology of a remote and important Russian island, is a direct result of this exchange, and this cooperative effort will be a landmark in providing new constraints to regional plate tectonic models and in providing basic information to aid in exploration and evaluation of the resource potential of the Canada Basin region.

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“…The New Siberian Islands have not been included in recent Arctic reconstruction due to lack of provenance data. The New Siberian Islands have been considered a Peri-Siberian tectonic block (Gramberg et al 1986;Kuzmichev 2009;Danukalova et al 2014) or a portion of a terrane termed 'Arctida' (Zonenshain et al 1990). Metelkin et al (in press) considers the New Siberian Islands to represent a small microcontinental terrane that separated from the Siberian Craton during the Neoproterozoic and Palaeozoic.…”

Section: Introductionmentioning

confidence: 99%

U/Pb dating of detrital zircons from late Palaeozoic deposits of Bel’kovsky Island (New Siberian Islands): critical testing of Arctic tectonic models

Ershova

Prokopiev

Khudoley

et al. 2015

International Geology Review

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Tectonic Evolution of the Arctic Shelf of Siberia From Riphean Through Mesozoic Time

Cited by 4 publications

References 0 publications

The De Long Islands: A missing link in unraveling the Paleozoic paleogeography of the Arctic

The De Long Islands: A missing link in unraveling the Paleozoic paleogeography of the Arctic

Geology of Wrangel Island, between Chukchi and East Siberian seas, northeastern Russia

U/Pb dating of detrital zircons from late Palaeozoic deposits of Bel’kovsky Island (New Siberian Islands): critical testing of Arctic tectonic models

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