Geology, Minerals, Energy, and Geophysics Science Center


Scientists with the GMEG Science Center work on issues related to geologic processes, mineral and energy resource potential, and past climate, primarily in the Western United States. The science staff includes Geologists, Geophysicists, Geochemists, Biologists, and Geographic Information Systems specialists located in Arizona, California, Nevada, Oregon, and Washington.

Primary Research Direction - What we do.

GMEGSC focuses on Geologic Mapping, Mineral Resources and Mineral Environmental Health, Landslide Hazards, Energy Resources, Earthquake Hazards, and Land Change Science.

Innovation - How we help.

GMEGSC hosts the USGS Innovation Center, which sponsors work with public and private technology partners to design, test, and bring into operation a new generation of technical and engineering tools to address urgent national natural science issues.

Disciplinary Expertise - How we do it.

GMEGSC utilizes Geologic Mapping and Tectonics, Geophysics, Economic Geology, Geochronology, Sedimentary Basin Studies and Energy Assessments, Landslide Hazards, Geomorphology, Paleoclimatology, and many more processes to complete our work!


Date published: June 15, 2021

Minerals Corner Spring 2021


As Spring 2021 ends, here are a few highlights from the USGS Mineral Resources Program’s recent activities and publications. 

Date published: February 4, 2021

Low-Flying Airplane Mapping Parts of Northeastern California

Residents should not be alarmed if they see a low-flying airplane over parts of northeastern California starting February 6, 2021.

Date published: November 2, 2020

Media Bulletin: Low-Flying Airplane and Helicopter Mapping Parts of West Texas and South-Central New Mexico to aid in Mapping Geology

Editor: In the public interest and in accordance with FAA regulations, the USGS is announcing this low-level airborne project. Your assistance in informing the local communities is appreciated.


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Year Published: 2021

Machine learning to identify geologic factors associated with production in geothermal fields: A case-study using 3D geologic data, Brady geothermal field, Nevada

In this paper, we present an analysis using unsupervised machine learning (ML) to identify the key geologic factors that contribute to the geothermal production in Brady geothermal field. Brady is a hydrothermal system in northwestern Nevada that supports both electricity production and direct use of hydrothermal fluids. Transmissive fluid-flow...

Siler, Drew L.; Pepin, Jeff D.; Vesselinov, Velimir V.; Mudunuru, Maruti K.; Ahmmed, Bulbul

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Year Published: 2021

Relative risk of groundwater-quality degradation near California (USA) oil fields estimated from 3H, 14C, and 4He

Relative risks of groundwater-quality degradation near selected California oil fields are estimated by examining spatial and temporal patterns in chemical and isotopic data in the context of groundwater-age categories defined by tritium and carbon-14. In the Coastal basins, western San Joaquin Valley (SJV), and eastern SJV; 82, 76, and 0...

McMahon, Peter B.; Landon, Matthew K.; Davis, Tracy; Wright, Michael; Rosecrans, Celia Z.; Anders, Robert; Land, Michael; Kulongoski, Justin T.; Hunt, Andrew

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Year Published: 2021

Ten years of volcanic activity at Mt Etna: High-resolution mapping and accurate quantification of the morphological changes by Pleiades and Lidar data

The topography of Mt. Etna, Italy, is subjected to continuous modifications depending on intensity and magnitude of eruptions that frequently occur at the volcano summit and flanks. In order to make high-resolution maps of morphological changes and accurately calculate the overall volume of the erupted products (e.g., lava flows, tephra fall out,...

Bisson, Marina; Spinetti, Claudia; Andronico, Daniele; Palaseanu-Lovejoy, Monica; Buongiorno, Maria Fabrizia; Alexandrov, Oleg; Cecere, Thomas