Results from shallow research drilling at Inyo Domes, Long Valley Caldera, California and Salton Sea geothermal field, Salton Trough, California

Conference · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5619449

Younker, L W; Eichelberger, J C; Kasameyer, P W; Newmark, R L; Vogel, T A

This report reviews the results from two shallow drilling programs recently completed as part of the United States Department of Energy Continental Scientific Drilling Program. The purpose is to provide a broad overview of the objectives and results of the projects, and to analyze these results in the context of the promise and potential of research drilling in crustal thermal regimes. The Inyo Domes drilling project has involved drilling 4 shallow research holes into the 600-year-old Inyo Domes chain, the youngest rhyolitic event in the coterminous United States and the youngest volcanic event in Long Valley Caldera, California. The purpose of the drilling at Inyo was to understand the thermal, chemical and mechanical behavior of silicic magma as it intrudes the upper crust. This behavior, which involves the response of magma to decompression and cooling, is closely related to both eruptive phenomena and the establishment of hydrothermal circulation. The Salton Sea shallow research drilling project involved drilling 19 shallow research holes into the Salton Sea geothermal field, California. The purpose of this drilling was to bound the thermal anomaly, constrain hydrothermal flow pathways, and assess the thermal budget of the field. Constraints on the thermal budget links the local hydrothermal system to the general processes of crustal rifting in the Salton Trough.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Sandia National Labs., Albuquerque, NM (USA); Michigan State Univ., East Lansing (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5619449
• Report Number(s): UCRL-97583; CONF-8709190-1; ON: DE88002665
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150201 -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
58 GEOSCIENCES
580202* -- Geophysics-- Volcanology-- (1980-1989)
CALIFORNIA
DRILLING
ENERGY SYSTEMS
FEDERAL REGION IX
GEOLOGIC MODELS
GEOTHERMAL FIELDS
GEOTHERMAL SYSTEMS
Geothermal Legacy
HEAT FLOW
HYDROTHERMAL SYSTEMS
LONG VALLEY
MAGMA
NORTH AMERICA
RESEARCH PROGRAMS
SALTON SEA GEOTHERMAL FIELD
USA
VOLCANISM
VOLCANOES
WELL DRILLING