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Biostratigraphy and paleoenvironments of the Cretaceous-Tertiary (K-T) North Horn Formation in the Wasatch Plateau, central Utah

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Title Biostratigraphy and paleoenvironments of the Cretaceous-Tertiary (K-T) North Horn Formation in the Wasatch Plateau, central Utah
Publication Type thesis
School or College College of Mines & Earth Sciences
Department Geology & Geophysics
Author Difley, Rose Luverne
Date 2002
Description The 403-m thick North Horn Formation at the type section in Emery; County, Utah, is divided into three lithologic units that reflect changing; environmental conditions below, across and above the Cretaceous-Tertiary (K-T); boundary: (1) a lower variegated unit, (2) a middle carbonaceous unit, and (3) an; upper variegated unit. The middle unit lithology suggests an environmental; change from a semi-arid floodplain to a lacustrine-wetland setting that may have; been responsible for the disappearance of part of the lower fossil assemblage,; such as Alamosaurus, above the top of the lower unit. The remaining; Cretaceous taxa, including dinosaurs, that inhabited lacustrine and wetland; environments, disappeared during the deposition of the middle unit below the KT; boundary.
Type Text
Publisher University of Utah
Language eng
Rights Management (c) Rose Luverne Difley
Format application/pdf
Format Medium application/pdf
ARK ark:/87278/s6fh2x5x
Setname ir_etd
ID 2061267
Reference URL https://collections.lib.utah.edu/ark:/87278/s6fh2x5x
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