气候变化领域集成服务门户(CCPortal): Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China

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DOI	10.1007/s11069-021-04555-6
	Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China
	He K.; Ma G.; Hu X.
发表日期	2021
ISSN	0921030X
起始页码	2575
结束页码	2597
卷号	106 期号:3
英文摘要	To comprehensively investigate formation mechanisms of tectonic-related basalt landslides in the Yanyuan County in China, the Boli ancient landslide was studied. Its morphological, geomechanical, and structural features were determined to reconstruct its evolution process. Field investigations, remote sensing imagery interpretation, and topographical analyses were conducted to assess the tectonic constraints, influencing factors, and clarify the structural, geological, and geomorphological context. The inherited tectonic brittle features involving faults and joint sets determine the location, geometrical properties, and failure process of the landslide. The Maijiaping thrust fault that cuts through the landslide area was demonstrated as the major controlling factor in the landslide’s evolution. The ductile tectonic features, the sedimentary rock intercalations, created the basal sliding surface of the landslide, as it has weaker mechanical properties with hydrophilic content when compared with the surrounding hard basaltic rock mass. Thus, a landslide-prone structure formed in the basalt slope. The conceptual evolution model was divided into five geological historical stages: (1) fold movement, (2) early fault formation, (3) relief generation, (4) landslide occurrence, and (5) recent deformation. Tectonic features and the steep relief resulting from the historical tectonic activities played important internal roles in bringing the basalt slope to final catastrophic failure. The Boli ancient landslide provides a crucial case study for evaluating landslides in an active tectonic zone in which structural plane geometries, weak intercalations, high-relief, and steep topography combine to create significant mass movement during large tectonic activities. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.
关键词	Basalt Fault Formation mechanism Giant ancient landslide Tectonic feature
英文关键词	basalt; brittle deformation; fault geometry; formation mechanism; geomechanics; geomorphological response; landslide; mass movement; reconstruction; remote sensing; satellite imagery; slope failure; tectonic evolution; tectonic setting; thrust fault; China; Sichuan; Yanyuan
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206269
作者单位	Faculty of Geoscience and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
推荐引用方式 GB/T 7714	He K.,Ma G.,Hu X.. Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China[J],2021,106(3).
APA	He K.,Ma G.,&Hu X..(2021).Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China.Natural Hazards,106(3).
MLA	He K.,et al."Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China".Natural Hazards 106.3(2021).