TY - JOUR

T1 - U–Pb age and Hf isotope geochemistry of detrital zircons from cambrian sandstones of the severnaya Zemlya archipelago and Northern Taimyr (Russian high arctic)

AU - Ershova, Victoria

AU - Prokopiev, Andrei

AU - Khudoley, Andrey

AU - Andersen, Tom

AU - Kullerud, Kåre

AU - Kolchanov, Daniil

PY - 2020/1

Y1 - 2020/1

N2 - U–Pb and Lu–Hf isotope analyses of detrital zircons collected from metasedimentary rocks from the southern part of Kara Terrane (northern Taimyr and Severnaya Zemlya archipelago) provide vital information about the paleogeographic and tectonic evolution of the Russian High Arctic. The detrital zircon signatures of the seven dated samples are very similar, suggesting a common provenance for the clastic detritus. The majority of the dated grains belong to the late Neoproterozoic to Cambrian ages, which suggests the maximum depositional age of the enclosing sedimentary units to be Cambrian. The εHf(t) values indicate that juvenile magma mixed with evolved continental crust and the zircons crystallized within a continental magmatic arc setting. Our data strongly suggest that the main provenance for the studied clastics was located within the Timanian Orogen. A review of the available detrital zircon ages from late Neoproterozoic to Cambrian strata across the wider Arctic strongly suggests that Kara Terrane, Novaya Zemlya, Seward Peninsula (Arctic Alaska), Alexander Terrane, De Long Islands, and Scandinavian Caledonides all formed a single tectonic domain during the Cambrian age, with clastics predominantly sourced from the Timanian Orogen.

AB - U–Pb and Lu–Hf isotope analyses of detrital zircons collected from metasedimentary rocks from the southern part of Kara Terrane (northern Taimyr and Severnaya Zemlya archipelago) provide vital information about the paleogeographic and tectonic evolution of the Russian High Arctic. The detrital zircon signatures of the seven dated samples are very similar, suggesting a common provenance for the clastic detritus. The majority of the dated grains belong to the late Neoproterozoic to Cambrian ages, which suggests the maximum depositional age of the enclosing sedimentary units to be Cambrian. The εHf(t) values indicate that juvenile magma mixed with evolved continental crust and the zircons crystallized within a continental magmatic arc setting. Our data strongly suggest that the main provenance for the studied clastics was located within the Timanian Orogen. A review of the available detrital zircon ages from late Neoproterozoic to Cambrian strata across the wider Arctic strongly suggests that Kara Terrane, Novaya Zemlya, Seward Peninsula (Arctic Alaska), Alexander Terrane, De Long Islands, and Scandinavian Caledonides all formed a single tectonic domain during the Cambrian age, with clastics predominantly sourced from the Timanian Orogen.

KW - Arctic

KW - Cambrian

KW - Detrital zircon

KW - Paleogeography

KW - Provenance

KW - Severnaya Zemlya

KW - Taimyr

UR - http://www.scopus.com/inward/record.url?scp=85077435753&partnerID=8YFLogxK

UR - http://www.mendeley.com/catalogue/upb-age-hf-isotope-geochemistry-detrital-zircons-cambrian-sandstones-severnaya-zemlya-archipelago-no

U2 - 10.3390/min10010036

DO - 10.3390/min10010036

M3 - Article

AN - SCOPUS:85077435753

VL - 10

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 1

M1 - 36

ER -