1887

Abstract

Deformation of poorly consolidated sandstone and its effect on petrophysical properties of the rock are investigated by structural fieldwork, in-situ measurements of permeability, microstructural analyses of thin sections and ultrasonic measurements of samples. The studied locality comprises a series of listric normal faults that cut through Aghione Formation (Miocene) in Corsica, France. Three types of deformation bands are reported. Surprisingly, intense cataclasis is observed in the phyllosilicate-rich (more than 20%) poorly consolidated sandstone. Permeability decreases up to two orders of magnitude in the damage zone (deformation bands), while it increases in the slip surfaces. The slip surfaces are open and make conduit to fluid flow, which is also confirmed by the field observation of fluid flow path.

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/content/papers/10.3997/2214-4609.20143045
2012-10-03
2024-03-29
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20143045
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