1. Institute of the Earth's Crust Siberian Branch of the Russian Academy of Sciences Irkutsk Russian Federation
2. Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences Novosibirsk Russian Federation
3. Department of Geology and Geophysics Novosibirsk State University Novosibirsk Russian Federation
4. Department of Earth Science University of the Western Cape Bellville Republic of South Africa