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2: Sandstones and Utah’s canyon country: Deposition, diagenesis, exhumation, and landscape evolution

By
David Loope
David Loope
Department of Earth & Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA
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Richard Kettler
Richard Kettler
Department of Earth & Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA
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Kendra Murray
Kendra Murray
Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA
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Joel Pederson
Joel Pederson
Department of Geology, Utah State University, Logan, Utah 84322, USA
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Peter Reiners
Peter Reiners
Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA
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Published:
January 01, 2016

Abstract

South-central Utah’s prominent sandstones and deeply dissected landscapes are the focus of this four-day trip, which begins and ends in Grand Junction, Colorado. Studies of the apatite grains in sandstones adjacent to igneous intrusions are revealing new information on the timing and rate of Cenozoic erosion. Iron-oxide cemented concretions in other rocks record how reduced-iron carbonates and subsurface microbes interacted when near-surface, oxygenated waters started to flush the reducing, CO2-rich waters from Colorado Plateau aquifers. New geochronologic techniques that are being applied to the plateau rocks have the potential to expand our knowledge of how diagenetic episodes relate to the evolving topography of this classic geologic setting.

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Contents

GSA Field Guide

Unfolding the Geology of the West

Stephen M. Keller
Stephen M. Keller
Colorado Geological Survey Colorado School of Mines 1801 19th Street Golden, Colorado 80401, USA
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Matthew L. Morgan
Matthew L. Morgan
Colorado Geological Survey Colorado School of Mines 1801 19th Street Golden, Colorado 80401, USA
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Geological Society of America
Volume
44
ISBN print:
9780813756448
Publication date:
January 01, 2016

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