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Geology, Geophysics, and Geochemistry Science Center

Welcome to the Geology, Geophysics, and Geochemistry Science Center (GGGSC) located in Lakewood, Colorado on the Denver Federal Center. At GGGSC, we apply expertise in geology, geophysics, and geochemistry to interdisciplinary efforts in support of the USGS mission to address the Nation’s important earth science issues, with an emphasis on rare earth mineral resources.

Publications

Drone-based radiometric surveys provide high-resolution mine waste characterization Drone-based radiometric surveys provide high-resolution mine waste characterization

Airborne radiometric surveys use passive geophysical techniques to characterize geochemical variations at or near earth’s surface. These methods have been used for a variety of mapping applications, including mineral resource evaluation. However, detailed characterization of smaller geologic targets, including mine waste features, requires flying at lower altitudes and with tighter line...
Authors
Chloe Danielle Gustafson, Anjana Shah, Matthew Burgess, Josip Adams, Virginia McLemore, Evan Owen

New maps of natural radioactivity reveal critical minerals and more New maps of natural radioactivity reveal critical minerals and more

High-resolution airborne radiometric surveys are covering more ground than ever to provide insights into unseen geology, mineral resource potential, and possible health hazards.
Authors
Anjana Shah, Daniel Doctor, Chloe Danielle Gustafson, Alan D Pitts

RioM-1: A new calcite reference material for U-Pb LA-ICP-MS geochronology RioM-1: A new calcite reference material for U-Pb LA-ICP-MS geochronology

Determining absolute ages of carbonate diagenesis, faulting, fossil formation, speleothem growth, carbonate-hosted hydrocarbon deposits, vein mineralisation and hydrothermal alteration has become increasingly accessible through LA-ICP-MS U-Pb dating of calcite, complementing traditional isotope dilution methods still applicable to certain materials (e.g., speleothems via micro-drilling)...
Authors
Marco Silva, Cristiano Lana, Ricardo Scholz, Ian Buick, Sandra K. Kamo, Nick Roberts, Axel Gerdes, Michael Wiedenbeck, Blair Schoene, Francisco Apen, Sean Gaynor
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