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

Green River Fm--Lower Part

Shale, sandstone, marlstone, and limestone in Anvil Points, Garden Gulch, and Douglas Creek Members; in Piceance basin
StateColorado
NameGreen River Fm--Lower Part
Geologic agePhanerozoic | Cenozoic | Tertiary
Original map labelTgl
Primary rock typemudstone
Secondary rock typeshale
Other rock typessandstone
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > Marlstone
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 coverageGarfield - Mesa - Moffat - Rio Blanco

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