Geology and mineral deposits of the Thomas and Dugway Ranges, Juab and Tooele Counties, Utah

Abstract

The Thomas and Dugway Ranges are two small desert ranges in Juab and Tooele Counties, western Utah.The area mapped, the Dugway Range quadrangle and the northern third of the Topaz Mountain quachangle, includes most of both ranges.This area is bounded by parallels :39°40' and 40° and meridians 113° and 113°15' (fig.1).The western boundary of the area is about 4;) miles east of the lJtah-N evada State line and the eastern boundary is about Several cloudbursts oecurred on Spor Mountaain during July 1V51.The runoff from one down a normally dry wash was more than 7 feet deep at a curve where the wash was 125 feet wide.The runoff from this same cloudburst widened a 4-foot-deep wash from 12 to 80 feet.Roads were washed out or covered with rock debris.Several boulders as large as. 4 feet across Average monthly and annual precipitation, In inches Dosoret •---------------4, 541 0. 47 0. 37 0. 70 0.85 0.