Abstract
A complex method is suggested for the study of surfaces of sand grains. With this method, middle- and late Pleistocene loess-palaeosol sequences of the Russian Plain, Dnieper Basin, were studied. Surface texture of grains pointed to a dry and cold climate for their formation. During deposition of loess layers predominantly aeolian and cryogenic processes formed the grain surfaces. During interglacial and interstadial periods chemical weathering dominated.
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