Abstract
AbstractSeveral rimmed depressions of different size, filled with lakes or bogs, occur within the glaciofluvial lowlands of the Moscow region, in the central part of the East European Plain. One such depression, at Krasnoye lake, has a diameter of 300 m and a maximal depth of 9 m. The rim is 2– 5 m high. The sedimentary deposits of the rim, observed in several pits, consist mostly of sand with inclusions of loamy sand, loam and clay. They have a lumpy structure with weak and irregular layering and are underlain by fluvial sand of the third terrace of the Moscow River with clear horizontal bedding. The rim deposits are interpreted to be of a slope type and probably formed due to slumping and washout from the slopes of a large pingo which existed here in the cold epoch of the Upper Pleistocene. The rims surrounding some other depressions in the Moscow region, however, have quite different structures, which suggests that their genesis may be different. Copyright © 2015 John Wiley & Sons, Ltd.
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