TY - JOUR

T1 - Paleomagnetism of the Franz Josef Land Archipelago: Application to the Mesozoic Tectonics of the Barents Sea Continental Margin

AU - Metelkin, D. V.

AU - Abashev, V. V.

AU - Vernikovsky, V. A.

AU - Mikhaltsov, N. E.

N1 - Funding Information: We are grateful to M.V. Lomonosov Northern (Arctic) Federal University, the Russian Arctic National Park, the crew of the ship Professor Molchanov, and the participants of the Arctic Floating University educational project for as-sistance in fieldwork on the Franz Josef Land archipelago in 2017. Corresponding member of the RAS A.N. Didenko and Dr. V.F. Proskurnin are thanked for constructive remarks and review of the manuscript. This work was supported by the Russian Science Foundation (projects 19-17-00091 and 21-17-00052). Publisher Copyright: © 2022, Novosibirsk State University.

PY - 2022/4

Y1 - 2022/4

N2 - We report new paleomagnetic and geochronological data for rocks of the Franz Josef Land archipelago and generalize avail-able information about the paleomagnetism of the Barents Sea continental margin as applied to the issues of the Mesozoic Arctic tectonics. Specifically, the obtained age estimates are indicative of a brief episode of mantle plume magmatism at the Barremian–Aptian boundary (Early Cretaceous). The paleomagnetic data shows that intraplate magmatism formations in the High Arctic, including the Franz Josef Land traps, are nothing else than a trace of the Iceland plume on the migrating tectonic plates of the region. Thus, the Iceland plume was geo-graphically stationary for at least the last 125 Myr. Our paleotectonic reconstructions suggest a direct connection of the intraplate strike-slip systems of the Eurasian continent with the configuration and subsequent evolution mode of Mesozoic marginal basins and spreading axes during the initial opening stage of the Arctic Ocean.

AB - We report new paleomagnetic and geochronological data for rocks of the Franz Josef Land archipelago and generalize avail-able information about the paleomagnetism of the Barents Sea continental margin as applied to the issues of the Mesozoic Arctic tectonics. Specifically, the obtained age estimates are indicative of a brief episode of mantle plume magmatism at the Barremian–Aptian boundary (Early Cretaceous). The paleomagnetic data shows that intraplate magmatism formations in the High Arctic, including the Franz Josef Land traps, are nothing else than a trace of the Iceland plume on the migrating tectonic plates of the region. Thus, the Iceland plume was geo-graphically stationary for at least the last 125 Myr. Our paleotectonic reconstructions suggest a direct connection of the intraplate strike-slip systems of the Eurasian continent with the configuration and subsequent evolution mode of Mesozoic marginal basins and spreading axes during the initial opening stage of the Arctic Ocean.

KW - Amerasia basin

KW - Arctic

KW - Barents Sea continental margin

KW - Franz Josef Land archipelago

KW - High Arctic Large Igneous Province

KW - Iceland plume

KW - Paleomagnetism

KW - strike-slip kinematics

UR - http://www.scopus.com/inward/record.url?scp=85133658581&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/602402d0-3f59-31b3-a06e-655d05ac0f36/

U2 - 10.2113/RGG20214432

DO - 10.2113/RGG20214432

M3 - Article

AN - SCOPUS:85133658581

VL - 63

SP - 342

EP - 367

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 4

ER -