Geological-formation studies of Peter the Great Bay (1995–2015). L.A. IZOSOV, E.A. BESSONOVA, K.Yu. KRAMCHANIN , A.A. OGORODNY, N.S. LEE
Keywords:
geological formations, ring structures, Late Permian magmatic rocks, deep-water deposits, ore-bearing formations.Abstract
Geological-formation studies of Peter the Great Bay (1995–2015). L.A. IZOSOV, E.A. BESSONOVA,
K.Yu. KRAMCHANIN (V.I. Il`ichev Pacific Oceanological Institute, FEB RAS, Vladivostok), A.A. OGORODNY
(Far Eastern Federal University, Vladivostok), N.S. LEE (V.I. Il`ichev Pacific Oceanological Institute, FEB RAS,
Vladivostok).
Studies of the Formation expedition of the laboratory of Geological formations of the sea bottom POI FEB RAS
offshore in Peter the Great Bay (2008–2015), as well as small-scale geologic mapping of shelf and continental slope of the sea of Japan (sheets K-52 and K-53; “Dalmorgeologia”, 1995–2003): 1) composed of small-scale geological map with elements of the deep structure of the Gulf of Peter the Great and his coast cosmic-geological large-scale maps of the major Islands; 2) selected geological formations: a) ancient platforms, b) mobile rift zones, c) young platforms (cover); 3) revealed numerous ring structures; 4) the features of the indicator for the region of the Late Permian magmatic rocks show that in the process of their formation involved the sialic crust and the oceanic basaltic melts; 5) first installed the deep-water deposits containing the microfauna of the Lower and Middle Triassic, similar to the deposits developed in the Sikhote-Alin thrust-folded system; 6) shows that Late Permian granite-rhyolite formation is the ore-bearing – carries non-industrial gold-silver mineralization.
