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Salt Evolution as a Control on Structural and Stratigraphic Systems: Northern Paradox Foreland Basin, Southeast Utah, USA

Authors: Trudgill, Bruce D.; Banbury, Nick; Underhill, John R.
Year: 2004
Journal: SOCIETY OF ECONOMIC PALEONTOLOGISTS AND MINERALOGISTS eBooks, pp. 669-700
DOI: 10.5724/gcs.04.24.0669
Keywords: Geology, Foreland basin, Pennsylvanian, Diapir, Structural basin, Paleontology, Unconformity, Facies, Permian, Geomorphology

Abstract

The Paradox Basin is an asymmetric foreland basin, developed along the southwestern flank of the Uncompahgre uplift in southeast Utah and southwest Colorado, USA. This large basin (265km by 190km) developed during the middle Pennsylvanian-Permian ancestral Rocky Mountain orogenic event. Salt structures in the northern Paradox Basin form a variety of structural styles ranging from deeply buried salt pillows to complexly faulted diapirs and salt walls exposed at the surface. Complex intra-formational unconformities and rapid lateral stratigraphic facies variations indicate that salt structures were active over at least 75 Ma.

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