Apatite fission track analysis for revealing tectonic evolution of the South-Block in eastern Kunlun Mountains, northern Qinghai-Tibet Plateau

YUAN Wanming1 DONG Jinquan1 WANG Shicheng1 YANG Zhiqiang2 1

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Apatite fission track analysis for revealing tectonic evolution of the South-Block in eastern Kunlun Mountains, northern Qinghai-Tibet Plateau

更新时间：2021-03-12

- Apatite fission track analysis for revealing tectonic evolution of the South-Block in eastern Kunlun Mountains, northern Qinghai-Tibet Plateau
- NUCLEAR TECHNIQUES Issue 9, (2005)
- 作者机构：
  
  1. 中国科学院高能物理研究所核分析技术重点实验室
  2. 中国石油化工股份有限公司石油勘探开发研究院,北京,100049
  3. ,北京,100083
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(10175076、40072068、10475093);国家重点基础研究发展规划项目(编号:2001CB409804)资助
- DOI：
  CLC： P585
- Published：01 September 2005
- 稿件说明：
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[1]袁万明,董金泉,王世成,杨志强.东昆仑南部带磷灰石裂变径迹分析的地质意义[J].核技术,2005(09):707-711.

YUAN Wanming1 DONG Jinquan1 WANG Shicheng1 YANG Zhiqiang2 1. Apatite fission track analysis for revealing tectonic evolution of the South-Block in eastern Kunlun Mountains, northern Qinghai-Tibet Plateau[J]. Nuclear techniques, 2005, (9): 707-711.
[1]袁万明,董金泉,王世成,杨志强.东昆仑南部带磷灰石裂变径迹分析的地质意义[J].核技术,2005(09):707-711. DOI：

YUAN Wanming1 DONG Jinquan1 WANG Shicheng1 YANG Zhiqiang2 1. Apatite fission track analysis for revealing tectonic evolution of the South-Block in eastern Kunlun Mountains, northern Qinghai-Tibet Plateau[J]. Nuclear techniques, 2005, (9): 707-711. DOI：

摘要

通过东昆仑南部带出露的上二叠统地层磷灰石裂变径迹分析

研究区内的构造演化特征。南北向剖面中4个砂岩样品的年龄为（48±3）—（89±8）Ma

径迹长度为（10.7±2.3）—（10.8±2.2）μm。裂变径迹年龄是区内逆冲演化的反映

长度分布体现了在退火带持续较长以及受隆升控制的特点。总体上具有3阶段热演化历史

约107Ma前后发生一次较为快速的冷却隆升作用

继之于约80Ma开始出现相对平静期

然后在6—12Ma进入快速冷却期

冷却速率为5.3—9.8℃/Ma或者106—196m/Ma。

Abstract

The apatite fission track analyses have been performed for total 4 samples collected from upper Permian System sandstone in South-Block of eastern Kunlun Mountains. The ages range from (48±3) Ma to (89±8) Ma

in accord with regional thrusting time

and the confined track lengths are from (10.7±2.3) μm to (10.8±2.2) μm with a single peak value

showing that the samples kept a long time at the annealing zone of apatite fission track and then uplifted rapidly. Three tectonic phases have been revealed in the whole. A comparative cooling occurred from ~107 Ma to ~80 Ma first

following a quiet phase and then a rapid cooling started at 6—12 Ma until now with a cooling speed of 5.3—9.8 ℃/Ma or 106—196 m/Ma.

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