TY - RPRT TI - Ages and stable-isotope compositions of secondary calcite and opal in drill cores from Tertiary volcanic rocks of the Yucca Mountain area, Nevada AU - Barney J. Szabo AU - T.K. Kyser PY - 1990 DO - 10.1130/0016-7606(1990)102<1714:aasico>2.3.co;2 UR - https://pubs.usgs.gov/publication/70016109 ID - 70016109 ER -