Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073965 |
Experimental postseismic recovery of fractured rocks assisted by calcite sealing | |
Aben, F. M.1,2,3; Doan, M. -L.1,2; Gratier, J. -P.1,2; Renard, F.1,2,4 | |
2017-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | France; England; Norway |
英文摘要 | Postseismic recovery within fault damage zones involves slow healing of coseismic fractures leading to permeability reduction and strength increase with time. To better understand this process, experiments were performed by long-term fluid percolation with calcite precipitation through predamaged quartz-monzonite samples subjected to upper crustal conditions of stress and temperature. This resulted in a P wave velocity recovery of 50% of its initial drop after 64 days. In contrast, the permeability remained more or less constant for the duration of the experiment. Microstructures, fluid chemistry, and X-ray microtomography demonstrate that incipient calcite sealing and asperity dissolution are responsible for the P wave velocity recovery. The permeability is unaffected because calcite precipitates outside of the main flow channels. The highly nonparallel evolution of strength recovery and permeability suggests that fluid conduits within fault damage zones can remain open fluid conduits after an earthquake for much longer durations than suggested by the seismic monitoring of fault healing. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407790500016 |
WOS关键词 | SHALLOW FAULT ZONE ; 1992 M7.5 LANDERS ; HYDROTHERMAL CONDITIONS ; FLUID-FLOW ; PRESSURE SOLUTION ; SEISMIC VELOCITY ; TEMPORAL-CHANGES ; SAN-ANDREAS ; EARTHQUAKE ; PRECIPITATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27984 |
专题 | 气候变化 |
作者单位 | 1.Univ Grenoble Alpes, Grenoble, France; 2.Univ Savoie Mt Blanc, CNRS, IRD, IFSTTAR, Grenoble, France; 3.UCL, Dept Earth Sci, London, England; 4.Univ Oslo, Dept Geosci, PGP, Oslo, Norway |
推荐引用方式 GB/T 7714 | Aben, F. M.,Doan, M. -L.,Gratier, J. -P.,et al. Experimental postseismic recovery of fractured rocks assisted by calcite sealing[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(14). |
APA | Aben, F. M.,Doan, M. -L.,Gratier, J. -P.,&Renard, F..(2017).Experimental postseismic recovery of fractured rocks assisted by calcite sealing.GEOPHYSICAL RESEARCH LETTERS,44(14). |
MLA | Aben, F. M.,et al."Experimental postseismic recovery of fractured rocks assisted by calcite sealing".GEOPHYSICAL RESEARCH LETTERS 44.14(2017). |
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