Contemporary stress state in the Zhao-Ping metallogenic belt,eastern China,and its correlation to regional geological tectonics
Peng Li1
Yan Liu2
Meifeng Cai2
Shengjun Miao2
Yuan Li2
Yunfeng Wu2
Mostafa Gorjian3
1.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China2.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China3.Department of Earth,Ocean and Atmospheric Sciences,University of British Columbia,Vancouver,BC,Canada
摘要：In this article,the contemporary stress state of the Zhao-Ping metallogenic belt in eastern China was revealed using over-coring and hydraulic fracturing stress data,the relation between the stress field and geological tectonics was discussed,and the stability of regional faults under the present-day stress environment was evaluated.The results indicate that the stress level is considerably high,and the distribution of stress intensity is uneven.The stress regime is primarily characterized by σH＞σv＞σh.The σH orientation is well-oriented in the WNW-ESE,which is roughly identical to other stress indica-tors.Moreover,the σH direction reflected by joint strikes and inferred based on the fault characteristics agrees fairly with the identified stress orientation.The modem stress field basically inherited the tectonic stress field of the Yanshanian and Himalayan periods but is principally dominated by the Himalayan period.Additionally,the calculated μm ranges from 0.2 to 0.7,indicating that the possibility of shallow faults across this area being reactivated and experiencing shear failure is small overall under the current stress conditions.μm=0.2 and 0.5 are suggested as the lower and upper limits for predict-ing and analyzing future fault activity in the area,respectively.
机标关键词：correlationregionalstressstatechinabeltcontemporaryeastern
论文发表日期：2025-04-30
在线出版日期：2025-10-15（本平台首次上网日期，不代表文献的发表时间）
页数：25( 220-244 )
英文信息