Late Miocene paleo-seismic events and tectonic responses of the western Qinling Mountains recorded in aeolian deposits

doi:10.1007/s11430-024-1559-8

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	Late Miocene paleo-seismic events and tectonic responses of the western Qinling Mountains recorded in aeolian deposits
	Chen, Long 1,2; Guo, Zhengtang 1,2; Zhou, Xin 3; Ge, Junyi 2,4; Chen, Chaoqin 1,2; He, Zhilin 1
	2025-05-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
ISSN	1674-7313
卷号	68 期号:5 页码:1599-1611
通讯作者	Guo, Zhengtang(ztguo@mail.iggcas.ac.cn)
摘要	Seismogenic structures and sequences preserved in sediments are important archives of paleo-seismic events and regional tectonism. However, investigations of such features have been limited in pre-Quaternary aeolian deposits. Here sedimentological analysis of the 8.3-7.0 Ma interval in Neogene aeolian deposits in the Xihe Basin, western Qinling Mountains, identified multiple layers characterized by abrupt inputs of sandy gravels. These gravel clasts were derived from bedrock in piedmont zones and exhibit subaerial depositional features without significant involvement of flowing water, suggesting earthquake-triggered collapse and landslide due to active tectonism. At least eight paleo-seismic events were identified in the section, which can be clustered into six seismic episodes that occurred predominantly in two stages (8.3-8.0 and 7.6-7.0 Ma). This paleo-seismic record indicates that the western Qinling Mountains experienced a tectonically active phase during 8.3-7.0 Ma in response to the expansion and uplift of the northeastern Tibetan Plateau, which occurred in a two-stage, multiepisode deformation process. The well-preserved aeolian sequences with minimal erosion and deformation imply that there were no significant changes in topography due to uplift in the western Qinling Mountains during this period. Our findings highlight the significance of aeolian deposits in reconstructing paleo-seismic activities and deciphering intricate regional tectonism.
关键词	Paleo-seismic events Late Miocene Aeolian deposit Western Qinling Mountains Tectonism Northeastern Tibetan Plateau
DOI	10.1007/s11430-024-1559-8
关键词[WOS]	SEISMOGENIC MECHANISM ; ACTIVE TECTONICS ; TIBETAN PLATEAU ; FAULT ; EARTHQUAKE ; CHINA ; DEFORMATION ; EXHUMATION ; SEQUENCE ; BASIN
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42488201] ; Second Tibetan Plateau Scientific Expedition and Research Program[2024QZKK0301]
项目资助者	National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001473718300001
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24754
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Guo, Zhengtang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher & Environm Coevolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Chen, Long,Guo, Zhengtang,Zhou, Xin,et al. Late Miocene paleo-seismic events and tectonic responses of the western Qinling Mountains recorded in aeolian deposits[J]. SCIENCE CHINA-EARTH SCIENCES,2025,68(5):1599-1611.
APA	Chen, Long,Guo, Zhengtang,Zhou, Xin,Ge, Junyi,Chen, Chaoqin,&He, Zhilin.(2025).Late Miocene paleo-seismic events and tectonic responses of the western Qinling Mountains recorded in aeolian deposits.SCIENCE CHINA-EARTH SCIENCES,68(5),1599-1611.
MLA	Chen, Long,et al."Late Miocene paleo-seismic events and tectonic responses of the western Qinling Mountains recorded in aeolian deposits".SCIENCE CHINA-EARTH SCIENCES 68.5(2025):1599-1611.