Laramide tectonics and humid alluvial fan sedimentation, Ne Uinta uplift, Utah and Wyoming

Journal Article · Sat May 01 00:00:00 EDT 1993 · Journal of Sedimentary Petrology; (United States)

OSTI ID:6383847

Crews, S G; Ethridge, F G ^[1]

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1. Colorado State Univ., Fort Collins (United States)

This paper describes and interprets a sequence of syntectonic conglomerates and sandstones shed from the northeast flank of the Uinta Mountains during an early Eocene phase of the Laramide orogeny. The study area centers around a cuesta 10 km long known as Richards Mountain located on the Utah-Wyoming border about 3 km north of the Uinta fault zone. Conglomerates and sandstones of the basal Wasatch Formation that crop out on Richards Mountain constitute an exhumed, strike-parallel deposit of carose sediments that formed adjacent to the rising Uinta Mountains uplift. These rocks are an example of sedimentation in a proximal, humid piedmont setting and provide clues to the relative rate and timing of a major cycle of uplift and erosion of the Uinta Mountains. Topics specifically addressed in this study include: (1) sedimentary facies, fluvial architecture, depositional processes, paleocurrents, and grain-size trends at Richards Mountain, based on detailed measured sections; (2) tectonic significance of the richards Mountain sequence, including tectonic and geomorphic explanations for several scales of cyclicity within the sequence; and (3) Early Paleogene tectonic and depositional history of the northeastern flank of the Uinta Uplift and the southern Green River Basin.

• OSTI ID: 6383847
• Journal Information: Journal of Sedimentary Petrology; (United States), Vol. 63:3; ISSN 0022-4472
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
02 PETROLEUM
03 NATURAL GAS
ALLUVIAL DEPOSITS
DEPOSITION
STRATIGRAPHY
UTAH
WYOMING
CONGLOMERATES
EOCENE EPOCH
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
GEOMORPHOLOGY
OROGENESIS
PETROLOGY
RESERVOIR ROCK
SANDSTONES
TECTONICS
CENOZOIC ERA
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
TERTIARY PERIOD
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