Skip to Main Content

A comprehensive suite of radiometric age determination clearly defines three periods of igneous activity in the Tooele 1° × 2° quadrangle, Utah. These periods and the associated igneous activity are (1) Jurassic calcalkaline plutonism, (2) late Eocene to early Miocene calc-alkaline plutonism and volcanism, and (3) middle and late Miocene bimodal basaltic and rhyolitic volcanism. These periods are recognized throughout the entire Great Basin. A characteristic metal or suite of metals is associated with each period. Tungsten skarns are commonly related to Jurassic plutonism; base-metal and precious-metal deposits are characteristic of the late Eocene to early Miocene igneous activity; and beryllium, fluorine, and uranium are elements associated with silicic rocks of the middle and late Miocene period of igneous activity.

You do not currently have access to this chapter.

Figures & Tables





Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal