PALEO-GEOMORPHOLOGICAL INVESTIGATIONS FOR THE PROSPECTING OF GOLD PLACERS IN THE FAR EAST OF RUSSIA (TO THE 100TH ANNIVERSARY OF S.S.VOSKRESENSKY)

In the years 1976-1993 the disciples S.S. Voskresensky according to his ideas made a detailed reconstruction of river valleys evolution history for Western Priokhotje, Lower Amur region and Amur-Zeya plain. It was established that in each climatic epoch, these areas had comprised one landscape type with poor vegetation cover differentiation. The correlation of accumulation and incision stages in valleys with climate continentalization and humidization was found. The stages of river valleys formation during Plio-Pleistocene, including alternation of accumulation and incision, are generally synchronous within the studied region. Processing of transitional Plio-Pleistocene gold-bearing reservoirs produced the most favorable conditions of placers formation. Such conditions existed at the places of inherited river valley development in the mountains and at the places of sugarloaf and caldron topography with minimal value (< 30 m) of erosional downcutting on the plains.

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