Geomorphological analysis of placers formation at middle mountains

Abstract

In middle mountains with dissected topography when erosion opens metalliferous deposits it can be easily traced by geomorphic levels, fixing changes in spatial relations of valleys to metal sources. Most important tasks of special geomorphological analysis are discussed using as a case study the Ippata-Merek region (Bureya Ridge) with tin-tungsten ores. The tasks are defines as follows: to study primary ore-bearing rocks in relation to paleo-surfaces of different age, to distinguish stages of erosion, to define manifestations of hypogenous zonation of ore-bearing rocks in the placers composition and location.