CLIMATIC VARIATIONS IN THE PAST 140-KA RECORDED IN-CORE RM, EAST QINGHAI-XIZANG PLATEAU

The sequences of climatic evolution are reconstructed by the analyses of delta(13)C and delta(18)O of carbonate from core RM in the Zoige Ba sin since 140 kaB. P. During the Last Glaciation there existed at leas t seven warm climatic fluctuations and five cold events correlated wit h the records of ice core and deep sea, and during the preceding last interglacial period there were two cold climatic variations coinciding with the record of ice core GRIP. These results depict climatic insta bility in east Qinghai-Xizang Plateau over the last interglacial perio d. In addition, the environmental proxies of the carbonate content and pigments indicate the similar results to the stable isotope record fr om core RM.