Fission track dating evidence on tectonic activities   of northern Himalaya block

YUAN Wanming  1  WANG Shicheng  1  YANG Zhiqiang  2  WANG Lanfen  1  1

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Fission track dating evidence on tectonic activities of northern Himalaya block

更新时间：2021-03-12

- Fission track dating evidence on tectonic activities of northern Himalaya block
- NUCLEAR TECHNIQUES Issue 6, (2002)
- 作者机构：
  
  1. 中国科学院高能物理研究所
  2. 中国石化石油勘探开发研究院
  3. 中国科学院高能物理研究所,北京,100039
  4. ,北京,100083
- 作者简介：
- 基金信息：
  
  国家自然科学基金 (4 0 0 72 0 6 8);中国科学院院长基金 (99- 775 )资助
- DOI：
  CLC： P542;P597
- Published：01 June 2002
- 稿件说明：
移动端阅览
[1]袁万明,王世成,杨志强,王兰芬.北喜马拉雅带构造活动的裂变径迹定年证据[J].核技术,2002(06):451-454.

YUAN Wanming 1 WANG Shicheng 1 YANG Zhiqiang 2 WANG Lanfen 1 1. Fission track dating evidence on tectonic activities of northern Himalaya block[J]. Nuclear techniques, 2002, (6): 451-454.
[1]袁万明,王世成,杨志强,王兰芬.北喜马拉雅带构造活动的裂变径迹定年证据[J].核技术,2002(06):451-454. DOI：

YUAN Wanming 1 WANG Shicheng 1 YANG Zhiqiang 2 WANG Lanfen 1 1. Fission track dating evidence on tectonic activities of northern Himalaya block[J]. Nuclear techniques, 2002, (6): 451-454. DOI：

摘要

从浪卡子至雅鲁藏布江逆冲带剖面中获得的 4个磷灰石裂变径迹年龄为 13.6— 17.2Ma

记录了区内陆 -陆碰撞的时代

而这恰恰有别于前人的资料。磷灰石裂变径迹年龄与样品高程呈负相关关系

表明陆 -陆碰撞伴随有快速的抬升

其抬升速率为 176m/Ma。 13.6Ma以来的剥蚀量约为 2 .9km

冷却速率和剥蚀速率分别约为 7℃ /Ma和 2 13m/Ma。 3个锆石裂变径迹年龄值相差较大

χ2 检验值约为 0 .1%

证实该区陆内造山作用是在低温状态下进行的。

Abstract

Fission track ages (FTA) of 4 apatite samples collected from Langkazi to Yarlung Zangbo thrust zone range between 13.6 and 17.2 Ma

reflecting the time of continent-continent collision and differing from previous data. The negative correlation between the FTA and sample elevations shows there was rapid uplifting during the continent-continent collision with uplifting rate of 176m/Ma. Denudation degree

denudation rate and cooling rate were ~2.9km

213m/Ma and 7℃/Ma respectively since 13.6Ma. FTA of 3 zircon samples are different significantly and have χ 2 test value of <0.1%

confirming the orogeny within continent went under low temperature.

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