"Intrusions (Geology) Nevada." . . "Metamorphic rocks Utah." . . "Metamorphic rocks." . . . . "Metamorphic rocks Nevada." . . "Utah." . . . . . . . "K-Ar Ages of Jurassic to Tertiary Plutonic and Metamorphic Rocks, Northwestern Utah and Northeastern Nevada" . . . . . . . . . . . . "Isotopic data are used to interpret emplacement ages for plutons and ages for metamorphic episodes within a region encompassing the northwest corner of Utah and adjacent eastern Nevada and southern Idaho." . . . . . . . . . . . . . . . "K-Ar ages of Jurassic to Tertiary plutonic and metamorphic rocks, northwestern Utah and northeastern Nevada isotopic data are used to interpret emplacement ages for plutons and ages for metamorphic episodes within a region encompassing the northwest corner of Utah and adjacent eastern Nevada and southern Idaho" . . . . . . "K-Ar ages of Jurassic to Tertiary plutonic and metamorphic rocks, northwestern Utah and northeastern Nevada" . . . . . . "Nevada (Nordost)" . . "Intrusions (Geology) Utah." . . "Kristallines Gestein" . . "Geological Survey (U.S.)" . . "Geological Survey (U.S.)," . "Nevada." . . "Kalium-Argon-Methode" . . "Intrusions (Geology)" . . "Utah (Nordwest)" . . "Potassium-argon dating." . .