Core Holes At Valles Caldera - Redondo Geothermal Area (Goff, Et Al., 1986)

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Exploration Activity: Core Holes At Valles Caldera - Redondo Geothermal Area (Goff, Et Al., 1986)

Exploration Activity Details
Location Valles Caldera - Redondo Geothermal Area
Exploration Technique Core Holes
Activity Date 1984 - 1984
Usefulness useful
DOE-funding Unknown

Exploration Basis
A series of core holes were drilled from 1984 to 1988 as a part of the Continental Scientific Drilling Program (CSDP) to better understand the stratigraphy, structure, hydrothermal alteration, and subsurface architecture of the Valles caldera. Several authors have reported results from these core holes, including Goff et al. (1986, 1987), Gardner et al. (1987, 1989), Hulen & Nielson (1985), Hulen et al. (1988, 1989), Musgrave et al. (1989), Rowley et al. (1987), Shevenell et al. (1988), and Starquist (1988).
CSDP core hole VC-1 was completed in 1984. The objectives of VC-1 were to intersect the hydrothermal outflow plume near its source at the western margin of the caldera, to obtain stratigraphic and structural information at the intersection of the ring fracture zone and Jemez fault zone, and to core the youngest intracaldera rhyolite sequence. The well was drilled to a depth of 856 m with >95% core recovery, and penetrated thermal aquifers at the 480 m, 540 m, and 845 m intervals.


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