Fountain Formation
E913336
The Fountain Formation is a Pennsylvanian-age sedimentary rock unit in Colorado and adjacent areas, best known for forming the dramatic red sandstone outcrops such as the Flatirons and the rocks at Garden of the Gods.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
sedimentary rock unit ⓘ |
| ageRange | Late Missourian to Virgilian (late Pennsylvanian) ⓘ |
| cementType | hematite-rich cement ⓘ |
| chronostratigraphicPosition | Pennsylvanian of the Late Paleozoic ⓘ |
| color | red ⓘ |
| contains | arkosic sandstone ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| depositionalEnvironment |
alluvial fan
ⓘ
fluvial ⓘ |
| exposedIn |
Boulder, Colorado area
NERFINISHED
ⓘ
Front Range of Colorado NERFINISHED ⓘ Garden of the Gods, Colorado Springs NERFINISHED ⓘ Red Rocks Park, Colorado NERFINISHED ⓘ |
| formsLandform |
Flatirons
NERFINISHED
ⓘ
Garden of the Gods monoliths NERFINISHED ⓘ Red Rocks amphitheater cliffs NERFINISHED ⓘ |
| formsPartOf | southern Rocky Mountains geologic framework ⓘ |
| geologicAge | Pennsylvanian ⓘ |
| geologicPeriod | Carboniferous NERFINISHED ⓘ |
| grainSizeRange | from conglomerate to fine sandstone and siltstone ⓘ |
| knownFor |
Flatirons near Boulder, Colorado
NERFINISHED
ⓘ
dramatic red sandstone outcrops ⓘ rock formations at Garden of the Gods ⓘ |
| lithology |
conglomerate
ⓘ
sandstone ⓘ shale ⓘ siltstone ⓘ |
| namedFor | Fountain, Colorado area NERFINISHED ⓘ |
| notableFeature |
cross-bedded sandstone
ⓘ
large clast conglomerates near mountain front ⓘ |
| orientationOfMajorOutcrops | steeply dipping hogbacks ⓘ |
| overlies | Precambrian basement rocks in the Front Range ⓘ |
| paleogeography | proximal to uplifted Ancestral Front Range ⓘ |
| partOf | Colorado stratigraphy ⓘ |
| primaryColorCause | iron oxide cement ⓘ |
| region |
Colorado
NERFINISHED
ⓘ
adjacent areas of the central United States ⓘ |
| sourceArea | Ancestral Rocky Mountains NERFINISHED ⓘ |
| stratigraphicUnitOf | Ancestral Rocky Mountain basin fill ⓘ |
| subdivisionOfPeriod | Pennsylvanian subperiod ⓘ |
| tectonicSetting | foreland basin adjacent to Ancestral Rockies ⓘ |
| thickness | hundreds of meters ⓘ |
| typeOfSedimentaryRock | clastic GENERATED ⓘ |
| usedFor | geologic field education in Colorado ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.