The recently obtained data on the age of Hoindzhinskaya suite from Western Sakhalin and its significance for justification of the Paleogene–Neogene boundary for the South of the Russian Far East
Keywords:
bivalve mollusks, fossil flora, Oligocene, Miocene, Western Sakhalin, Siziman, Sikhote-Alin.Abstract
The recently obtained data on the age of Hoindzhinskaya suite from Western Sakhalin and its significance for
justification of the Paleogene–Neogene boundary for the South of the Russian Far East. V.D. KHUDIK (Far East
Geological Institute, FEB RAS, Vladivostok), V.T. S`EDIN, I.B. TSOY (V.I. Il`ichev Pacific Oceanological Institute,
FEB RAS, Vladivostok).
The remains of bivalve mollusks from the Hoindzhinskaya suite of Hoindzho Cape, developed in Western Sakhalin, have been studied.Their living conditions have been reconstructed. Their Late Oligocene – Early Miocene age has been established by means of their comparison with malacofaunae of the Northwest Pacific. The proposed suggestion is that the fauna-bearing layers of the Hoindzhinskaya suite from the western Sakhalin and the flora-abundant layers of the mainland near Siziman Bay in the Southern Far East belong to the very close stratigraphic level of the Late Oligocene – Early Miocene. The data obtained allows broadening and clarifying the previous views on the Paleogene–Neogene boundary position for the Southern Far East Russia.
