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Faulting, fluid flow and geochemical alteration in the Matanuska Valley and Cook Inlet, Alaska

Dates

Year
2001

Citation

Bunds, Michael Patrick, 2001, Faulting, fluid flow and geochemical alteration in the Matanuska Valley and Cook Inlet, Alaska. University of Utah. PhD Dissertation. 162 p.

Summary

"The shear strength of faults is integral to earthquake mechanics and tectonics, and pore fluids strongly influence rock strength. Deformation can be partitioned onto low strength faults. Knowing the shear stress required for seismic slip is also crucial to earthquake forecasting. Elevated pore pressure in a fault lessens its frictional strength. Chemical reactions between fluids and rock can produce cements that impede escape of over-pressured fluids from faults and sedimentary rocks. This dissertation investigates the shear strength of the Castle Mountain fault (CMF), and the origin of cements along the fault and in Cook Inlet basin fore-arc strata, which the fault cuts. The CMF is a seismically active, orogen-parallel strike slip [...]

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