气候变化领域集成服务门户(CCPortal): To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks

CCPortal

DOI	10.1016/j.epsl.2020.116635
	To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks
	Phillips N.J.; Williams R.T.
发表日期	2021
ISSN	0012821X
卷号	553
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.
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
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203252
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
推荐引用方式 GB/T 7714	Phillips N.J.,Williams R.T.. To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks[J],2021,553.
APA	Phillips N.J.,&Williams R.T..(2021).To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks.Earth and Planetary Science Letters,553.
MLA	Phillips N.J.,et al."To D or not to D? Re-evaluating particle-size distributions in natural and experimental fault rocks".Earth and Planetary Science Letters 553(2021).