TY JOUR TI Prospective exploration targets in the Tournaisian clinoforms of the Aktanish-Chishmy trough KW Aktanish-Chishmy trough KW carbonate clinoforms KW sedimentary aprons KW exploration sites KW oil prospects KW geological exploration JO Vestnik of geosciences AU Chanysheva, L.N. AU Mirnov, R.V. AU Kotenev, Y.A. PY 2026 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"