气候变化领域集成服务门户(CCPortal): Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau

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DOI	10.3389/feart.2022.895530
	Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau
	Zhang, Yang; Feng, Qingda; Li, Fucheng; Zhang, Linyou; Zhang, Chao; Zhang, Senqi; Li, Dunpeng; Yan, Zhen; Song, Jian; Fu, Lei; Niu, Zhaoxuan
发表日期	2023
EISSN	2296-6463
卷号	10
英文摘要	In addition to overall uplift of the Qiabuqia region during the Late Cenozoic, three deformation stages can be identified in the northeastern Qinghai-Tibet Plateau. Specifically, these deformation stages were recognized in areas east of the Gonghe Basin that surrounds Waliguan Mountain and include: 1) Late Miocene to Late Pliocene deformation-dominated by thrust napping with dextral strike-slipping; 2) Early Pleistocene to late middle period of Pleistocene deformation-fault structures were dominated by the dextral strike-slipping with thrust napping; and 3) end of Late Pleistocene to Middle Holocene deformation-thrust napping slowed down and finally braked, while the shallow surface began to loosen and extend at Qiabuqia region's rear-edge. DR4 borehole drilling data indicate that the Xiangshuihe Formation's buried depth is similar to 1,000 m. The Xianshuihe Formation's top section is characterized by normal fault-type (NF) tectonic stress, while the maximum principal tectonic stress (sigma 1) is perpendicular and the minimum principal tectonic stress (sigma 3) is horizontal. In contrast, the deep basement is characterized by thrust fault (TF) and strike-slip (SS) tectonic stress, while the sigma 1 is in the NE-SW direction, ranging from 20.1 degrees to 75.3 degrees with an average of 40.0 degrees. Based on the aforementioned observations, it can be inferred that there are three sets of hidden faults in the basement of the Qiabuqia region: 1) the NW-NNW trending compressional-torsional faults; 2) the NE trending tensional-torsional faults; and 3) the NWW trending compressional-torsional faults. The findings in this study can potentially offer a robust geological basis for exploring and utilizing hot, dry rock resources within the Gonghe Basin.
关键词	thrust nappe strike-slip fault normal fault tectonic stress field hot dry rock Late Cenozoic Gonghe Basin
英文关键词	APATITE FISSION-TRACK; FAULT; EVOLUTION; EXHUMATION; STEPOVERS; RANGE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000918922200001
来源期刊	FRONTIERS IN EARTH SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283734
作者单位	China Geological Survey; Chengdu University of Technology; Fuzhou University; China Geological Survey; Institute of Geology, Chinese Academy of Geological Sciences; Chinese Academy of Geological Sciences
推荐引用方式 GB/T 7714	Zhang, Yang,Feng, Qingda,Li, Fucheng,et al. Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau[J],2023,10.
APA	Zhang, Yang.,Feng, Qingda.,Li, Fucheng.,Zhang, Linyou.,Zhang, Chao.,...&Niu, Zhaoxuan.(2023).Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau.FRONTIERS IN EARTH SCIENCE,10.
MLA	Zhang, Yang,et al."Insights into the late Cenozoic structural deformation and tectonic stress field of the Qiabuqia region, Gonghe Basin, northeastern Qinghai-Tibetan Plateau".FRONTIERS IN EARTH SCIENCE 10(2023).