地测证据表明,阿尔廷塔赫断层系统的滑动率较低
1CIRES & Department of Geological Sciences, University of Colorado, Boulder 80309-0399, USA.
Nature
|March 15, 2000
概括
地测数据揭示了阿尔廷塔赫断层系统的存在.
科学领域:
- 地质物理学 地质物理学
- 构造学 构造学 构造学 构造学
- 地质测量是指地质测量.
背景情况:
- 印度-亚洲碰撞驱动整个东亚的变形.
- 阿尔廷塔格断层系统的活动受到争论,地质估计范围广泛.
- 之前的模型与其在适应印度-亚洲融合中的作用存在冲突.
研究的目的:
- 为了量化整个阿尔廷塔赫断层系统的滑动率和收缩.
- 将地质测量测量与地质和动态模型预测进行比较.
- 评估阿尔廷塔赫断层系统对亚洲变形的贡献.
主要方法:
- 在Altyn Tagh断层系统 (89-91°E) 进行地质测量.
- 分析左侧剪切和南北收缩.
- 与现有的地质滑坡率估计和动态模型进行比较.
主要成果:
- 在Altyn Tagh断层系统中,左侧切割幅度为9 ± 5 mm yr-1.
- 在Altyn Tagh断层系统中收缩3 ± 1mm yr−1.
- 西藏的南北收缩在90°E的9 ± 1毫米年−1.
结论:
- 地测数据表明,阿尔廷塔赫断层系统的滑动率低于一些地质估计.
- 测量的变形支持来自亚洲构造学动态模型的预测.
- 阿尔廷塔格断层系统容纳的印度-亚洲汇合的部分比以前的一些研究所建议的要小.
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