DOI: 10.1016/j.tecto.2019.228296
论文题名: A geological record of changing propagation directions of fault slip events during the growth of a normal fault system
作者: Childs C. ; Delogkos E. ; Manzocchi T. ; Walsh J.J.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 774 语种: 英语
中文关键词: Fault growth
; Normal faults
; Ptolemais Basin
; Slip events
; Slip propagation direction
英文关键词: Geophysics
; Physics
; Fault growth
; Normal faults
; Ptolemais Basin
; Slip events
; Slip propagation
; Fault slips
; fault displacement
; fault slip
; geological record
; mapping method
; normal fault
; nucleation
; Greece
; Ptolemais Basin
; Western Macedonia
英文摘要: The lack of an unambiguous method of determining the propagation direction of slip events on faults over significant time periods limits our understanding of the long-term stability of fault slip propagation directions. A geological means for determining the propagation direction of slip events during the growth of faults is provided by mutually cross-cutting faults and bed-parallel slip-surfaces in the Ptolemais Basin, northern Greece. Bed-parallel slip-surfaces intermittently offset the faults as they grew to form discontinuities on otherwise continuous fault surfaces. Subsequent fault slip events bypassed these discontinuities generating structures that provide a record of their propagation direction. Data collated from 3D fault mapping during lignite mining operations reveal that the slip events on these faults propagated predominantly upwards at low throws. Mixed slip propagation directions at higher fault displacements, up to 50 m, demonstrate that the locations of the points of nucleation of slip events were more distributed over fault surfaces once the faults were established. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170565
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; iCRAG (Irish Centre for Research in Applied Geosciences), UCD School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland
Recommended Citation:
Childs C.,Delogkos E.,Manzocchi T.,et al. A geological record of changing propagation directions of fault slip events during the growth of a normal fault system[J]. Tectonophysics,2020-01-01,774