DOI: 10.1016/j.tecto.2021.228992
论文题名: Geomechanical modelling of fault-propagation folds: Estimating the influence of the internal friction angle and friction coefficient
作者: Khalifeh-Soltani A. ; Alavi S.A. ; Ghassemi M.R. ; Ganjiani M.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 815 语种: 英语
中文关键词: Fault slip and uplift gradients
; Fault-propagation folding
; Friction coefficient
; Geomechanical modelling
; Internal friction angle
英文关键词: Elastoplasticity
; Fault slips
; Petroleum prospecting
; Seismology
; Elastic-plastic finite element model
; Exploration and exploitation
; Fault-propagation folds
; Friction coefficients
; Hydrocarbon resources
; Internal friction angle
; Seismic data interpretations
; Structural evolution
; Internal friction
英文摘要: The interplay between faulting and folding mechanisms has been recognised in extensional and contractional settings. Numerous investigations have documented that the analysis of structural aspects of fault-related folds is important for the exploration and exploitation of hydrocarbon resources and in seismic data interpretation. In this study, we used four series of 2-D elastic-plastic finite element models (A, B, C, and D) to investigate the influence of internal friction angle, friction coefficient, and an additional detachment on the fault slip and uplift gradients, stress-strain patterns, and structural evolution of fault-propagation folds (FPFs). We found that: 1) the stress-strain patterns are similar in different sections of a FPF; 2) the plastic strain is concentrated at the fault tip, fault surface, and forelimb of the FPF; 3) among the internal friction angle, friction coefficient, and additional detachment parameters, only additional detachment affects the stress-strain patterns at the crest and backlimb of the FPF; 4) to create a FPF, not only must the fault friction be less than the layers, but the layer friction also has to be less than a threshold; 5) increase in the internal friction angle, decrease in the friction coefficient, and generation of an additional detachment lead to the formation of tight folds whereas, decrease in the internal friction angle and increase in the friction coefficient create wide folds; and 6) the internal friction angle and friction coefficient are two key factors of the fault-related fold style. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170829
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Sedimentary and Oil Basins, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran; Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran; School of Geology, College of Science, University of Tehran, Tehran, Iran; Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Recommended Citation:
Khalifeh-Soltani A.,Alavi S.A.,Ghassemi M.R.,et al. Geomechanical modelling of fault-propagation folds: Estimating the influence of the internal friction angle and friction coefficient[J]. Tectonophysics,2021-01-01,815