THE UPLIFTING AND ENVIRONMENTAL-CHANGE OF QINGHAI-XIZANG (TIBETAN) PLATEAU IN THE PAST 0.9 MA INFERRED FROM CORE RM OF ZOIGE BASIN

According to the synthetic multi-disciplinary study on the lake sedime nts from core RM of Zoige Basin, i.e. the deepest wholly-collected cor e in Tibetan Plateau, the palaeoclimate and palaeoenvironment for the basin in the past 0.9 Ma have been reconstructed. The analytical resul ts suggest that there distinctively exist 3 accelerated uplifting peri ods for the east Plateau in the past 0.9 Ma, i.e. 800, 360 and 160 kaB .P., with the study on the sedimentary characteristics, the texture of sedimentary cycles and variations of depositional rates, in conjuncti on with the environment features of cold/warm to dry/wet combination. The paper also probes into the environmental effect under the 3 accele rated tectonic-upliftings on the background of global change.