Surficial Moraine

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Surficial Moraine

 

detrital material on the surface of a glacier. It is formed by rock fragments that fall from valley walls onto the glacier and by rocks thawed out from the glacier itself.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.