Date of Award
Master of Science
Roy Van Arsdale
The stratigraphy and structure beneath Dyer County, Tennessee, were mapped using lignite exploration wells, water wells, US Army Corps of Engineers borings, and previously interpreted seismic reflection lines to better understand the seismic threat of the underlying New Madrid seismic zone structures. New Madrid seismic zone earthquakes are concentrated on faults of the Reelfoot rift, one system of which is the northwest-trending Lake County uplift and Tiptonville dome, which extends in northwestern Tennessee through Lake and Obion counties into Dyer County. Structure contour maps of the tops of the Paleozoic, Cretaceous, and Eocene sections were made to produce cross-sections and a 3-D model, which illustrate the subsurface geology of the county. Quaternary isopach maps were made of the liquefiable Mississippi, Obion, and Forked Deer river floodplain sediments. Cross-sections of the near-surface stratigraphy above the southeastern Reelfoot rift margin faults reveal potential displacement of Pleistocene Forked Deer river terraces.
Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Reichenbacher, Renee Marie, "Geologic Mapping of Dyer County, Tennessee" (2020). Electronic Theses and Dissertations. 2137.