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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 .
Roxborough State Park, a 3,339-acre (13.51 km 2) [2] Colorado State Park, is known for dramatic red sandstone formations. It is located in Douglas County 25 miles (40 km) south of Denver, Colorado. In 1980 it was recognized as a National Natural Landmark because of the number of ecological systems and geological formations. It is also a State ...
The USGS convention has been to use Colorado Group where the rocks are further divided into formations, Colorado Formation where no beds are developed enough to be mapped as formations, and Colorado Shale where the unit is composed of little more than shale with no distinctive structures (such as in north-central Montana).
The Flatirons are rock formations in the western United States, near Boulder, Colorado, consisting of flatirons.There are five large, numbered Flatirons ranging from north to south (First through Fifth, respectively) along the east slope of Green Mountain (elev. 8,148 ft or 2,484 m), and the term "The Flatirons" sometimes refers to these five alone.
Colorado National Natural Landmarks (clickable map) There are 17 National Natural Landmarks in U.S. state of Colorado , one of which extends into Wyoming . They cover areas of geological, biological and historical importance, and include lakes, mountains, rock formations and numerous fossil sites.
Throughout Colorado's geologic history, rocks have often been deformed, metamorphosed and overprinted, obscuring the ancient record. Beginning 1.7 billion years ago granite and pegmatite intruded. The Routt Plutonic Suite is dated to 1.66 to 1.79 billion years old and is an important rock formation in Rocky Mountain National Park and Buffalo ...
The Rich Fountain Formation is a geologic formation in Missouri. It preserves fossils dating back to the Ordovician period . The Rich Fountain was proposed in 1944 as the equivalent of the lower part of the Jefferson City Formation in a new Jefferson City Group .