Hermosa Group | |
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Stratigraphic range: Carboniferous | |
![]() Hermosa Formation near its type section, Hermosa, Colorado, US | |
Type | Group |
Sub-units | Honaker Trail Formation Paradox Formation Pinkerton Trail Formation |
Underlies | Cutler Group |
Overlies | Molas Formation |
Lithology | |
Primary | mudstone |
Other | shale, limestone |
Location | |
Coordinates | 37°25′52″N 107°50′13″W / 37.431°N 107.837°W |
Region | Utah |
Country | United States |
Type section | |
Named for | Hermosa Creek |
Named by | Cross and Spencer |
Year defined | 1899 |
The Hermosa Group is a group of geologic formations in Utah and Colorado. It preserves fossils dating back to the Carboniferous period.
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