CHEN Shiyue, JIN Zhangdong, WANG Sumin and SHEN Ji Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu School of Environment and Planning, Liaocheng University, Liaocheng, Shandong Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi .2005. Late Cenozoic Chemical Weathering and Environmental Changes Recorded in the Co Ngoin Sediments, Central Qinghai-Tibet Plateau[J]. ACTA GEOLOGICA SINICA(English edition),79(3):