Geology and energy resources of southwest Sego Canyon quadrangle, Grand County, Utah

Conference · Sun Jul 01 04:00:00 EDT 1984 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5536273

Willis, G C

The Southwest Sego Canyon 7 1/2-minute quadrangle is located in the Book Cliffs of eastern Utah and contain an exposed sequence of Upper Cretaceous through Eocene rocks. Exposed units include rocks from the upper Mancos Shale through the undifferentiated Wasatch Formation and were deposited during the final regressive phase of the Mancos sea. They represent shallow open-marine, wave-dominated deltas, and lower through upper flood-plain depositional environments. Coal has been produced from seams up to 8 ft (2.5 m) thick, but reserves are largely undeveloped. Hydrocarbons have been produced from adjacent areas, and similar structural and stratigraphic traps may exist in the quadrangle. The area is crossed by low-profile, north-northwest-trending folds. The Thompson anticline is a faulted, salt-movement produced fold. The Cisco dome is caused by minor Laramide adjustment on the Uncompahgre fault. The quadrangle overlies the Paradox basin margin and may have deeper Paleozoic related traps. Evidence of several structural events exists within the stratigraphic sequence. The Farrer Formation thins over the nose of the Cisco dome and documents Campanian movement on the Uncompahgre fault. Tuscher Formation current directions shift from east to northeast, indicating initiation of uplift on the San Rafael swell. Overlying conglomerate beds follow a 15-m.y. erosional hiatus and show sufficient uplift on the Uncompahgre fault to expose Mississippian rocks. Ratios of sandstone to shale in Wasatch Formation show derivation from the Uncompahgre uplift and a gradual reduction of the Uncompahgre highland.

• Research Organization: Utah Geological and Mineral Survey, Salt Lake, City
• OSTI ID: 5536273
• Report Number(s): CONF-8408161-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 68:7
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
011000 -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALLUVIAL DEPOSITS
CENOZOIC ERA
COAL DEPOSITS
CRETACEOUS PERIOD
DEPOSITION
FEDERAL REGION VIII
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC TRAPS
GEOLOGY
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PETROLEUM DEPOSITS
RESOURCES
ROCKS
SALT DEPOSITS
SANDSTONES
SEDIMENTARY ROCKS
TERTIARY PERIOD
USA
UTAH