Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092023 |
The role of grain size and effective normal stress on localization and the frictional stability of simulated quartz gouge | |
John D. Bedford; Daniel R. Faulkner | |
2021-03-22 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | For earthquakes to occur on tectonic faults deformation localizes onto discrete slip surfaces within the gouge material of the fault core. Here we investigate how localization is promoted in quartz gouge, a material known to exhibit unstable stick‐slip behavior, by assessing the role of grain size and effective normal stress (on microstructural evolution and frictional behavior. We observe stable sliding, slow‐slip instability and stick‐slip with increasing displacement. We find that initially fine‐grained gouge and high promotes unstable stick‐slip behavior, whereas slow‐slip is more prevalent at low . Microstructural analyses of the sheared gouges show that stick‐slip behavior occurs after localization of deformation on to discrete Y‐shears, which undergo a significant cataclastic grain size reduction relative to the bulk of the gouge, a process enhanced by high . Our results show that localization and instability are promoted by high effective normal stress and small grain size. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/320970 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | John D. Bedford,Daniel R. Faulkner. The role of grain size and effective normal stress on localization and the frictional stability of simulated quartz gouge[J]. Geophysical Research Letters,2021. |
APA | John D. Bedford,&Daniel R. Faulkner.(2021).The role of grain size and effective normal stress on localization and the frictional stability of simulated quartz gouge.Geophysical Research Letters. |
MLA | John D. Bedford,et al."The role of grain size and effective normal stress on localization and the frictional stability of simulated quartz gouge".Geophysical Research Letters (2021). |
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