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Dissertation/Thesis Abstract

Regional Subsurface Investigation of the Uppermost Cretaceous and the James Limestone in the Eastern Region of Texas
by Broussard, Kevin Tyler, M.S., University of Louisiana at Lafayette, 2018, 86; 13420882
Abstract (Summary)

The Sabine Uplift has been called a "mobile block" that has experienced periods of uplift and subsidence. The formation of this area has been attributed to one main driving factor, compressional forces due to tectonics (Granata, 1963; Halbouty and Halbouty, 1982; Jackson and Laubach, 1988a, 1988b, 1991; Ewing, 2009; Sawyer et al., 1991; Adams, 2009; Nunn, 1990). With authors attributing the major episodes of uplift of this area to the Laramide Orogeny, approximately 70 to 80 million years ago (Ma), it marks the time of the end of the Cretaceous (approximately 65 Ma) as a major key to understanding the area. One hundred and seventy-six well logs located in East Texas were used to analyze the area known as the Sabine Uplift in order to pinpoint times of uplift. The major horizons studied are the top of the Midway Shale, the Cretaceous/Paleogene boundary, and the James Limestone. Structure contour maps were created from this data set to determine the present day topography of the formations. These contour maps were then used to create isochore maps to determine whether the Sabine was a positive or negative feature at the time, or if it showed no topography at all. Furthermore, the well log data were used to identify different facies throughout the area to help determine topography.

Indexing (document details)
Advisor: Kinsland, Gary
Commitee: Gottardi, Raphael, Hargrave, Jennifer
School: University of Louisiana at Lafayette
Department: Geology
School Location: United States -- Louisiana
Source: MAI 58/05M(E), Masters Abstracts International
Subjects: Geology
Publication Number: 13420882
ISBN: 978-1-392-04230-4
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