TY JOUR TI Geochemical features of soils of Valaam Island KW Valaam sill KW gabbro-diabases KW monzonites KW ferruginous-metamorphic soils KW soil geochemistry JO Vestnik of geosciences AU Panova, E.G. AU Sheshukova, A.A. AU Bakhmatova, K.A. AU Rusakov, G.A. AU Chukov, S.N. PY 2025 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"