Electronic Theses and Dissertations

Identifier

6648

Date

2020

Document Type

Thesis

Degree Name

Master of Science

Major

Earth Sciences

Concentration

Geology

Committee Member

Randel Cox

Committee Member

Roy Van Arsdale

Committee Member

Youngsang Kwon

Abstract

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.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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