A Magnetotelluric Profile of the Wind River Thrust, Wyoming

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Department of Geological and Mining Engineering and Sciences


Data from ten magnetotelluric (MT) stations over the Wind River Uplift and adjacent basins are interpreted with constraints from the Consortium for Continental Reflection Profiling (COCORP) seismic reflection data and from gravity data. The MT data reveal the general configuration of the conductive basins and resistive uplifts; low resistivity zones are interpreted as faults which correspond to those visible in the COCORP sections. The Wind River Thrust Fault is modelled as a conductive zone that can be traced to a depth of at least 20 km, and the crust beneath the Green River Basin is about 40 km thick. The modelled constant dip of the Wind River Thrust is consistent with a tectonic model of lateral compressive stress.

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© 1990

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Physics of the Earth and Planetary Interiors