DescriptionTuff of Topaz Mountain Rhyolite 2 USGS ofr-98-0524.jpg English: Slightly edited USGS caption: Shows stratified tuff of the Topaz Mountain Rhyolite filling...
DescriptionAntelope Ridge 2 USGS ofr-98-0524.jpg English: Slightly edited USGS caption: Shows crossbedded tuff of Topaz Mountain Rhyolite at the south end of Antelope...