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DOI | 10.1029/2021GL095413 |
Structure and Stress Field of the Lithosphere Between Pamir and Tarim | |
Bloch, Wasja; Schurr, Bernd; Yuan, Xiaohui; Ratschbacher, Lothar; Reuter, Sanaa; Kufner, Sofia-Katerina; Xu, Qiang; Zhao, Junmeng | |
通讯作者 | Bloch, W (通讯作者) |
发表日期 | 2021 |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
卷号 | 48期号:22 |
英文摘要 | The Pamir plateau protrudes similar to 300 km between the Tajik- and Tarim-basin lithosphere of Central Asia. Whether its salient location and shape are caused by forceful indentation of a promontory of Indian mantle lithosphere is debated. We present a new local-seismicity and focal-mechanism catalog, and a P-wave velocity model of the eastern part of the collision system. The data suggest a south-dipping Asian slab that overturns in its easternmost segment. The largest principal stress at depth acts normal on the slab and is orientated parallel to the plate convergence direction. In front (south) of the Asian slab, a volume of mantle with elevated velocities and lined by weak seismicity constitutes the postulated Indian mantle indenter. We propose that the indenter delaminates and overturns the Asian slab, underthrusts the Tarim lithosphere along a compressive transform boundary, and controls the location and shape of the Pamir plateau. |
关键词 | COLLISIONAL OROGENSEARTHQUAKESUBDUCTIONBENEATHZONETRANSFORMATIONDELAMINATIONTIBETANCRUSTALMODELS |
英文关键词 | continental collision; Pamir; delamination; subduction |
语种 | 英语 |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000723105600025 |
来源期刊 | GEOPHYSICAL RESEARCH LETTERS |
来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/260497 |
推荐引用方式 GB/T 7714 | Bloch, Wasja,Schurr, Bernd,Yuan, Xiaohui,et al. Structure and Stress Field of the Lithosphere Between Pamir and Tarim[J]. 中国科学院青藏高原研究所,2021,48(22). |
APA | Bloch, Wasja.,Schurr, Bernd.,Yuan, Xiaohui.,Ratschbacher, Lothar.,Reuter, Sanaa.,...&Zhao, Junmeng.(2021).Structure and Stress Field of the Lithosphere Between Pamir and Tarim.GEOPHYSICAL RESEARCH LETTERS,48(22). |
MLA | Bloch, Wasja,et al."Structure and Stress Field of the Lithosphere Between Pamir and Tarim".GEOPHYSICAL RESEARCH LETTERS 48.22(2021). |
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