期刊论文

Apatite Fission Track Evidence on the Uplifting of Eastern Kunlun Mountains

中文

原子能科学技术

Atomic Energy Science and Technology

1000-6931

2004

38

2

166-168

10.3969/j.issn.1000-6931.2004.02.015

国家自然科学基金资助项目 (4 0 0 72 0 6 8,10 175 0 76 )； 中国科学院重点实验室基金资助项目 (99 775 )；

本校为其他机构

对东昆仑山东段都兰-布青山近南北向剖面采集样品进行了磷灰石裂变径迹分析.所获得的41件磷灰石裂变径迹年龄变化介于25～130 Ma之间,均低于其岩石形成年龄.昆北区和昆中区有着类似的演化趋势,即裂变径迹年龄随高程的增加而缓慢减小,平均隆升速率仅为2.22 m/Ma.与之不同,昆南区裂变径迹年龄与高程呈正比,变化率为11 m/Ma.昆南断裂带两侧地区截然相反的演化关系表明,昆南断裂带在进入陆内演化后所起的作用比昆中断裂带更为重要.

A series of samples were collected from about south-north section through Buqingshan and Dulan, eastern Kunlun mountains, China. The 41 apatite fission track ages(FTA) of these samples lie between 25.2 and 130.4 Ma, all of the apatite fission track ages are significantly younger than the host rocks. There are similar evolution trends for Middle-Kunlun zone and North-Kunlun zone, i.e. the FTA becomes less with slow increase of elevations and their uplifting rates are about 2.22 m/Ma. Differently, the FTA in South-Kunlun zone positively correlates to elevation, decreasing 11 m/Ma. It may be show...