Facilities Phoenix x62 TIMS used to obtain U-Pb and U-series data Clean room space for U-Pb sample preparation Views of the redwoods in U-Pb chemistry lab EPS is equipped with excellent rock preparation facilities, including crushing, mineral separation and hand picking-microscopes Well spaced analog gauges For more information about the W.M. Keck Isotope Facility, please visit https://kecklab.sites.ucsc.edu/