Strontium isotopic data from the Mount Emmons-Redwell area, Crested Butte, Colorado

This U.S. Geological Survey (USGS) data release contains strontium isotopic data from water and rock samples collected between 2000 and 2019 from the Mount Emmons area, central Colorado. The data include strontium isotopic compositions, 87Sr/86Sr, for surface- and groundwater samples collected from streams, springs, draining mines, piezometers, and drill holes and for leachates of rock samples collected from surface outcrops and drill core. Rock sample isotopic data are results from two-step leaching of samples from various lithologies within the study area. Drill core rock and water samples were collected from holes drilled in 2017 and 2018 as part of a U.S. Geological Survey and Department of Energy investigation of groundwater flowpaths in the Redwell basin. Complete water chemistry for samples analyzed in this study are presented in Johnson and others (2019). Whole-rock geochemical data for rock samples used in this study are published in Charnock and others (2022). Previously published strontium isotopic data from within the study area can be found in Manning and others (2008). Data are reported in a comma-separated values (CSV) file that lists the samples that were analyzed, drill hole identification number and depth (if applicable), latitude/longitude location information, and brief sample descriptions. All column headings and abbreviations are explained in the accompanying metadata.

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