| Ref ID: | 28391 |
|---|---|
| Ref Type: | Journal Article |
| Authors: | Tapponnier, P. Lacassin, R. Leloup, P. H. Schärer, U. Dalai, Zhong Haiwei, Wu Xiaohan, Liu Shaocheng, Ji Lianshang, Zhang Jiayou, Zhong |
| Title: | The Ailao Shan/Red River metamorphic belt: tertiary left-lateral shear between Indochina and South China |
| Date: | 1990 |
| Source: | Nature |
| DOI: | 10.1038/343431a0 |
| Abstract: | The relative importance of thickening and strike-slip extrusion in continental collision is debated. Ductile shear in the Ailao Shan/Diancang Shan metamorphic belt, along the Red River in Yunnan, China, yields outstanding evidence of the latter process. For > 500 km, mylonites in this narrow northwest-southeast belt show horizontal lineations on steep, northwest-striking foliation planes, and left-lateral kinematic indicators. UPb radiometric ages of ~23 Myr imply that strike-slip movement along this shear zone occurred in the Oligo-Miocene. The strain observed suggests that collision of India with Asia displaced Indochina at least 500km southeastwards relative to South China. |
| Date Created: | 2/21/2012 |
| Volume: | 343 |
| Page Start: | 431 |
| Page End: | 437 |