Geology, Geophysics, and Geochemistry Science Center

Isotope and Aqueous Geochemistry

The Isotope and Aqueous Geochemistry Branch hosts several of the Center's laboratories, including the Noble Gas Laboratory, Stable Isotope Laboratory, Argon Geochronology Laboratory, Mass Spectrometry Laboratories, and the Plasma Laboratory. These laboratories support research in mineral and energy resources, ecosystem, environmental, and natural hazards. Taken together the research of the Isotope and Aqueous Geochemistry Branch is central to modern economic geology studies but also to characterizing an exceptionally broad range of earth processes.

Filter Total Items: 4
Date published: August 21, 2020
Status: Active

Isotope and Chemical Methods for Mineral and Geoenvironmental Assessments and Support of USGS Science Strategy

This Project integrates several geochemical tools—stable isotope geochemistry, noble gas geochemistry, active gas geochemistry, single fluid inclusion chemistry, and fluid inclusion solute chemistry—in studies of the processes that form mineral deposits and the processes that disrupt them during mining or natural weathering. Research is directed toward fundamental scientific questions or, in...

Date published: May 29, 2020
Status: Active

Argon Geochronology

This project supports the USGS argon geochronology laboratory in Denver. The USGS 40Ar/39Ar geochronology laboratory is a state-of-the-art research facility for determining absolute ages of minerals and rocks. The 40Ar/39Ar laboratory contributes critical geochronology to individual USGS research projects and to partners in academia and other Federal...

Date published: June 29, 2018
Status: Completed

Macro and Micro Analytical Methods Development

The Macro and Micro Analytical Methods Development Project (MMAMD) provides access to the expertise of highly experienced research scientists and state of the art analytical instrumentation to develop new and unique analytical capabilities to solve complex problems beyond routine analysis.

Date published: May 8, 2018
Status: Active

From Outcrop to Ions: development and application of in-situ isotope ratio measurements to solve geologic problems

Project objectives are to (1) develop innovative analytical techniques for isotope geochemistry and U-Pb geochronology using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and (2) apply these techniques to collaborative research projects of high priority to the Mineral Resources Program, including studies related to the formation of "critical mineral" deposits, and...