Shorelines and lake sediments indicate that a lake filled the Darhad depression at least once. Lacustrine modification may be responsible for the differing outer moraine morphologies. Evidence for periglacial processes is found as patterned ground. Wind has used the abundant supply of lacustrine and glacial sediments to deposit large parabolic dunes. The Jarai Gol incised the moraine complexes, leaving terraces.
Oversteepened slopes enhance mass wasting of incompetent lakebeds.