Fountain Formation

Fountain Formation

The Fountain Formation is a conglomerate sandstone or arkose, red or reddish-gray in color, that is found in various locations in the state of Colorado in the USA, along the east side of the Front Range of the Rocky Mountains. Especially notable examples of this formation are the Flatirons, the Garden of the Gods, Roxborough State Park, and Red Rocks Park and Amphitheater.

Origin of name

The "Fountain Formation" is named for the city of Fountain, Colorado in El Paso County, one of many places where it can be found.

Geology

Rocks of the "Fountain Formation" are considered to be of Pennsylvanian age, between 290 and 296 million years old. They were formed by the erosion of the Ancestral Rocky Mountains, and their color and composition reflects those of the granites and gneisses from which they were eroded.

References

* [http://www.gravmag.com/fountain.html Geology of the Fountain Formation]


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