Capitol Reef National Park, Wayne County. Photographer: Tyler Knudsen Serrated monoliths of Jurassic
Colliding and shifting plates, with the addition of periods of being underwater, being spewed out by volcanoes, going underwater again, ...
A geothermal hotspot in Lassen Volcanic National Park. Photo: © jankgo/Flickr through a Creative Commons license
Cima Dome in the Mojave National Preserve is a 1,500 foot high granitic mountain that has eroded down to its nearly perfectly symmetrical pediment surface.