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

M. V. Luchitskaya*, S. D. Sokolov, A. B. Kotov, L. M. Natapov, E. A. Belousova, S. M. Katkov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)243-268
Number of pages26
JournalGeotectonics
Volume49
Issue number4
DOIs
Publication statusPublished - 29 Jul 2015

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