Devonian–Permian sedimentary basins and paleogeography of the Eastern Russian Arctic: An overview

Ershova, Victoria; Prokopiev, A. V.; Khudoley, A. K.

doi:10.1016/j.tecto.2016.03.026

Cited by 23 publications

(18 citation statements)

References 42 publications

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“…Detrital zircon study of the upper Palaeozoic rocks revealed dominant Mesoproterozoic to middle Paleozoic detrital zircon populations with almost complete absence of Paleoproterozoic and Archean grains [31,120]. Therefore, this terrane is very unlikely to have been connected with the Siberian Craton in Palaeozoic.…”

Section: Arctic Alaska-chukotka Microcontinent (Aacm)mentioning

confidence: 96%

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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Section: Arctic Alaska-chukotka Microcontinent (Aacm)mentioning

confidence: 96%

Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

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“…74 ), and ( c ) simplified and generalized stratigraphic column of Permian sedimentary rocks of South Taimyr (modified from ref. 75 ).…”

Section: Introductionmentioning

confidence: 99%

The main pulse of the Siberian Traps expanded in size and composition

Augland

Ryabov

Vernikovsky

et al. 2019

Sci Rep

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Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. Taimyr and West Siberia, have since long been correlated, but existing geochronological data cannot resolve at a precision better than ~5 m.y. whether (sub)volcanic activity in these areas actually occurred during the main pulse or later. We report the first high precision U-Pb zircon geochronology from two alkaline ultramafic-felsic layered intrusive complexes from Taimyr, showing synchronicity between these and the main Siberian Traps (sub)volcanic pulse, and the presence of a second Dinerian-Smithian pulse. This is the first documentation of felsic intrusive magmatism occurring during the main pulse, testifying to the Siberian Trap’s compositional diversity. Furthermore, the intrusions cut basal basalts of the Taimyr lava stratigraphy hence providing a minimum age of these basalts of 251.64 ± 0.11 Ma. Synchronicity of (sub)volcanic activity between Taimyr and the Siberian Traps imply that the total area of the Siberian Traps main pulse should include a ~300 000 km2 area north of Norilsk. The vast aerial extent of the (sub)volcanic activity during the Siberian Traps main pulse may explain the severe environmental consequences.

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“…Stratigraphic column of Devonian-Permian rocks of study Area 1 (thickness and lithology are mainly based on our field data with age constrains mainly based on Kos'ko et al, 1985). deposits in the southern part of the island varies from 1 to 7.7 km, however this great thickness is likely to be an overestimation due to repetition of the stratigraphy by faulting and folding (Ershova et al, 2016b). The Frasnian deposits crop out in both study areas.…”

Section: Devonianmentioning

confidence: 90%

U–Pb and Hf isotope analysis of detrital zircons from Devonian–Permian strata of Kotel’ny Island (New Siberian Islands, Russian Eastern Arctic): Insights into the Middle–Late Paleozoic evolution of the Arctic

Ershova

Prokopiev

Andersen³

et al. 2018

Journal of Geodynamics

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Lu-Hf isotope analyses of detrital zircons collected from the Devonian-Permian strata of Kotel'ny Island (New Siberian Islands, Eastern Russian Arctic) provide vital information about provenance areas and history of the poorly studied Paleozoic basement of the Laptev and East Siberian shelves. Based on detrital zircon signatures, our study reveals that the studied succession can be divided into two distinct groups: Devonian-Lower Carboniferous and uppermost Carboniferous-Permian. U-Pb and Lu-Hf isotope signatures of detrital zircons from the Devonian-Lower Carboniferous deposits correspond to well-known Precambrian-Early Paleozoic magmatic and metamorphic events within the northern part of Baltica, indicative of a peri-Baltican affinity of the New Siberian Islands during this time. A lack of zircon ages close to the depositional age of the formation, along with a mature composition of the sandstones, suggest that the Devonian-Lower Carboniferous succession formed as a result of extensive sediment reworking from a distal provenance. By contrast, uppermost Carboniferous-Permian sandstones have an immature composition, with numerous young detrital zircons close to the age of sedimentation and Hf signatures typical of a continental arc environment. We therefore suggest that the provenance for these younger deposits was located within a coeval orogeny and based on previous studies, we conclude that these deposits were sourced from the northwestern part of the Uralian Orogen.

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Devonian–Permian sedimentary basins and paleogeography of the Eastern Russian Arctic: An overview

Cited by 23 publications

References 42 publications

Fold belts and sedimentary basins of the Eurasian Arctic

Fold belts and sedimentary basins of the Eurasian Arctic

The main pulse of the Siberian Traps expanded in size and composition

U–Pb and Hf isotope analysis of detrital zircons from Devonian–Permian strata of Kotel’ny Island (New Siberian Islands, Russian Eastern Arctic): Insights into the Middle–Late Paleozoic evolution of the Arctic

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