LATE MESOZOIC GRANITOIDS OF AURIFEROUS DISTRICTS IN THE UPPER AMUR REGION: NEW GEOCHEMICAL DATA

Abstract

Geotectonic reconstructions and the Rb-Hf-Ta relationship data on granitoids suggest that granitoids of the upper Amur region are products of the collision of the Amur Superterrane with the Siberian Craton. Late Jurassic-Early Cretaceous intrusive rocks of the region are members of a single intracontinental volcanoplutonic belt.