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prepared in cooperation with the MISCELLANEOUS INVESTIGATIONS SERIES GEOLOGICAL AND MINERAL SURVEY FOLIO OF THE UINTA AND PICEANCE BASIN PROVINCE MAP I-2184-A (sheet 1 of 2) UTAH

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

7

6.5

6

Anvil Points and Garden Gulch Members of 5.5

Uinta Formation

5 Top of Mahogany oil-shale zone of Parachue Creek Member Parachute Creek Member

4.5 Formation Green River Cow Ridge Member

Parachute Creek Member 4

Garden Gulch Member

Fort Union Formation 3.5

Lion Canyon Sandstone Member of

Williams Fork Formation 3

Mesaverde Group Mesaverde Group undifferentiated Trout Creek Sandstone Member of Iles Formation Sego Sandstone of Mesaverde Group Buck Tongue of main Main body of the Mancos Group body of Mancos Group 2.5 Castlegate Sandstone Sego Sandstone of of Mesaverde Group Mesaverde Group Iles Formation FIGURE 1. Map showing locations of control points for stratigraphic and time-stratigraphic cross section A-A’. Purple areas show uplifts underlain mainly by pre- rocks.

Buck Tongue of main body of Mancos Group

Buck Tongue of main body of Mancos Group Castlegate Sandstone of Mesaverde Group Loyd Sandstone Bed of Buck Tongue 2

1.5 Main body of Mancos Group

Mancos Group

Main body of the Mancos Mancos Group Group 1

Frontier Formation Mowry Shale Morrison Dakota S Formation andstone and Stump Stump Formation Formation Sundance

Formation DATUM BELOW 0.5 Entrada Sandstone 1000 Carmel Morrison Formation Dakota Sandstone Glen Canyon Formation Glen Canyon Sandstone Sandstone Morrison Formation X METERS Chinle Formation Entrada Sandstone Chinle Formation State Bridge Formation State Bridge State Bridge DATUM-TOP OF THE Formation FORMATION, THE WEBER SANDSTONE, THE OQUIRRH GROUP, AND THE Phosphoria and Park City Formations KIRKMAN

Weber Sandstone Maroon Formation Weber Sandstone Maroon Formation Morrison Maroon Formation Formation BELOW DATUM BELOW 1000 0.5 METERS X METERS

Morgan Formation Eagle Valley Evaporite

1

Eagle Valley Manitou Dolomite and Evaporite Dotsero Formation Madison Limestone Leadville Limestone Eagle Valley Minturn Evaporite Formation Chaffee Group Belden Shale Belden Shale 1.5 Leadville Limestone Manitou Dolomite and Dotsero Formation Chaffee Group STRATIGRAPHIC AND TIME-STRATIGRAPHIC Sawatch Quartzite CROSS SECTIONS OF PHANEROZOIC ROCKS ALONG LINE A-A’,

UINTA AND PICEANCE BASIN AREA-EAGLE BASIN, COLORADO, 2 TO EASTERN BASIN AND RANGE AREA, UTAH

SCALE 1:500 000 2.5

STRATIGRAPHIC CROSS SECTION

Samuel Y. Jackson and Ronald C. Johnson 3

COMPILATION CONDUCTED 1988-1989 MANUSCRIPT APPROVED FOR PUBLICATION AUGUST 6, 1990