Apatite fission track dating and thermal history of Qing-He Region in Altay Mountains

BAO Zengkuan1; 2 YUAN Wanming1 DONG Jinquan1 GAO Shaokai1 1

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Apatite fission track dating and thermal history of Qing-He Region in Altay Mountains

更新时间：2021-03-12

- Apatite fission track dating and thermal history of Qing-He Region in Altay Mountains
- NUCLEAR TECHNIQUES Issue 9, (2005)
- 作者机构：
  
  1. 中国科学院高能物理研究所
  2. 中国科学院高能物理研究所北京100049 中国科学院研究生院北京,100049
  3. ,北京,100049
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(40072068,10175076,10475093);国家重点基础研究发展规划项目(2001CB409804)
- DOI：
  CLC： P597.3;P314.1
- Published：01 September 2005
- 稿件说明：
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[1]保增宽,袁万明,董金泉,高绍凯.磷灰石裂变径迹法研究阿尔泰青河地区地质热历史[J].核技术,2005(09):722-725.

BAO Zengkuan1, 2 YUAN Wanming1 DONG Jinquan1 GAO Shaokai1 1. Apatite fission track dating and thermal history of Qing-He Region in Altay Mountains[J]. Nuclear techniques, 2005, (9): 722-725.
[1]保增宽,袁万明,董金泉,高绍凯.磷灰石裂变径迹法研究阿尔泰青河地区地质热历史[J].核技术,2005(09):722-725. DOI：

BAO Zengkuan1, 2 YUAN Wanming1 DONG Jinquan1 GAO Shaokai1 1. Apatite fission track dating and thermal history of Qing-He Region in Altay Mountains[J]. Nuclear techniques, 2005, (9): 722-725. DOI：

摘要

对阿尔泰青河县城附近的闪长岩岩体进行了磷灰石裂变径迹研究

并探讨了该区的地质热历史。裂变径迹年龄为（78±5）—（95±5）Ma

平均径迹长度为（13.2±1.2）—（13.5±1.3）μm。热历史模拟结果表明

阿尔泰青河地区具有4阶段的热演化模式

其中115—85Ma的快速冷却阶段反映了该地区在燕山期仍然存在着岩浆侵入活动和断裂带构造运动。

Abstract

Fission track ages (FTA) and track lengths of apatite from Qing-He diorite intrusion in Altay Mountains are measured. Apatite fission track ages of three diorite samples is range from (78±5) Ma to (95±5) Ma

and the lengths of horizontal confined spontaneous fission tracks are (13.2±1.2)—(13.5±1.3) μm. The distribution of the track length is narrow and symmetrical with a mean length of approximately 13.3 μm and a standard deviation of around 0.1 μm. The inverse modeling results show that thermal history of this region has four stages

two rapid uplift stages and two stable ones. The rapid uplift during the 115—85 Ma with the cooling rate of 2.2 ℃/ Ma suggests that this region still existed magmatic intrusion and tectonic movements in Yanshanian.

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