Granophyre Norites and Diorites of the Jarva-Varaka Massif (monchegorsk Ore Area, Kola Region, Russia): Geology, Petrography, Geochemistry, Geochronology and Origin

L. I. Nerovich,T. V. Kaulina,T. B. Bayanova,V. L. Il’chenko,M. A. Gannibal,E. L. Kunakkuzin,A. V. Bazai,S. V. Mudruk,E. S. Borisenko, M. A. Sosnovskaya

Geochemistry international（2023）

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摘要

The results of geological, geochemical, and geochronological studies of granophyre rocks from the Jarva-Varaka Massif (Kola region) are presented. The 2-km section of the massif is composed of mafic and felsic norites, hypersthene diorite, pigeonite-augitic diorite, quartz diorite, and granodiorite. All these rocks contain a variable amount of granophyre (micropegmatite), from 10

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mafic layered intrusions,granophyre,geochemistry,rare earth elements,U-Pb age,pseudotachylitic breccia,impact event

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