TITLE:
Early Proterozoic U-Pb Zircon Ages from Basement Gneiss at the Solovetsky Archipelago, White Sea, Russia
AUTHORS:
Stephan Schuth, Victor I. Gornyy, Jasper Berndt, Sergei S. Shevchenko, Alexandr F. Karpuzov, Tim Mansfeldt
KEYWORDS:
Solovetsky Archipelago; Granitic Gneiss Outcrop; Age Determination; 2.430 Ga
JOURNAL NAME:
International Journal of Geosciences,
Vol.3 No.2,
May
23,
2012
ABSTRACT: The central region of the Neoarchaean Belomorian Mobile Belt (BMB) is, except for the Solovetsky Archipelago, largely covered by the White Sea. A newly discovered granitic gneiss outcrop on Solovetsky Island, Russia, enables a first age determination of the archipelago and evaluation of the hitherto poorly constrained central BMB. Zircons separated from the orthogneiss were analysed with SIMS-SHRIMP and LA-ICP-MS techniques. Both techniques yield a concordant U-Pb age of ca. 2.430 Ga, coinciding with ages of granitic intrusions in the BMB ca. 50 km west of the Solovetsky Islands.