STRATIGRAPHY AND PALEOGEOGRAPHY OF THE CARBONIFEROUS AND PERMIAN FORMATIONS OF SIKHOTE-ALIN

Abstract

The region now represented by the Sikhote-Alin range was a geosyncline during the Carboniferous and Permian periods. On the basis of structure and petrology, four zones can be distinguished within the area. These are the Olga-Tetyukhinsk, central Sikhote-Alin, southern-coastal, and Grodekovsk zones. In the Olga-Tetyukhinsk zone, the Permo-Carboniferous section consists of 8, 000 meters of sandstone interbedded with shale, chert, and limestone; and in the central Sikhote-Alin zone, is composed of 14, 000 meters of terrigenous sediments interbedded with basic and intermediate volcanic rocks. In the marginal southern coastal zone, the upper Paleozoic sequence, predominately of continental origin, records repeated uplift and subsidence. An abundant flora indicates continental conditions to have prevailed in the Grodekovsk zone during early Permian time; upper Permian formations are marine, commonly of limestone with interbedded tuff and lava. Translator