Results from Shallow Research Drilling at Inyo Domes, Long Valley Caldera, California and the Salton Sea Geothermal Field, Salton Trough, California

A goal of the thermal regimes sector of the U.S. Continental Scientific Drilling Program is to understand the intrusion of magma into the crust, the release of heat and volatiles from these intrusions, and the development of associated hydrothermal systems. These processes result in the formation and modification of continental crust. Magmatic processes of interest include tectonic constraints on intrusions, intrusion mechanisms, cooling behavior, geochemical evolution, interaction with crustal rocks and fluids, degassing, volcanic eruption mechanisms, and coupling of the hydrothermal system to the heat source. Hydrothermal processes of interest include interaction between magma and near-surface fluids, fluid flow pathways, circulation patterns, flow rates, barriers to flow, rock/water interactions, and development of mineral deposits.