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| 藏南江孜盆地构造演化的石英ESR测年证据 | |
| 引用本文： | 李生伟,秦松贤,刘强,向树元.藏南江孜盆地构造演化的石英ESR测年证据[J].地质科技情报,2010,29(5). |
| 作者姓名： | 李生伟 秦松贤 刘强 向树元 |
| 作者单位： | 1. 青海大学地质丁程系,西宁,810016;中国地质大学,武汉,430074 2. 中国地质大学,武汉,430074 3. 中国地质大学,武汉,430074;地球科学学院,武汉,430074 |
| 基金项目： | 地质过程与矿产资源国家重点实验室开放课题 |
| 摘 要： | 江孜盆地是特提斯喜马拉雅构造带北部典型的中新生代沉积盆地。对该盆地东段构造剖面(哲古错-措美南)的石英脉进行ESR测年,获得的年龄分布区间为63.8～4.3Ma,对应于古新世早期-上新世早期。测年结果对于江孜盆地断裂活动的多期性及盆地新生代的构造演化具有重要约束意义,表明江孜盆地的构造演化可划分为盆地主体构造形成(古新世初期)、构造定型(始新世晚期—中新世晚期)和构造改造(上新世及之后)3个主要阶段。 |
| 关 键 词： | ESR测年 构造演化 新生代 江孜盆地 |
Tectonic Evolution of Gyangze Basin,Southern Tibet:Evidence from ESR Dating |
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| LI Sheng-wei,QIN Song-xian,LIU Qiang,XIANG Shu-yuan.Tectonic Evolution of Gyangze Basin,Southern Tibet:Evidence from ESR Dating[J].Geological Science and Technology Information,2010,29(5). | |
| Authors: | LI Sheng-wei QIN Song-xian LIU Qiang XIANG Shu-yuan |
| Institution: | LI Sheng-wei1,2a,QIN Song-xian2a,LIU Qiang2a,2b,XIANG Shu-yuan2a (1.Department of Geological Engineering,Qinghai University,Xining 810016,China,2a.Faculty of Earth Sciences,2b.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China) |
| Abstract: | Gyangze Basin is one of the typical Mesozoic-Cenozoic sedimentary basins in the northern Tethys-Himalayas tectonic belt.In this paper,electronic spin resonance(ESR)method was used to date the quartz vein from Zhegu Lake-Cuomei South structural profile in the east of Gyangze Basin in order to con-strain the stages of fracturing activities and Cenozoic structural evolution in the basin.Based on the ob-tained ages of 63.8Ma to 4.3Ma,the structural evolution of the basin can be subdivided into three stages: str... |
| Keywords: | ESR dating tectonic evolution Cenozoic Gyangze Basin |
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