DOI: 10.1002/2015GL064026
论文题名: Fractal particle size distribution of pulverized fault rocks as a function of distance from the fault core
作者: Muto J. ; Nakatani T. ; Nishikawa O. ; Nagahama H.
刊名: Geophysical Research Letters
ISSN: 0094-9445
EISSN: 1944-9176
出版年: 2015
卷: 42, 期: 10 起始页码: 3811
结束页码: 3819
语种: 英语
英文关键词: Arima-Takatsuki Tectonic Line
; dynamic stress pulse
; fractal
; particle size distribution
; pulverized rocks
; San Andreas fault
Scopus关键词: Comminution
; Fractal dimension
; Fractals
; Grinding (comminution)
; Light transmission
; Particle size
; Particle size analysis
; Rocks
; Size distribution
; Stress analysis
; Strike-slip faults
; Structural geology
; Tectonics
; Arima-Takatsuki Tectonic Line
; Dynamic stress
; Impact loadings
; Micron scale
; Opening mode fracture
; San Andreas fault
; Seismic rupture propagation
; Volumetric expansion
; Faulting
; fault plane
; fractal analysis
; loading test
; particle size
; rupture
; San Andreas Fault
; shear
; size distribution
英文摘要: The size distributions of particle in pulverized rocks from the San Andreas fault and the Arima-Takatsuki Tectonic Line were measured. The rocks are characterized by the development of opening mode fractures with an apparent lack of shear. Fragments in the rocks in both fault zones show a fractal size distribution down to the micron scale. Fractal dimensions, dependent on mineral type, decrease from 2.92 to 1.97 with increasing distance normal to the fault core. The fractal dimensions of the rocks are higher than those of both natural and experimentally created fault gouges measured in previous studies. Moreover, the dimensions are higher than the theoretically estimated upper fractal limit under confined comminution. Dimensions close to 3.0 have been reported in impact loading experiments. The observed characteristics indicate that pulverization is likely to have occurred by a dynamic stress pulse with instantaneous volumetric expansion, possibly during seismic rupture propagation similar to impact loading. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931565705&doi=10.1002%2f2015GL064026&partnerID=40&md5=acd6498c983668786f68f68adb22127e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9060
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth Science, Tohoku University, Sendai, Japan
Recommended Citation:
Muto J.,Nakatani T.,Nishikawa O.,et al. Fractal particle size distribution of pulverized fault rocks as a function of distance from the fault core[J]. Geophysical Research Letters,2015-01-01,42(10).