Summary of supporting data for USGS regional heat-flow studies of the Great Basin, 1970-1990
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Open-File Report↗
Geology topics
Frederick V. Grubb
Publications and source records attributed to Frederick V. Grubb.
The thermal regime of Santa Maria Province, California. Phosphorus geochemistry, diagenesis, and mass balances of the Miocene Monterey Formation at Shell Beach, California
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Bulletin↗
Heat-flow studies in the northwest geysers geothermal field, California
Temperature and thermal conductivity data were acquired from 3 idle production wells in the Northwest Geysers. Heat-flow profiles derived from data recorded in the caprock which overlies the steam reservoir reveal a decrease of heat flow with depth in 2 of the 3 wells. These observations contradict the generally accepted theory that conductive heat flow is constant with depth within The Geysers caprock. There are several possible explanations for this, but the available data suggest that these profiles reflect a local recession or cooling of the reservoir top within the past 5000 to 10000 years.
Conference Paper↗