These data show that the Darhad sedimentary
sequence has been formed since the Pliocene and represents a detailed archive of environmental
changes due to a high content of lacustrine beds. Lakes formed several times in the Darhad Basin
by basaltic, glacial and sedimentary dams, which blocked the water outlet of the basin. Of special interest
in this paper are the late Pleistocene damming events, which are well-documented in the sediments and
landforms, however, their chronology is still obscure. There have been two stages of deep lake.