Unconformities

Download

Angular unconformity, Grand Canyon, Arizona

Angular unconformity: Cambrian rock overlying tilted Precambrian sedimentary rock in the Grand Canyon, Arizona.Angular unconformity: Cambrian rock overlying tilted Precambrian sedimentary rock in the Grand Canyon, Arizona.

Download

Great unconformity on the west side of the Teton Range, WyomingThe yellow arrow points to the contact between the Cambrian Sandstone and underlying Precambrian metamorphic rock... the Great unconformity.

Download

Great unconformity in SW Montana.Photo of Cambrian Flathead Sandstone overlying Proterozoic gneiss in SW Montana.

Download

Angular unconformity at Ryan MesaAngular unconformity at Ryan Mesa: 4 Ma basalt flows overlying faulted Artist Drive (left) and Furnace Creek (right) formations. (ID: 140426-51)

Download

Angular unconformity and channel deposit, central Utah.Angular unconformity and channel deposit, central Utah.

Download

Angular unconformity and channel deposit, central Utah.Angular unconformity and channel deposit, central Utah. Henry Mtns in background.

Download

Angular unconformity,central Utah.Angular unconformity central Utah.

Download

Angular unconformityAngular unconformity between tilted Precambrian meta-sedimentary rock (marble) and Late Cenozoic conglomerate (a mudflow deposit). Photo is about 2m across.

Download

Nonconformity, ColoradoNonconformity (a type of unconformity) between Cambrian Sandstone and underlying Precambrian metamorphic rock, Glenwood Canyon, Colorado. This unconformity is frequently referred to as the "Great Unconformity"

Download

Great Unconformity, Colorado.Great Unconformity, between Cambrian Sandstone and Precambrian basement rock along the Eagle River, Colorado. Note old mine workings.

Download