Zircon from Intraplate Gabbroic Rocks of Western Chukotka (Anyui Plutonic Complex) and Interpretation of Its Age

G. V. Ledneva; E. P. Isaeva; S. D. SokolovB. A. BazylevA. I. Boldyreva

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Zircon from Intraplate Gabbroic Rocks of Western Chukotka (Anyui Plutonic Complex) and Interpretation of Its Age

机译：Zircon from Intraplate Gabbroic Rocks of Western Chukotka (Anyui Plutonic Complex) and Interpretation of Its Age

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Abstract The timing of intraplate magmatism in Western Chukotka manifested in the formation of gabbroic rocks of the Anyui plutonic complex of the Anyui–Chukotka fold belt is proved by U–Th–Pb (SIMS) age of zircon. The results obtained and data published suggest that intensive intraplate magmatism in the Chukotka microcontinent was commenced at the time corresponding to the Permian–Triassic boundary and was terminated no later than in the Middle–Late Triassic. This intraplate magmatism was coeval with the breakup of Pangaea, and it probably took place at rifted continental margin settings.

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《Doklady earth sciences》 |2022年第1期|446-451|共6页
作者
G. V. Ledneva; E. P. Isaeva; S. D. SokolovB. A. BazylevA. I. Boldyreva;
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作者单位

Geological Institute, Russian Academy of Sciences;

Karpinsky Russian Geological Research Institute;

Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences;

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正文语种英语
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U–Th–Pb SIMS zircon age; gabbroic rocks; intraplate magmatism; Anyui–Chukotka fold belt; Permian; Triassic;

Zircon from Intraplate Gabbroic Rocks of Western Chukotka (Anyui Plutonic Complex) and Interpretation of Its Age

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