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oa Are Cataclastic Shear Bands Fluid Barriers or Capillarity Conduits? Insight from the Analysis of Redox Fronts in Porous
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 2nd EAGE International Conference on Fault and Top Seals - From Pore to Basin Scale 2009, Sep 2009, cp-136-00034
- ISBN: 978-90-73781-69-6
Abstract
The effect of cataclastic derformation bands on fluid flow in a non saturated zones is still unclear. To discuss interaction between fluid flow and cataclastic bands in the vadose zone, we examine the spatial distribution of oxidation fronts around bands in the Turonian porous sandstones of Urchaux (SE France). Our study shows new field evidences that cataclastic bands behave as permeability barrier but also as capillarity conduits for wetweak fluid.
