NDLI: Tectonic stress pattern in the Chinese Mainland from the inversion of focal mechanism data

Content Provider	Springer Nature Link
Author	Wei, Ju Weifeng, Sun Xiaojing, Ma
Copyright Year	2017
Abstract	The tectonic stress pattern in the Chinese Mainland and kinematic models have been subjected to much debate. In the past several decades, several tectonic stress maps have been figured out; however, they generally suffer a poor time control. In the present study, 421 focal mechanism data up to January 2010 were compiled from the Global/Harvard CMT catalogue, and 396 of them were grouped into 23 distinct regions in function of geographic proximity. Reduced stress tensors were obtained from formal stress inversion for each region. The results indicated that, in the Chinese Mainland, the directions of maximum principal stress were ∼NE–SW-trending in the northeastern region, ∼NEE–SWW-trending in the North China region, ∼N–S-trending in western Xinjiang, southern Tibet and the southern Yunnan region, ∼NNE–SSW-trending in the northern Tibet and Qinghai region, ∼NW–SE-trending in Gansu region, and ∼E–W-trending in the western Sichuan region. The average tectonic stress regime was strike-slip faulting (SS) in the eastern Chinese Mainland and northern Tibet region, normal faulting (NF) in the southern Tibet, western Xinjiang and Yunnan region, and thrust faulting (TF) in most regions of Xinjiang, Qinghai and Gansu. The results of the present study combined with GPS velocities in the Chinese Mainland supported and could provide new insights into previous tectonic models (e.g., the extrusion model). From the perspective of tectonics, the mutual actions among the Eurasian plate, Pacific plate and Indian plate caused the present-day tectonic stress field in the Chinese Mainland.
Starting Page	1
Ending Page	22
Page Count	22
File Format	PDF
ISSN	02534126
Journal	Journal of Earth System Science
Volume Number	126
Issue Number	3
e-ISSN	0973774X
Language	English
Publisher	Springer India
Publisher Date	2017-04-04
Publisher Institution	Indian Academy of Sciences
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Tectonic stress pattern focal mechanism Chinese Mainland stress regime driving force. Earth Sciences Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)
Content Type	Text
Resource Type	Article
Subject	1900/1901

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