DOI: 10.1016/j.earscirev.2021.103523
论文题名: Variability in the three-dimensional geometry of segmented normal fault surfaces
作者: Roche V. ; Camanni G. ; Childs C. ; Manzocchi T. ; Walsh J. ; Conneally J. ; Saqab M.M. ; Delogkos E.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2021
卷: 216 语种: 英语
中文关键词: 3D fault geometry
; Fault geometry
; Fault growth
; Fault segmentation
; Normal faults
; Relay zone
英文关键词: fault geometry
; fault plane
; fault zone
; normal fault
; segmentation
; seismic data
; seismic reflection
; seismic survey
英文摘要: Normal faults are often complex three-dimensional structures comprising multiple sub-parallel segments separated by intact or breached relay zones. Relay zones are classified according to whether they step in the strike or dip direction and whether the relay zone-bounding fault segments are unconnected in 3D or bifurcate from a single surface. Complex fault surface geometry is described in terms of the relative numbers of different types of relay zones to allow comparison of fault geometry between different faults and different geological settings. A large database of fault surfaces compiled primarily from mapping 3D seismic reflection surveys and classified according to this scheme, reveals the diversity of 3D fault geometry. Analysis demonstrates that mapped fault geometries depend on geological controls, primarily the heterogeneity of the faulted sequence and the presence of a pre-existing structure, as well as on resolution limits and biases in fault mapping from seismic data. Where a significant number of relay zones are mapped on a single fault, a wide variety of relay zone geometries occurs, demonstrating that individual faults can comprise segments that are both bifurcating and unconnected in three dimensions. © 2021 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166494
Appears in Collections: 气候变化与战略
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作者单位: Fault Analysis Group, UCD School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland; Irish Centre for Research in Applied Geosciences (iCRAG), UCD School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland; DiSTAR, Università degli Studi di Napoli “Federico II”, Naples, Italy; Norwegian Geotechnical Institute, 40 St Georges Terrace, Perth, WA 6000, Australia
Recommended Citation:
Roche V.,Camanni G.,Childs C.,et al. Variability in the three-dimensional geometry of segmented normal fault surfaces[J]. Earth Science Reviews,2021-01-01,216