Fibrous clay mineral authigenesis induced by fluid-rock interaction in the Galera fault zone (Betic Cordillera, SE Spain) and its influence on fault gouge frictional properties
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- 作者：Catalina Sá ; nchez-Roaa ; catasroa@ujaen.es" class="auth_mail" title="E-mail the corresponding author ; catasroa@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Juan Jimé ; nez-Millá ; na ; Isabel Abada ; Daniel R. Faulknerb ; Fernando Nietoc ; Francisco J. Garcí ; a-Tortosaa
- 关键词：Fault mechanics ; Clay mineral authigenesis ; Earthquake nucleation ; SEM ; Sepiolite ; X-ray diffraction
- 刊名：Applied Clay Science
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：134
- 期：part_P3
- 页码：275-288
- 全文大小：3136 K
文摘
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Fibrous clay minerals concentrate in highly deformed areas of the active Galera Fault Zone, in the Betic Cordillera (Spain).
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Authigenesis of fibrous clay minerals implies an open chemical system where the fault acts as a conduit for Mg-rich fluids.
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Variations in fluid-rock interaction can cause heterogeneities in the mineralogy of the fault gouge.
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The properties of the new mineral associations have implications in fault strength and potential for earthquake nucleation.