DOI: 10.1007/s11069-021-04555-6
论文题名: Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China
作者: He K. ; Ma G. ; Hu X.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 3 起始页码: 2575
结束页码: 2597
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169068
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
He K.,Ma G.,Hu X.. Formation mechanisms and evolution model of the tectonic-related ancient giant basalt landslide in Yanyuan County, China[J]. Natural Hazards,2021-01-01,106(3)