Palaeolake evolution and abrupt climate changes during last glacial periodin NW China

Field investigations and laboratory analyses show that there existed long-l asting and extensive palaolakes between 18,000 and 42,000 yr B.P. in the Te ngger Desert, NW China. This palaolake phase developed in a mild humid-warm climate that was very different from that of present. Geochemical data, pa lynological evidence and grain size variations demonstrate that the lake le vels had fluctuated greatly with the climate changes and these fluctuations can be correlated with the Dansgaard-Oeschger and Heinrich events.