The Mesozoic and Cenozoic Exhumation History of Tianshan and Comparative Studies on the Junggar and Altay Mountains GUO Zhaojie, ZHANG Zhicheng, WU Chaodong, FANG Shihu and ZHANG Rui (Key Laboratory of Orogenic Belts and Crustal Evolution (Peking University), Ministry of Education, Beijing 100871) The Tianshan Mountain is a Cenozoic intracontinental orogenic belt. To constrain its deformation history during the Mesozoic and Cenozoic, we conducted integrated research on apat…