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The Fountain Formation is a Pennsylvanian bedrock unit consisting primarily of conglomerate, sandstone, or arkose, in the states of Colorado and Wyoming in the United States, along the east side of the Front Range of the Rocky Mountains, and along the west edge of the Denver Basin.
Other Colorado examples of Fountain Formation geology include nearby Roxborough State Park, Garden of the Gods near Colorado Springs, and the Flatirons near Boulder. The rocks were formed about 290-296 million years ago when the Ancestral Rocky Mountains were eroded during the Pennsylvanian epoch .
The Flatirons were subsequently exposed by erosion. Other manifestations of the Fountain Formation can be found in many places along the Colorado Front Range, including Garden of the Gods near Colorado Springs, Roxborough State Park in Douglas County, and Red Rocks Amphitheatre near Morrison.
Roxborough State Park is a designated Colorado Natural Area and National Natural Landmark for its 300-million-year-old red sandstone Fountain Formations that tilt at a 60-degree angle. The park includes great examples of exposed Precambrian to Late Mesozoic hogback, monolithic and spire formations from the Permian , Pennsylvanian and Cretaceous ...
Wind, gravity, rainwater, snow, and ice-melt supplied rivers that ultimately carved through the granite mountains and eventually led to their complete removal. The sediment from these mountains lies in the very red Fountain Formation today. Red Rocks Amphitheatre outside of Denver, Colorado, is set within the Fountain Formation. [2]
The White River Formation is found in the Northeastern corner of the Colorado, and was deposited between ~37.2 and ~30.8 Ma, encompassing parts of the late Eocene and early Oligocene. The formation is composed primarily of claystones , mudstones , and siltstones , within which a variety of fossil organisms, collectively referred to as the White ...
Site showcases typical Colorado Front Range sedimentary strata, as well as erosion of Fountain Formation sandstone in unusual patterns, extensive fossil remains and unusual plant populations. Russell Lakes: 1975: Saguache: Federal, private
The rockshelter is sheltered by distinctive 60 foot "red rock" formation, caused by an uplift of Fountain Formation rock. The Morrison area is between the locations of two important early people: Desert societies of the Great Basin west of the Rocky Mountains and those of the Great Plains, which lies to the east of the Rocky Mountain foothills.