Title: Oligocene and Miocene volcanic rocks in the central Pioche-Marysvale igneous belt, western Utah and eastern Nevada
Subjects: Geology, Magmatism, Stratigraphic Geology, Volcanic ash, tuff
Places: Marysvale Region, Needles Range Group (Utah and Nev.), Nevada, Pioche Region, Utah, Wah Wah Mountains
Time periods: Miocene, Oligocene