Colorado

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Pikes Peak, El Paso County

Precambrian (Proterozoic) Pikes Peak Granite

The Gateway (Permian age Lyons Sandstone)	Paleozoic Fortress (Pennsylvanian/Permian)	Aerial View of Oligocene Volcano/Flows
Garden of the Gods, El Paso County		Lake City-Ouray-Ridgway Area Gunnison, Hinsdale and Ouray Counties (Umcompahgre Peak is shown by arrow)

Great Sand Dunes National Monument, Alamosa and Saguache Counties

Quaternary eolian deposits (fancy name for sand dunes).  Sangre de Cristo Mountains are in the Background.

Aerial View of Deeply Incised River Valleys Along the Colorado-Utah Border (Mesa County, CO and Grand County, UT)

East > West: Various Triassic > Jurassic > Cretaceous rocks in view.  Some Cambrian and Precambrian basement rocks are exposed at base of canyons.

(left: unlabeled image     right:  labeled image for reference frame)

Pawnee Buttes National Grasslands, Weld County

Oligocene-Miocene White River Formation (photos by Prof. Norm King, Univ. So. Indiana).

Precambrian (Proterozoic) Granite	Cache La Poudre River valley, Larimer County	Along Trail Ridge Road, Larimer County

Rocky Mountains National Park, taken in Larimer County

Precambrian (Proterozoic) granites