藏南伸展拆离系聂拉木一带构造抬升的热年代学证据

被引:13
作者
王瑜
万景林
李大明
李齐
曲国胜
机构
[1] 中国地震局地质研究所
[2] 中国地震局地质研究所 北京
[3] 北京
关键词
西藏南部; 热年代学; 构造抬升;
D O I
暂无
中图分类号
P597 [同位素地质学与地质年代学];
学科分类号
070902 ;
摘要
在野外构造填图的基础上 ,采集藏南伸展拆离系 (STDS)断层面及断层下盘的糜棱岩及花岗岩进行了初步研究 ,获得糜棱岩中白云母单矿物Ar Ar坪年龄为 15 .6Ma ,磷灰石裂变径迹测年得到 9~ 11.7Ma ,MDD模式处理获得 12Ma以来的抬升速率为 5 3℃ Ma。热年代测试结果表明 ,喜马拉雅山体北侧地区在伸展作用形成后发生了快速的抬升。
引用
收藏
页码:292 / 294
页数:3
相关论文
共 8 条
[1]  
Relationship between leucogranites and the Qomolangma detachment in the Rongbuk Valley, South Tibet. Murphy M A,Harrison T M. The Journal of Geology . 1999
[2]  
When did the roof collapse? Late Miocene north-south extension in the high Himalaya revealed by Th-Pb monazite dating of the Khula Kangri granite. Edwards M A,Harrison T M. The Journal of Geology . 1997
[3]  
Rapid Pliocene exhumation in the Karakoram (Pakistan), revealed by fission-track thermochronology of the K2 gneiss. Foster D A,Gleadow A J W,Mortimer G. The Journal of Geology . 1994
[4]  
The south Tibetan detachment system, Himalayan orogen: Extension contemporaneous with and parallel to shortening in a collisional mountain belt. Burchfiel B C,Chen Z L,Hodges K V,et al. Special Papers Geological Society of America . 1992
[5]  
North-south extension within the convergent Himalayan region. Burchfiel B C,Royden L H. The Journal of Geology . 1985
[6]  
Evolution of the kangmar Dome, southern Tibet: structural, petrologic, and thermochronologic constraints. Lee J,Hacker B R,Dinklage W S,et al. Tectonics . 2000
[7]  
Yadong cross structure and South Tibetan detachment in the east central Himalaya (89~ 90°E). Wu C,Nelson K D,Wortman G,et al. Tectonics . 1998
[8]  
Tectonics and structural zonation of southern Tibet, China. Burg J P,Chen G M. Nature . 1984