The Southwest Isotope Research Laboratory (SWIRL) comprises a group of isotope geochemistry laboratories housed at the USGS in Denver. Capabilities include stable isotopes, radiogenic isotopes (TIMS and ICP-MS), noble gas isotopes, and 40Ar/39Ar geochronology. SWIRL scientists collaborate on a range of projects both inside and outside the USGS, including minerals, energy, geologic mapping, hydrology, biology and ecosystems, chronology, tracers, and environmental work.
