PROJ00455

• Contract/PO #: C153583
• Contractor Name: Ute Water Conservancy District
• Water District: 0
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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Uinta. Green River. and Wasatch Formations (Continued)
Mahogany oil shale bed
Douglas Creek Member; brown and gray sandstone and siltstone, green shale, and brown oolitic limestone
Upper tongue; simplified from Cashion (1967.pl. I) showing more details on intertonguing between Douglas Creek
Member (Tgd) and Renegade Tongue (Twr) of Wasatch Formation
Lower tongue; coextensive with Renegade Tongue (Twr) and where the lower tongue is thin it is mapped with the
Renegade
Wasatch Fonnation:

m -

Tgd -
Tgdu-

Tgdl-

Twr-
Tw -

Renegade Tongue; brown and gray sandstone and siltstone and red, green, and gray shale
Main body; lithology similar to that of Renegade Tongue

Green River. Wasatch. and Ohio Creek Formations
Green Riller Fonnation:

Tge -
Tgp -

Evacuation Creek Member; gray and yellow-brown madstone, siltstone, sandstone, and tuff
Parachute Creek Member; gray and yellow-brown madstone and tuff and dark-gray and blue-gray oil shale
Mahogany oil shale bed; dark gray and blue gray ledge-fonning oil shale
Garden Gulch Member; dark brown and gray flaky shale and brown sandstone and limestone
Douglas Creek Member; gray and brown sandstone, siltstone, and limestone and gray and green shale
Anvil Points Member; gray and brown sandstone, siltstone, and limestone and gray and green shale
Wasatch and Ohio Creek Formations; red, gray, and brown sandstone and siltstone and red, gray, and green shale.
Basal conglomerate (Ohio Creek Formation present locally)

m -

Tgg-
Tgd -
Tga -
Two -

Mancos Shale
Dark gray to black soft shale; thin sandstone beds al variow horizons. Upper beds inlerlongue with, and grade verlically into,
the Cast/egate Sandstone (Kc) and Blackhawk Fonnation (Kb). Maximum thickness about 4,000 feel
Km - Mancos Shale undifferentiated
Kmu - Upper shale member
Kmf - Ferron Sandstone Member; fine grained, thin-bedded sandstone and sandy shale; occurs near base of Mancos Shale;
mapped with Mancos Shale undifferentiated (Km) along northeastern flank of Uncompahgre uplift

PROJECT NO.
33701

DATE
1/111

REVISION
o

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STEFFEN ROBERTSON & KIRSTEN (U.S.)
Consulting Engineers & Scientists

PREPARED BY,

FIGURE 3.38

GEOLOGIC MAP
LEGEND