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
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
Art Illuminates the Grand Canyon: Exploring the Environmental Puzzle
Art Illuminates the Grand Canyon: Exploring the Environmental Puzzle
Publications
Bayesian mapping of regionally grouped, sparse, univariate earth science data
Some earth science data are naturally grouped by region, and it is often desirable to map these data by region. However, if there are only a few samples within each region, then the map should be smoothed in an appropriate way to mitigate the problems that arise from having only a few samples. A smoothing algorithm based on a Bayesian hierarchical model is developed and presented in this...
Airborne geophysical analysis to decipher salinization for coastal Louisiana
Coastal Louisiana is known for saltwater intrusion that threatens wetlands, aquifers, and rivers. However, the extent of saltwater intrusion is not well understood. This study develops an innovative framework with airborne electromagnetic (AEM) data to map chloride concentration distributions for wetlands in the Mississippi River deltaic plain and Chenier plain as well as for the...
In situ Re-Os geochronology of Re-rich Palaeogene molybdenite by LA-ICP-MS/MS
In situ Re–Os geochronology by LA-ICP-MS/MS was previously demonstrated by reacting Os with CH4 or N2O reaction gasses. However, for both reactions, a minor proportion of the Re parent isotope also reacts, potentially leading to significant isobaric interferences of 187Re on 187Os, especially for young samples with little radiogenic in-growth. Here we present an interlaboratory...
Science
Life Cycle of Critical Minerals: A Balanced Approach to Meeting Our Nation's Resource Demands
Critical minerals are essential to the Nation’s economy and security. Demand for critical minerals is increasing, and it is essential to balance the societal need for these minerals with efforts to understand the effects of mining on other natural resources and to develop techniques to minimize these effects. The USGS Minerals Resources Life Cycle Integrated Science Team (IST) focuses on the life...
By
Ecosystems Mission Area, Energy and Mineral Resources Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Columbia Environmental Research Center, Geology, Energy & Minerals Science Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Geology, Geophysics, and Geochemistry Stable Isotope Laboratory (GSIL)
The GSIL is a state-of-the-art facility located on the Denver Federal Center that specializes in the measurement of light stable isotope — Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O), and Sulfur (S) — compositions and other chemical and biomarker analytes in matrices relevant to the Earth sciences. Chemical and isotopic tracers offer novel insights into ecosystem biogeochemistry, food webs...
Geology of the eastern Piedmont and upper Coastal Plain along the Fall Zone, Virginia to Georgia
This USGS NCGMP Project aims to fill the void in geologic map coverage along the Fall Zone from southeastern Virginia to central Georgia, for critical mineral research, earthquake hazards, and interstate correlation. We are also forging strong cooperative ties within the NCGMP by combining resources across all three Program components by supporting Virginia Energy (Virginia Geological Survey), the...