Late Paleozoic granitic rocks of the Chukchi Peninsula:composition and location in the structure of the Russian Arctic

An Early Carboniferous (352–359 Ma) U-Pb (TIMS, SIMS) age is established for granitic rocks of the Kibera pluton, quartz sienites of the Kuekvun pluton, and granites from the pebbles in the basement of Carboniferous rocks of the Kuul and Kuekvun uplifts in the Central Chukotka region. These data sup...

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Bibliographic Details
Published in:Geotectonics
Main Authors: Luchitskaya, M. V., Sokolov, S. D., Kotov, A. B., Natapov, L. M., Belousova, E. A., Katkov, S. M.
Format: Article in Journal/Newspaper
Language:English
Published: 2015
Subjects:
Arctic
Canada
Yukon
Chukchi
Chukotka
Alaska
Online Access:https://researchers.mq.edu.au/en/publications/c4217f04-e661-4eb8-8855-5660fe60dbb8
https://doi.org/10.1134/S0016852115040056
http://www.scopus.com/inward/record.url?scp=84938342898&partnerID=8YFLogxK
Description
Summary:An Early Carboniferous (352–359 Ma) U-Pb (TIMS, SIMS) age is established for granitic rocks of the Kibera pluton, quartz sienites of the Kuekvun pluton, and granites from the pebbles in the basement of Carboniferous rocks of the Kuul and Kuekvun uplifts in the Central Chukotka region. These data support the suggestion of granitic magmatism to occur in the region in the Late Paleozoic. The petrogeochemistry of most granitic rocks of the Kibera and Kuekvun plutons is similar to that of I-type granites, and their age coincides with tectonic events of Ellesmerian Orogeny in the Arctic region at the Late Devonian-Early Carboniferous boundary. The Devonian-Early Carboniferous granitic complexes extend to the territories of the Arctic Alaska, Yukon, and Arctic Canada, which indicates a common geological evolution within the Chukotka-Arctic Alaska block, which experienced a motion away from Arctic Canada.

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