QUATERNARY GLACIATION IN MUSHITAGE MOUNTAIN, NORTHWESTERN BORDER OF TIBET PLATEAU

Mushitage, with the highest peak over 7500m, is located in the western border of Tibetan Plateau. The presence of Quaternary glaciation was reported by Cui Zhijiu (1960). But the times and periods of the past glaciations were largely unknown. We observed series of the end moraines and lateral moraines in the field in the summer of 2002. Samples were collected and date, using the techniques of electron spinning resonance (ESR) and accelerating mass spectrometry (AMS). The results show that the four periods of ancient glaciations were present since the Last Glaciation.