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Fluid Pumping |
The Nature of Fluid Pumping
Intermittent seismic slip leads to fluctuations in permeability and fluid flow within a shear zone. During slip there is an immediate increase in permeability, which subsequently decreases as pore space is sealed by precipitating material. Sealing allows pore pressure to increase again, and stress to build up until the next slip event (e.g. Cox et al. 2001). Fluctuation in permeability and fluid flow gives rise to crack-seal textures such as finely laminated quartz veins.
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From Cox et al. (2001)