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Mancos Shale

In northwest and west-central: Intertongues complexly with units of overlying Mesaverde Group or Fm; lower part consists of a calcareous Niobrara equivalent and Frontier Sandstone and Mowry Shale Members; in areas where the Frontie
StateColorado
NameMancos Shale
Geologic agePhanerozoic | Mesozoic | Cretaceous
Original map labelKm
Primary rock typeshale
Secondary rock typesandstone
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Shale
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 coverageArchuleta - Conejos - Delta - Dolores - Eagle - Garfield - Gunnison - Hinsdale - La Plata - Mesa - Mineral - Moffat - Montezuma - Montrose - Ouray - Pitkin - Rio Blanco - Routt - Saguache - San Juan - San Miguel

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=COKm;0
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