SIGNIFICANCE OF MODERN RIVER VALLEYS FORMATION FOR PLACER GEOLOGY

G. A. Postolenko

doi:10.15356/0435-4281-2013-3-11-23

SIGNIFICANCE OF MODERN RIVER VALLEYS FORMATION FOR PLACER GEOLOGY

G. A. Postolenko

https://doi.org/10.15356/0435-4281-2013-3-11-23

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Abstract

The modern plain and mountain river valleys had the maximum depth at the beginning of Quaternary. Buried alluvium in the valleys occurs at different depth and is in different states of preservation due to Quaternary intra-valley alterations. But placer mineral content is richest in the most ancient alluvium. That is why the quaternary valley history and the state of preservation of buried alluvium play an important role in the heavy mineral placers prospecting.

Keywords

river valleys, landscape-climatic conditions, Quaternary period, erosion cycles, alluvium, formation chronology, placement regularities, placer geology, autochthonous placers

About the Author

G. A. Postolenko

Moscow State University, Geographical Department, Moscow
Russian Federation

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Review

For citations:

Postolenko G.A. SIGNIFICANCE OF MODERN RIVER VALLEYS FORMATION FOR PLACER GEOLOGY. Geomorfologiya. 2013;(3):11-23. (In Russ.) https://doi.org/10.15356/0435-4281-2013-3-11-23