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Geology, Energy & Minerals Science Center

Scientists within the GEMSC represent a breadth of programs focused on the USGS mission; Energy Resources Program, Mineral Resources Program, National Cooperative Geologic Mapping Program, and Environmental Health Programs. GEMSC conducts comprehensive, interdisciplinary research and surveys of the origin, occurrence, distribution, quantity, and composition of oil, gas, coal, minerals, and more.

News

USGS offers funding to states to find critical minerals in mine waste

USGS offers funding to states to find critical minerals in mine waste

The Geoheritage Sites of the Nation Explorer is LIVE!

The Geoheritage Sites of the Nation Explorer is LIVE!

Trash to Treasure: Could energy wastewaters be a viable source of lithium?

Trash to Treasure: Could energy wastewaters be a viable source of lithium?

Publications

Relating systematic molecular and textural properties of graptolite pyrolyzed via gold tube hydrous pyrolysis: Implications for thermal proxies in lower Paleozoic marine shales

A series of gold tube pyrolysis experiments (72 h, 300–550 °C, 50 MPa) conducted on a graptolite-rich lower Paleozoic marine shale generated pyrolysis residues for a comprehensive evaluation of the molecular and structural variability of three types of graptolite periderm. Organic petrology, Raman spectroscopy, and field emission scanning electron microscopy (FE-SEM) with energy...
Authors
Xiaowei Zheng, Hamed Sanei, Fujie Jiang, Qingyong Luo, Yewei Wang, Jennifer Nedzweckas, Brett J. Valentine, M. Rebecca Stokes, Liu Cao, Paul C. Hackley

Machine learning provides reconnaissance-type estimates of carbon dioxide storage resources in oil and gas reservoirs

Oil and gas reservoirs represent suitable containers to sequester carbon dioxide (CO2) in a supercritical state because they are accessible, reservoir properties are known, and they previously contained stored buoyant fluids. However, planners must quantify the relative magnitude of the CO2 storage resource in these reservoirs to formulate a comprehensive strategy for CO2 mitigation...
Authors
E.D. Attanasi, Philip A. Freeman, Timothy C. Coburn

Statistical approaches for modeling correlated grade and tonnage distributions and applications for mineral resource assessments

Correlations between grade and tonnage exist in mineral resource data compiled from published reports, but they are not always addressed during quantitative assessment of undiscovered mineral resources. Failure to account for correlated grade and tonnage distributions can result in geologically unrealistic assessment results. Current software tools simulate univariate ore tonnage and...
Authors
Joshua Mark Rosera, Graham W. Lederer, John H. Schuenemeyer
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