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.
Laboratories
Laboratories
Our center has several laboratories, ranging from geophysics to geochemistry to spectroscopy to scanning electron microscopes.
Science Branches
Science Branches
Our strong science portfolio integrates regional and economic geology with a broad range of geophysical, geochemical, analytical expertise. Our center has four scientific branches:
News
Department of the Interior launches effort to recover critical minerals from mine waste
Department of the Interior launches effort to recover critical minerals from mine waste
Low-Level Flights to Image Geology Over Parts of Louisiana, Mississippi, and Illinois
Low-Level Flights to Image Geology Over Parts of Louisiana, Mississippi, and Illinois
Recently completed geophysical survey will help protect critical infrastructure from geomagnetic storms and space weather
Recently completed geophysical survey will help protect critical infrastructure from geomagnetic storms and space weather
Publications
Distinguishing natural from mining-related metal sources by including streambank groundwater data in a stream mass loading study Distinguishing natural from mining-related metal sources by including streambank groundwater data in a stream mass loading study
Distinguishing stream metal loading caused by mine features from that caused by natural background sources remains challenging, yet this distinction is essential for making effective remedial decisions at many legacy mine sites. We combine a stream tracer injection and synoptic sampling study with data from shallow near-stream groundwater wells to estimate left-bank versus right-bank...
Pre-eruptive characteristics of “suspect” silicic magmas in Carlin-type Au-forming systems Pre-eruptive characteristics of “suspect” silicic magmas in Carlin-type Au-forming systems
World-class Carlin-type Au deposits hosted in sedimentary rock were formed when profuse Eocene silicic magmatism swept across northern Nevada in response to arc migration. Carlin-type Au deposits formed along with porphyry/skarn Cu-Mo-W-Au deposits, epithermal Ag-Au deposits, and distal disseminated Ag-Au deposits. But unlike these other Au-bearing deposits that have clear associations...
Depth of magma crystallization and fluid exsolution beneath the porphyry-skarn Cu deposits at Santa Rita and Hanover-Fierro, New Mexico, USA Depth of magma crystallization and fluid exsolution beneath the porphyry-skarn Cu deposits at Santa Rita and Hanover-Fierro, New Mexico, USA
The depth level at which porphyry Cu–forming magmas fractionated and exsolved mineralizing fluids is actively debated. In the classic model, extensive magma fractionation occurs in large, upper crustal magma chambers, and concomitant fluid exsolution leads to forceful expulsion of residual magmas in the form of porphyry dikes, stocks, and breccia pipes, which subsequently serve as...
Science
Large Magmatic Systems for Minerals
This project continues work on large magmatic systems in the U.S., where critical mineral commodities important to clean energy technologies can be concentrated. Modeling of large mafic intrusion extents will continue, and new geophysical methods will be applied to improve understanding of magmatic systems.
Source, transport and deposition of critical minerals using trace metal and isotope systematics: Denver High Resolution Laboratory
The project objective is to develop and apply solution and in situ isotopic and trace element methods to emerging research opportunities to gain a better understanding of the processes controlling critical mineral deposits, metal mobility, and other geological inquiries.
Analytical Chemistry
The USGS Mineral Resources Program and other USGS scientists need specialized routine analysis in order to conduct their research. The Analytical Chemistry project facilitates the ability of USGS scientists to obtain needed analyses.