TY - RPRT TI - 40Ar/39Ar, K-Ar, Rb-Sr whole-rock and mineral ages, chemical composition, strontium, oxygen and hydrogen isotopic systematics of Jurassic Humboldt lopolith and Permian(?) and Triassic Koipato Group rocks, Pershing and Churchill Counties, Nevada AU - Ronald Wayne Kistler AU - Robert C. Speed PY - 2000 DO - 10.3133/ofr00217 UR - https://pubs.usgs.gov/publication/ofr00217 ID - ofr00217 ER -