Institution: | (1) Institute of Precambrian Geology and Geochronology (IGGD), the Russian Academy of Sciences, nab. Makarova 2, St. Petersburg, 199034, Russia;(2) Center of Isotope Investigations, Karpinsky All-Russia Research Institute of Geology (VSEGEI), Srednii pr. 74, St. Petersburg, 199106, Russia |