Deformation Bands on Mars and Implications for Subsurface Fluid Flow (original) (raw)
2007
Introduction: Clastic sedimentary deposits are well– known source regions for terrestrial underground reservoirs of volatiles because of the high porosities and permeabilities of these rocks [1,2]. Faults and their surrounding damage zones play an important role in controlling the pathways along which volatiles tend to migrate within these reservoirs. This is because faults and attendant damage zones can act as either barriers [3–6] or conduits [7–9] to the movement of volatiles within the reservoir. Where exposed through erosion, fault–controlled reservoirs offer excellent opportunities to examine past tectonic, geochemical, hydrologic and biologic processes that originally occurred in the subsurface. The light-toned layered deposits on Mars show abundant evidence of diagenetic alteration that is attributed to subsurface fluid flow. These deposits are in places highly fractured. Therefore understanding the implications of brittle fracturing on fluid flow potential through these dep...
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