Affiliation: | (1) St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199164, Russia;(2) Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, St. Petersburg, 199034, Russia;(3) Vinogradov Institute of Geochemistry and Analytical Chemistry, Siberian Division, Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia;(4) Center of Isotopic Studies, Karpinskii All-Russia Research Institute of Geology, Srednii pr. 74, St. Petersburg, 199106, Russia |