Dissertation/Thesis Abstract

Investigation and Characterization of Features on a Cretaceous-Paleogene Seismic Horizon in Northern Louisiana
by Strong, Martell, M.S., University of Louisiana at Lafayette, 2013, 111; 1553871
Abstract (Summary)

Features observed on a seismic horizon at or near the Cretaceous-Paleogene boundary in a roughly 200 square km (77 square miles) 3D seismic survey from northern Louisiana resemble large subaqueous dunes or “mega-ripples.” It is hypothesized that these features may represent subaqueous dunes emplaced by tsunami waves generated by the end-Cretaceous Chicxulub Impact event on the Yucatán Peninsula. Seismic data are scrutinized to determine whether or not features observed in the data represent true subsurface geometries. Other hypotheses are tested including the possibility that these features may represent seismic data acquisition footprints, a portion of a slump deposit, or a portion of an aeolian dune field. Results indicate that it is very unlikely that these features represent an acquisition footprint, a slump deposit, or an aeolian dune field. Well-logs are interpreted and seismic velocities are calculated to determine a range of possible lithologies within the Upper Cretaceous interval but the results of the two methods are inconsistent with each other.

Indexing (document details)
Advisor: Kinslad, Gary L.
Commitee: Duex, Timothy W., Lock, Brian E., Richter, Carl
School: University of Louisiana at Lafayette
Department: Geology
School Location: United States -- Louisiana
Source: MAI 52/06M(E), Masters Abstracts International
Subjects: Geology, Geophysics, Geomorphology
Keywords: 3D seismic, Chicxulub, Louisiana, Mega-ripples, Subaqueous dunes, Tsunami
Publication Number: 1553871
ISBN: 978-1-303-82067-0
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