Geologic-geomorphologic development of Pritumanganie (the southern part of Far East) during Cenozoic period and its coal-bearing properties

Abstract

Geological-geomorphological development of Tumangan river basin during Cenozoic period may be divided into four stages: Paleocene-Eocene, Eocene-Oligocene; Miocene and Pliocene-Quaternary. All stages had similar consequences of events: fracture effusion of basalt, terrigenous sedimentation, effusion of acid/intermediate lavas, stratigraphic discontinuations. Coal accumulation happened in Eocene and Miocene. In Late Pliocene-Quaternary time the sedimentation stopped, the basin of Japan Sea expanded, differentiated tectonic movements took place and three geomorphological levels were formed.