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

Morrison Fm and Junction Creek Sandstone

In Gunnison River area east of wedgeout of all units of Wanakah Fm (Jmw) except the Junction Creek Member
StateColorado
NameMorrison Fm and Junction Creek Sandstone
Geologic agePhanerozoic | Mesozoic | Jurassic
Original map labelJmj
Primary rock typemudstone
Secondary rock typesandstone
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone
Sedimentary > Clastic > Mudstone > Claystone
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 coverageGunnison - Saguache

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