Apparent Paleozoic ages from southern Arizona: K-Ar and Rb-Sr geochronology

Mineral District, Geochronology, [Sierra Estrella granite][Montezuma granite] - Middle Proterozoic, Sierra Estrella pegmatite, (Yavapai granite gneiss)granite of Olea Ranch(Mohave Border granite)(County Line batholith)(Burro Creek granite)(Nothing granite) - Middle Proterozoic, (Sacaton monzonite porphyry)(Three Peaks monzonite)Sacaton Peak granite - Cretaceous, Sierra Estrella schist - Early Proterozoic(?),