Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093552 |
The Potential for Low-Grade Metamorphism to Facilitate Fault Instability in a Geothermal Reservoir | |
Mengke An; Fengshou Zhang; Ki-Bok Min; Derek Elsworth; Chris Marone; Changrong He | |
2021-06-01 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Native and fluid circulation-induced metamorphic products may affect the stability of faults in geothermal reservoirs – particularly epidote and chlorite. Our laboratory experiments conducted at hydrothermal conditions show that these two minerals, when precipitated on natural faults, may promote fault instability or failure under conditions typifying a geothermal reservoir. Shear experiments on epidote-rich fault gouges indicate potentially unstable frictional behavior - more pronounced at elevated temperatures and pore fluid pressures – and indicate increased potential for the nucleation of slip instability relative to that of the host granodiorite gouge. Experimental results indicate in particular that epidote can increase the potential for induced seismicity on existing faults. Increased proportions of chlorite in gouges stabilize the faults but apparently lower the frictional strength. Our results reveal that the metamorphic minerals exert a subtle but potentially significant control on fault strength and stability in geothermal reservoirs. |
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/329736 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Mengke An,Fengshou Zhang,Ki-Bok Min,et al. The Potential for Low-Grade Metamorphism to Facilitate Fault Instability in a Geothermal Reservoir[J]. Geophysical Research Letters,2021. |
APA | Mengke An,Fengshou Zhang,Ki-Bok Min,Derek Elsworth,Chris Marone,&Changrong He.(2021).The Potential for Low-Grade Metamorphism to Facilitate Fault Instability in a Geothermal Reservoir.Geophysical Research Letters. |
MLA | Mengke An,et al."The Potential for Low-Grade Metamorphism to Facilitate Fault Instability in a Geothermal Reservoir".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论