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Mineral Resources > Online Spatial Data > Geology > by state > Colorado

Chugwater Fm

Red sandstone, siltstone, shale, and local limestone and gypsum
StateColorado
NameChugwater Fm
Geologic agePhanerozoic | Mesozoic | Triassic
Original map label@ch
Primary rock typesandstone
Secondary rock typemudstone
Other rock typeslimestone; evaporite
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Carbonate > Limestone
Incidental
Sedimentary > Chemical > Evaporite > Gypsum
Map references
Tweto, Ogden 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000.
Unit references
Tweto, Ogden 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000.
Geographic coverageGrand - Jackson - Routt

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