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: October 27, 2021

Media Alert: Airplane to Make Low-Level Flights Over Western and Northern Nevada and Part of Eastern California

Residents and visitors may witness a low-flying aircraft over western Nevada and part of eastern California starting around November 1, 2021 and continuing into the summer of 2022.

Date published: September 9, 2021

Helicopter Making Low-Level Flights over North-Central Idaho

Residents and visitors should not be alarmed to see a low-flying helicopter over Lemhi and Custer Counties west of Salmon, Idaho from September 6 to October 18, 2021. 

Date published: September 7, 2021

USGS Announces the Availability of the Environmental Assessment & Section 106, Protection of Historic Properties Review, for a new Laboratory Facility – Public Comments Sought

The USGS has prepared an Environmental Assessment in accordance with the National Environmental Policy Act for a new Laboratory Facility at Moffett Field in Santa Clara County, California. The USGS is requesting your comments on the EA and Section 106 review by September 22, 2021.


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Year Published: 2022

Temporal and petrogenetic links between Mesoproterozoic alkaline and carbonatite magmas at Mountain Pass, California

Mountain Pass is the site of the most economically important rare earth element (REE) deposit in the United States. Mesoproterozoic alkaline intrusions are spatiotemporally associated with a composite carbonatite stock that hosts REE ore. Understanding the genesis of the alkaline and carbonatite magmas is an essential scientific goal for a society...

Watts, Kathryn E.; Haxel, Gordon B.; Miller, David M.

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Year Published: 2021

Impacts of climate change on groundwater availability and spring flows: Observations from the highly productive Medicine Lake Highlands/Fall River Springs Aquifer System

Medicine Lake Highlands/Fall River Springs Aquifer System, located in northeastern California, is home to some of the largest first-order springs in the United States. This work assesses the likely effects of projected climate change on spring flow. Four anticipated climate futures (GFDL A2, GFDL B1, CCSM4 rcp 8.5, CNRM rcp 8.5) for California,...

Mancewicz, Lauren K; Davisson, L.; Wheelock, Shawn J; Burns, Erick; Poulson, Simon R.; Tyler, Scott W.

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Year Published: 2021

Influence of permafrost type and site history on losses of permafrost carbon after thaw

We quantified permafrost peat plateau and post-thaw carbon (C) stocks across a chronosequence in Interior Alaska to evaluate the amount of C lost with thaw. Macrofossil reconstructions revealed three stratigraphic layers of peat: (1) a base layer of fen/marsh peat, (2) peat from a forested peat plateau (with permafrost) and, (3) collapse-scar bog...

Manies, Kristen L.; Jones, Miriam C.; Waldrop, Mark; Leewis, Mary-Catherine; Fuller, Christopher C.; Cornman, Robert S.; Hoefke, Kristen