Master's Theses

Department

Geosciences

Degree Name

Master of Science (MS)

Abstract

Sedimentologic, petrographic, and taphonomic evidence indicates that the strata exposed at the Minium Quarry, Graham County, Kansas (SE ¼, Section 34, T7S, R25W) represent a sheet-flood deposit within a stream-dominated environment. These fossiliferous and conglomeratic muddy sandstone are part of the late Miocene Ash Hollow Formation of the Ogallala Group. The muddy sandstones contain three separate bone horizons containing rhinoceros, horse, camel, turtle, and rodent remains that exhibit weathering cracks and carnivore markings. Also present in the mudstones and muddy sandstones are fresh-water mollusks and floral remains of grasses, sedges, borages, chenopods, hackberries, and pondweeds. Other floral structure remains include leaves, stems, roots, and wood from various plants. The plant remains are dominated by sedges, plants that primarily inhabit hydric environments. Lastly, paleoclimates ranged from semi-arid to subtropical.

Advisor

Ken Neuhauser

Date of Award

Spring 1992

Document Type

Thesis - campus only access

Rights

© 1992 Julie M. Churchill

Comments

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