| DOI: | 10.1002/2016GL067788
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| 论文题名: | Weathering resistance of carbonate fault mirrors promotes rupture localization |
| 作者: | Goldberg R.; Siman-Tov S.; Emmanuel S.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9177
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| EISSN: | 1944-8908
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| 出版年: | 2016
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| 卷: | 43, 期:7 | | 起始页码: | 3105
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| 结束页码: | 3111
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| 语种: | 英语
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| 英文关键词: | dolostone
; erosion
; limestone
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| Scopus关键词: | Atomic force microscopy
; Dissolution
; Erosion
; Limestone
; Mirrors
; Nanoparticles
; Seismology
; Weathering
; Dolostones
; Fault localization
; Inter-seismic periods
; Nanoparticle layers
; Polished surfaces
; Re-precipitation
; Reactive minerals
; Weathering resistance
; Fault slips
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| 英文摘要: | Fractured rocks in fault zones regain their mechanical strength through a process called healing. A central pathway for healing involves the dissolution and reprecipitation of minerals in the fault zone which cements the fractured rocks during interseismic periods. However, some faults contain highly polished surfaces - coated in a thin nanoparticle layer - along which slip is localized. Crucially, these surfaces show little evidence of postseismic mineralization and healing. Here we use atomic force microscopy to show that naturally polished rocks from carbonate fault zones are resistant to dissolution, in stark contrast to the reactive minerals that make up the fault breccia. Our results suggest that the low reactivity of the nanoparticle layer could retard healing, helping to maintain the localization of the fault zone between seismic slip events. As fault localization affects seismic motion, the geochemical reactivity of fault mirrors could be an important control on seismicity along faults. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979490772&doi=10.1002%2f2016GL067788&partnerID=40&md5=8536c21659a1100a6c08f55919aef1e8
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10140
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Institute of Earth Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
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| Recommended Citation: | |
Goldberg R.,Siman-Tov S.,Emmanuel S.. Weathering resistance of carbonate fault mirrors promotes rupture localization[J]. Geophysical Research Letters,2016-01-01,43(7).
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