Title

S.I. ANDREEV, V.E. KAZAKOVA, A.B. CHERNOMORDIK, S.F. BABAYEVA (VNIIOkeangeologia)

Minerageny of the sea shelf and deep­-sea zones of the Russian Far Eastern seas For the first time the authors have made a structural and mineragenic analysis of distribution of the sea shelf and deep­-sea types of solid minerals of the Russian Far Eastern seas with the use of cross-­continental­-oceanic systems of deep faults. On the shelf, we have delineated the Sea of Japan placer province of gold, tin and ferrous metals; the Sea of Okhotsk megaprovince of placer gold, locally platinum and chromite; the Pacific megaprovince of placer ferrous metals; the Bering Sea placer polymetallic province. In the aquatic part: The Sea of Japan phosphorite province; the barite and gas hydrates field in the Sea of Okhotsk; the volcano-­active back-­arc Okhotsk area and hydrothermally active area in the Bering Sea back-­arc region, where a discovery of deep-­sea polymetallic sulphides is probable.
Keywords: Far Eastern seas, gold, ferrous metals, deep-­sea polymetallic sulphides, barite, gas hydrates, megaprovince.