The Khakhinan Ridge relief evolution (Koryak Highiand) and problems of placers formation

Abstract

Stages in the relief evolution of the southern Koryak Highland have been elucidated as a result of structural-geomorphological investigation and sediments studies of the Khakhinan Ridge. Four stages of the relief differentiation and planation have been identified (Early, Middle and l.ate Miocene and Pliocene - Early Pleistocene) as well as the Quaternary cycle of active development of the relief. 6 Stages of general uplift and fluvial erosion are distinguished within the latter. Principal stages of placers formation are also identified.