Core Lithology, Valles Caldera No. 1, New Mexico
Report: Core Lithology, Valles Caldera No. 1, New Mexico
AbstractVallas caldera No. 1 (VC-1) is the first Continental Scientific Drilling Program research core hole in the Vallas caldera and the first continuously cored hole in the region. The hole penetrated 298 m of moat volcanics and caldera-fill ignimbrites, 35 m of volcaniclastic breccia, and 523 m of Paleozoic carbonates, sandstones, and shales with over 95% core recovery. The primary research objectives included coring through the youngest rhyolite flow within the caldera; obtaining structural and stratigraphic information near the intersection of the ring-fracture zone and the pre-caldera Jemez fault zone; and penetrating a high-temperature hydrothermal outflow plume near its source. This report presents a compilation of lithologic and geophysical logs and photographs of core that were collected while drilling VC-1. It is intended to be a reference tool for researchers interested in caldera processes and associated geologic phenomena.
- Jamie N. Gardner, Fraser E. Goff, Sue Goff, Larry Maassen, K. Mathews, Daniel Wachs and D. Wilson
- Los Alamos National Laboratory, NM, 1987
- Report Number
- Not Provided
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Jamie N. Gardner,Fraser E. Goff,Sue Goff,Larry Maassen,K. Mathews,Daniel Wachs,D. Wilson. 1987. Core Lithology, Valles Caldera No. 1, New Mexico. Los Alamos, NM: Los Alamos National Laboratory, NM. Report No.: LA-10957-OBES.