globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116635
论文题名:
To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks
作者: Phillips N.J.; Williams R.T.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 553
语种: 英语
中文关键词: brittle deformation ; cataclasis ; comminution ; fault rocks ; particle-size distributions
英文关键词: Comminution ; Fractal dimension ; Lattice vibrations ; Normal distribution ; Rocks ; Size distribution ; Structural geology ; Brittle crust ; Cataclasis ; Comminution model ; Fault rock ; First order ; Log-normal distribution ; Power law distribution ; Power law scalings ; Particle size ; brittle deformation ; cataclasite ; comminution ; experimental study ; fault zone ; particle size ; power law ; size distribution
英文摘要: Cataclasis is a first-order mechanism shaping fault-rock development in the brittle crust. The most accepted model for cataclasis is “constrained comminution” which predicts a power-law distribution of particle size described by the fractal dimension, D. In this paper, we statistically test for the presence of power-law scaling in 61 naturally and experimentally deformed fault rocks, thereby assessing the validity of the constrained comminution model. We find that no data set exhibits compelling evidence for power-law scaling, even when a lower threshold is applied to promote the appearance of power-law scaling. Log-normal distributions provide better fits to statistically conclusive test cases, both when using a lower threshold (91% of cases) and when examining the full data sets. Thus, our results are not consistent with constrained comminution. We propose that log-normal distributions provide a more useful description of fault-rock particle-size distributions and discuss the implications for the mechanisms of cataclasis. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165630
Appears in Collections:气候变化与战略

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作者单位: Department of Earth and Planetary Sciences, McGill University, Montréal, QC, Canada; Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706, United States

Recommended Citation:
Phillips N.J.,Williams R.T.. To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks[J]. Earth and Planetary Science Letters,2021-01-01,553
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