TY - RPRT TI - U-Pb ages of secondary silica at Yucca Mountain, Nevada: Implications for the paleohydrology of the unsaturated zone AU - L.A. Neymark AU - Y. Amelin AU - J.B. Paces AU - Z. E. Peterman PY - 2002 DO - 10.1016/s0883-2927(02)00032-x UR - https://pubs.usgs.gov/publication/70024670 ID - 70024670 ER -