Geology, Minerals, Energy, and Geophysics Science Center

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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!

News

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.

Date published: September 3, 2021

Picture This: A National Climate Change Viewer that Helps Land Managers and Decision Makers Plan for Climate Change

The enormity of the challenge posed by climate change makes it difficult to visualize and understand on the ground. Even though wide-ranging impacts are visible today, it’s hard to envision how tomorrow’s changes will take shape. What will the temperature be in Portland in the spring, or how much rain might Dallas get in the fall? The USGS has a tool that can help address that challenge.

Publications

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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

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Year Published: 2021

Late Cenozoic tephrochronology of the Mount Diablo area within the evolving plate-tectonic boundary zone of northern California

We present a tephrochronologic/chronostratigraphic database for the Mount Diablo area and greater San Francisco Bay region that provides a spatial and temporal framework for geologic studies in the region, including stratigraphy, paleogeography, tectonics, quantification of earth surface processes, recurrence of natural hazards, and climate change...

Sarna-Wojcicki, Andrei; Sullivan, Raymond; Deino, Alan L.; Walkup, Laura; Wagner, J. Ross; Wan, Elmira

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Year Published: 2021

Geologic framework of Mount Diablo, California

The basic stratigraphic and structural framework of Mount Diablo is described using a revised geologic map, gravity data, and aeromagnetic data. The mountain is made up of two distinct stratigraphic assemblages representing different depocenters that were juxtaposed by ~20 km of late Pliocene and Quaternary right-lateral offset on the Greenville-...

Graymer, Russell; Langenheim, Victoria