U–Th–He Dating of Pyrite from the Uzelga Copper-Zinc Massive Sulfide Deposit (South Urals, Russia): First Application of a New Geochronometer


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Based on a study of pyrite from the Uzelga Cu–Zn volcanogenic massive sulfide (VMS) deposit (South Urals) the age of ore mineralization was first determined with the direct age dating method, based on the fraction of radiogenic helium, incorporated into the pyrite crystal lattice from submicron inclusions of U and Th minerals. Taking into account the measurement errors, the obtained age of 377 ± 8 Ma (MSWD = 1.2) is quite consistent with the independent age dates available for the ore mineralization (Late Eifelian–Early Givetian, 385–390 Ma).

Sobre autores

O. Yakubovich

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

Autor responsável pela correspondência
Email: olya.v.yakubovich@gmail.com
Rússia, St. Petersburg, 199034; St. Petersburg, 199034

I. Vikentyev

Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, Moscow, 119017

O. Zarubina

Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, Irkutsk, 664033

N. Bryanskiy

Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, Irkutsk, 664033

B. Gorokhovskii

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, St. Petersburg, 199034

A. Kotov

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, St. Petersburg, 199034

S. Dril

Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, Irkutsk, 664033

N. Bortnikov

Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences

Email: olya.v.yakubovich@gmail.com
Rússia, Moscow, 119017

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