TY JOUR TI Sourceland of terrigenous material during the formation of aquatic deposits of the Keltmin burial canyon (based on the study of chromespinelides) KW mineral composition KW burial canyon KW through valley KW fluvioglacial deposits KW alluvium KW chromespinels KW typomorphism KW provenance source JO Vestnik of geosciences AU Isakov, V.A. AU Andreicheva, L.N. PY 2025 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"