Composition and formation settings of cretaceous terrigenous rocks of the West Sakhalin terrane

Abstract

The source areas and formation settings of Cretaceous rocks of the West Sakhalin terrane are established on the basis of the composition of terrigenous rocks. Sedimentation along the continent–ocean boundary was accompanied by large-scale left-side transform slides of the Izanagi Plate relative to the Eurasian continent with a minor role of volcanic processes. The ensialic island arc, granite-metamorphic rocks of the mature continental margin, and fragments of ancient accretionary prisms with ophiolites and cherts were the sources of clastic material.