Detailed Geologic Mapping & Analysis
Observation-based field data are used to produce maps, along with aerial photography and LiDAR data. 3D models are produced for select geothermal prospects. GBCGE affiliates also excavate trenches across faults to determine age of faulting.
Two Meter Temperature Surveys
GBCGE affiliates pioneered the two meter temperature measurement technique. The method involves pounding a steel rod into the ground, inserting a resistant temperature device into the rod, and then measuring the temperature after a short equilibration period. This method has identified thermal anomalies in areas without other surface geothermal indicators.
GBCGE affiliates use remote sensing techniques to study geothermal on a range of scales. Spectrometers are used in the field and lab to identify mineralogy based on spectral signatures. Remote sensing data are used to map geothermal indicator minerals over large areas, often identifying new areas of interest. Researchers also use spectroscopy to produce geothermal core logs showing mineralogy.
Fluid and Gas Geochemistry
GBCGE affiliates at the Nevada Bureau of Mines and Geology collect water and gas samples from geothermal springs and wells. Geochemical data are used to estimate reservoir temperatures and are critical in guiding exploration efforts.
2D/3D Seismic Data Surveys
Geophysical Data Collection & Analysis
GBCGE affiliates use historical geophysical data, and collect new data in the field. Gravity and magnetics data are processed and used to create maps and models.
Geodetic Analysis of Crustal Strain
GBCGE affiliates at the Nevada Geodetic Laboratory use highly accurate GPS data fromregional networks to study tectonic strain and geothermal activity across the Great Basin.
GGBCGE affiliates at the Desert Research Institute work to characterize geothermal reservoirs by studying fracture networks and geochemistry of reservoir fluids.