Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Geological Bulletin of China》 2007-10
Add to Favorite Get Latest Update

On the timing of India-Asia continental collision.

MO Xuan-xue1, ZHAO Zhi-dan1, ZHOU Su1, DONG Guo-chen1, LIAO Zhong-li2 1. State Key Laboratory of Geological Processes and Mineral Resources, and School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;2. Chengdu Institute of Geology and Mineral Resources, Ministry of Land and Resources, Chengdu 610082, Sichuan, China  
Indo-Asian continental collision is one of the most important geological events in recent earth′s history. However, it is still highly debated for the timing of initiation of Indo-Asian collision. The discrepancy lies between the idea of late Cretaceous(~70 Ma)and that of E2/E3 boundary(~34Ma). The authors believe that Indo-Asian continental collision started at c.65 Ma and completed by 45/40 Ma according to multi-evidences, especially a huge regional angular unconformity between the Paleogene Linzizong volcanic strata(40.84~64.47 Ma)and the underlain Permian-upper Cretaceous strata,extending for more than 1500 km long over the entire Gangdese belt. There are dramatic changes in sedimentary facies, and the style and intensity of deformation across the unconformity. The coeval syncollisional granitoids in southern Gangdese including the Quxu granite batholith (47-52.5 Ma, with a peak at 50 Ma)and muscovite-bearing granites (56-50 Ma), as well as the stratigraphy, paleontology and sedimentology in southern Tibet, also support this idea.
【Fund】: 国家重点基础研究计划项目(编号:G1998040800、2002CB41260);; 国家自然科学基金项目(编号:40172025、40103003、40473020、40572048、40672044、49772107和49802005);; 国土资源部青藏高原重点研究计划项目(编号:2003009);; 中国地质调查局工作项目《青藏高原岩浆岩与大陆碰撞过程综合研究》(编号:1212010610104)
【CateGory Index】: P542
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved