A Core Hole in the Southwestern Moat of the Long Valley Caldera: Early Results

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Journal Article: A Core Hole in the Southwestern Moat of the Long Valley Caldera: Early Results

Abstract
A continuously cored hole penetrated 715 m into the southwestern moat of the Long Valley caldera. Temperatures in the postcaldera deposits increased rapidly with depth over the upper 335 m to 202°C, then remained nearly isothermal into the Bishop Tuff to the bottom of the hole. The depth to the Bishop Tuff is the shallowest, and the temperatures observed are among the highest in holes drilled in the caldera. The hole identifies a potential geothermal resource for the community of Mammoth Lakes, constrains the position of the principal heat source for the caldera's hydrothermal system, and serves as access for monitoring changes in water level, temperatures, and fluid chemistry.

Authors 
Harold A. Wollenberg, Michael L. Sorey, Christopher D. Farrar, Art F. White, S. Flexser and L.C. Bartel








Published Journal 
EOS, Transactions American Geophysical Union, 1987





DOI 
10.1029/EO068i020p00529-02

Online 
Internet link for A Core Hole in the Southwestern Moat of the Long Valley Caldera: Early Results

Citation

Harold A. Wollenberg,Michael L. Sorey,Christopher D. Farrar,Art F. White,S. Flexser,L.C. Bartel. 1987. A Core Hole in the Southwestern Moat of the Long Valley Caldera: Early Results. EOS, Transactions American Geophysical Union. 68(20):529-534.


Related Geothermal Exploration Activities
Activities (1)


Areas (1)
  1. Long Valley Caldera Geothermal Area
Regions (0)