Title: Uranium, thorium isotopic analyses and uranium-series ages of calcite and opal, and stable isotopic compositions of calcite from drill cores UE25a#1, USW G-2 and USW G-3/GU-3, Yucca Mountain, Nevada
Subjects: Calcite, Opals, Radioactive dating
Places: Nevada, Yucca Mountain, Yucca Mountain (Nev.)