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GEOREF RECORD

Preliminary analysis of depositional environments of tar sand host rocks, Uinta Basin, eastern Utah

Danny J. Wyatt
Preliminary analysis of depositional environments of tar sand host rocks, Uinta Basin, eastern Utah (in AAPG annual convention with divisions SEPM/EMD/DPA, Anonymous)
AAPG Bulletin (May 1982) 66 (5): 645

Abstract

Four major tar sand bodies in the Uinta basin were examined in terms of their depositional environments: (1) the Duchesne River and Mesaverde Formations at the Asphalt Ridge deposit near Vernal, Utah; (2) the Wasatch and Green River Formations at the Sunnyside deposit near Sunnyside, Utah; (3) the Green River Formation of the Hill Creek deposit in the southern Uinta basin; and (4) the Green River Formation in the P.R. Spring deposit of the southeastern Book Cliffs. The Mesaverde Formation at Vernal is interpreted as a fluvial deposit, based on the discontinuous geometry, and the presence of large-scale trough cross-beds which grade vertically into smaller trough cross-beds and tabular foreset beds. The lower Duchesne River Formation was deposited in distributary channels, based on the discontinuous geometry, large-scale trough cross-beds, contorted bedding, and clay-chip zones. This facies is overlain by a meandering flood-plain sequence of sandstones and red shales. The Wasatch Formation in the Sunnyside area is comprised of stream-mouth bars, point bars, and both active and partial abandonment channel fill. The Green River Formation at Sunnyside was deposited in distributary channels as evidenced by a scoured contact, calcareous clay clasts, large-scale convoluted bedding, and the geometry. This facies grades to the southeast into more laterally continuous sands in the P.R. Springs area. These sands reflect delta front deposition.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 66
Serial Issue: 5
Title: Preliminary analysis of depositional environments of tar sand host rocks, Uinta Basin, eastern Utah
Title: AAPG annual convention with divisions SEPM/EMD/DPA
Author(s): Wyatt, Danny J.
Author(s): Anonymous
Affiliation: Mobil Oil Corp., Denver, CO, United States
Pages: 645
Published: 198205
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Meeting name: AAPG annual convention with divisions SEPM/EMD/DPA
Meeting location: Calgary, AB, CAN, Canada
Meeting date: 19820627June 27-30, 1982
Summary: Y
Accession Number: 1983-044306
Categories: Economic geology, geology of energy sources
Document Type: Serial Conference document
Bibliographic Level: Analytic
N40°00'00" - N40°30'00", W111°19'60" - W109°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1983
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