Paleoarchean U–Pb (SIMS SHRIMP-II) Age of Mafic Granulites from the Bug Complex, Ukrainian Shield


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Abstract

Data on the U–Pb (SIMS SHRIMP-II) age (3628 ± 38 and 2845 ± 65 Ma) of zircon from the inclusion of mafic granulite in gneiss–enderbites of the Bug complex in Ukraine are obtained. A zircon age of 3628 ± 38 Ma for the first time has allowed us to identify the occurrence of basic magmatism at the Paleo- and Eoarchean boundary in the Bug region. The age of 2845 ± 65 Ma dates the imposed metamorphism manifested everywhere in the Bug region that led to considerable amphibolization and partial melting of the rock.

About the authors

Yu. S. Egorova

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199034

O. L. Galankina

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199034

S. A. Sergeev

Karpinsky Russian Geological Research Institute

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199106

S. B. Lobach-Zhuchenko

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Author for correspondence.
Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199034

T. V. Kaulina

Geological Institute, Kola Science Center, Russian Academy of Sciences

Email: slobach-zhuchenko@mail.ru
Russian Federation, Apatity, 184209

Yu. B. Marin

St. Petersburg Mining University

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199106

A. V. Yurchenko

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199034

S. G. Skublov

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences; St. Petersburg Mining University

Email: slobach-zhuchenko@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199106

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