Origin and Characterization of Geothermal Waters at Desert Queen, Nevada

Abstract

The Desert Queen geothermal system, which is in close proximity to two locations where geothermal energy is currently being harnessed, may host an additional reservoir. A ?18O vs ?D plot indicates that Desert Queen waters likely originate from the Humboldt River, and reflects Humboldt River water that is clearly evaporated. Temperatures of the reservoir at depth are estimated to be between 92-141°C and were calculated using the ?18O(SO4-H2O) geothermometer. It is unclear whether these temperatures reflect waters from the outflow zone of the Desert Peak geothermal system, or waters from a different reservoir at Desert Queen. Since these temperatures are below 150°C, they indicate borderline exploitable geothermal energy potential. Further investigation by drilling is necessary to determine the true nature of the waters at depth.