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Depositional And Stratigraphic Significance Of Marine, Green-Clay, Mineral Facies In The Lower-Middle Mississippian Borden And Fort Payne Formations, Western Appalachian And Eastern Illinois Basins, Kentucky, Devi Bhagabati Prasad Udgata

University of Kentucky Doctoral Dissertations

Detailed study of strata associated with the glauconite-rich Floyds Knob Bed in the western Appalachian and eastern Illinois basins have corroborated previous interpretations that the unit is a widespread, largely synchronous marker horizon. However, in some areas there are multiple glauconite beds; in others a distinct bed is lacking, but the glauconite is dispersed throughout many beds, forming an interval rather than a distinct bed. In Kentucky and adjacent states, the Floyds Knob interval, in upper parts of the Lower-Middle Mississippian Borden-Grainger delta sequence and in lower parts of the Fort Payne carbonate sequence, was deposited at the end of …