气候变化领域集成服务门户(CCPortal): Basin response of muti-stage tectonic uplift of the Longshoushan area since the Late Cenozoic in northeastern margin of the Qinghai-Tibet Plateau

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DOI	10.18654/1000-0569/2023.12.14
	Basin response of muti-stage tectonic uplift of the Longshoushan area since the Late Cenozoic in northeastern margin of the Qinghai-Tibet Plateau
	Zhao Di; Chen Peng; Li RongXi; Wu XiaoLi; Liu XiaoBo
发表日期	2023
ISSN	1000-0569
EISSN	2095-8927
起始页码	3759
结束页码	3774
卷号	39 期号:12
英文摘要	The Longshoushan region is located at the conjunction area of the Qinghai-Tibet Plateau and the Alxa Block, and the reconstruction of its basin-mountain evolution process and fault zone expansion model is of importance in understanding the northeastward growth of the Qinghai-Tibet Plateau since Late Cenozoic. Based on the structural characteristics of three Neogene sedimentary profiles on the northern and southern flanks of the Longshoushan and the zircon U-Pb ages of five sandstone samples from these profiles, the Late Cenozoic basin-mountain processes of the Longshoushan region were reconstructed. Three-stage evolution is suggested as follows: (1) At similar to 14Ma, the South Longshoushan Fault was activated, resulting in the thrusting of the Alxa Block upon the Zhangye Basin, and the latter began to receive source materials from the former. (2) At similar to 5Ma, with the expansion of the South Longshoushan Fault, the Cretaceous formations in the southern flank of the Longshoushan were exhumated and thus provided materials for the Zhangye Basin. Meanwhile, the Chaoshui Basin on the northern flank of the Longshoushan occurred flexural subsidence due to the activation of the North Longshoushan Fault, and thus received sediments from the Longshoushan as well. (3) During 5 similar to 2.5Ma, the continuous thrusting of the North Longshoushan Fault resulted in the uplift and denudation of the Cretaceous formations, and these strata became the sources for the Chaoshui Basin. The results from studies on sedimentary facies and provenance analysis of the Cenozoic strata indicate that the Longshoushan area had undergone a three-stage uplift during 14 similar to 2.5Ma associated with the thrusting and expansion of the North and South Longshoushan faults, as responding to the ongoing northeastward shortening of the plateau to accommodate the Eurasia-India continental collision.
关键词	Northeastern margin of the Qinghai-Tibet Plateau Longshoushan area Late Cenozoic Zircon U-Pb age Basin-mountain evolution
英文关键词	APATITE FISSION-TRACK; WESTERN HEXI CORRIDOR; NORTHERN QILIAN SHAN; OROGENIC BELT; STRIKE-SLIP; GROWTH; CHINA; EVOLUTION; MAGNETOSTRATIGRAPHY; MANTLE
WOS研究方向	Geology
WOS记录号	WOS:001152994000014
来源期刊	ACTA PETROLOGICA SINICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282911
作者单位	Chang'an University; China Geological Survey; Institute of Geomechanics, Chinese Academy of Geological Sciences; Chinese Academy of Geological Sciences
推荐引用方式 GB/T 7714	Zhao Di,Chen Peng,Li RongXi,et al. Basin response of muti-stage tectonic uplift of the Longshoushan area since the Late Cenozoic in northeastern margin of the Qinghai-Tibet Plateau[J],2023,39(12).
APA	Zhao Di,Chen Peng,Li RongXi,Wu XiaoLi,&Liu XiaoBo.(2023).Basin response of muti-stage tectonic uplift of the Longshoushan area since the Late Cenozoic in northeastern margin of the Qinghai-Tibet Plateau.ACTA PETROLOGICA SINICA,39(12).
MLA	Zhao Di,et al."Basin response of muti-stage tectonic uplift of the Longshoushan area since the Late Cenozoic in northeastern margin of the Qinghai-Tibet Plateau".ACTA PETROLOGICA SINICA 39.12(2023).