Alluvial architecture and predictive modeling of the late cretaceous John Henry member, Straight Cliffs Formation, Southern Utah

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Publication Type thesis
School or College College of Mines & Earth Sciences
Department Geology & Geophysics
Author Gooley, Jared Thomas
Title Alluvial architecture and predictive modeling of the late cretaceous John Henry member, Straight Cliffs Formation, Southern Utah
Date 2010-12
Description Five detailed measured sections (each >175 m), two outcrop gamma ray logs, 2100 paleocurrent measurements, and detailed facies interpretation of high-resolution composite photographs were used to document the vertical and lateral variations of the alluvial architecture of the John Henry Member of the Upper Cretaceous Straight Cliffs Formation (southwest Kaiparowits Plateau, southern Utah). These data interpretations correlate to 24 measured sections and logged cores from previous work in fluvial and paralic facies in the John Henry Member and complement previous correlation to marginal marine facies ~60 km basinward of the study area. The proximal fluvial strata of the ~230 m-thick member is divided into seven depositional units (DU) from stratigraphic base to top: DU-0, tidally-influenced channel belts; DU-1, highly amalgamated, laterally accreting channel belts with tidally-influenced channel belts in the upper section; DU-2, laterally extensive (>1.2 km wide), laterally accreting channel belts; DU-3, isolated channel belts (<150 m) embedded within thick floodplain muds; DU-4, clusters of laterally restricted (<500 m), laterally accreting channel belts and isolated channel belts; DU-5, laterally extensive, locally amalgamated, downstream accreting channel belts; and DU-6, highly amalgamated, downstream accreting channel belts. An unconformable surface at the base of DU-1 demonstrates a basinward shift in facies and is interpreted to represent erosion during base level fall.
Type Text
Publisher University of Utah
Subject Alluvial architecture; John Henry Member; Kaiparowits plateau
Subject LCSH Geology -- Utah; Straight Cliffs Formation (Utah)
Dissertation Institution University of Utah
Dissertation Name MS
Language eng
Rights Management © Jared Thomas Gooley
Format Medium application/pdf
Format Extent 43,345,548 bytes
Source Original in Marriott Library Special Collections, QE3.5 2010 .G66
ARK ark:/87278/s66d67hd
Setname ir_etd
ID 192509
Reference URL https://collections.lib.utah.edu/ark:/87278/s66d67hd