Paleoarchean U–Pb (SIMS SHRIMP-II) age of mafic granulites of the bug complex (Ukrainian shield) | Zendy

С. Б. Лобач-Жученко | Zendy; T. B. Kaulina | Zendy; Yu. B. Marin | Zendy; А. V. Yurchenko | Zendy; S. G. Skublov | Zendy; Yu. S. Egorova | Zendy; О. Л. Галанкина | Zendy; S. A. Sergeev | Zendy

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Paleoarchean U–Pb (SIMS SHRIMP-II) age of mafic granulites of the bug complex (Ukrainian shield)

Author(s) -

С. Б. Лобач-Жученко,

T. B. Kaulina,

Yu. B. Marin,

А. V. Yurchenko,

S. G. Skublov,

Yu. S. Egorova,

О. Л. Галанкина,

S. A. Sergeev

Publication year - 2019

Publication title -

доклады академии наук

Language(s) - English

Resource type - Journals

ISSN - 0869-5652

DOI - 10.31857/s0869-56524843344-347

Subject(s) - zircon , mafic , geochemistry , granulite , metamorphism , geology , shrimp , protolith , archean , partial melting , shield , charnockite , petrology , basalt , geomorphology , biology , structural basin , facies , fishery

Mafic granulites (metamorphosed tholeite-komatiite volcanic rocks) represent the inclusions in gneissenderbite of the Bug complex (southwest of the Ukrainian shield). The studied mafic inclusion has two zircon generations of magmatic origin that yield, respectively, SHRIMP zircon U–Pb ages of 3628±58 Ma and 2845±65 Ma. The first age is the oldest date the earliest stage of basic magmatism on the Ukrainian shield. The age of the second zircon is interpreted as a result of partial melting, synchronous with the metamorphism in the area.

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