Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma

A nearly circular subsurface structure 2 km in diameter has been identified in north-central Oklahoma near the town of Ingalls in Payne County. The structure lies beneath ~1100 m of sedimentary rock, and stratigraphic information from well logs suggests that the structure developed from the Ordovici...

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Main Author:	Herrmann, Benjamin Charles
Other Authors:	Rhiannon G Mayne
Format:	Others
Language:	en
Published:	Texas Christian University 2011
Subjects:	College of Science and Engineering
Online Access:	http://etd.tcu.edu/etdfiles/available/etd-05032011-155528/

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spelling	ndltd-TCU-oai-etd.tcu.edu-etd-05032011-1555282013-01-08T02:48:37Z Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma Herrmann, Benjamin Charles College of Science and Engineering A nearly circular subsurface structure 2 km in diameter has been identified in north-central Oklahoma near the town of Ingalls in Payne County. The structure lies beneath ~1100 m of sedimentary rock, and stratigraphic information from well logs suggests that the structure developed from the Ordovician through the Devonian. Sedimentary units within the structure have widely varying thicknesses and abnormal characteristics. Rocks in the center of the structure have been uplifted nearly 100 m. The best explanation for these stratigraphic relationships is a meteorite impact, and the purpose of this study is to seek evidence supporting an impact origin for the Ingalls structure. Cuttings from wells drilled into the structure were investigated for evidence of shock metamorphism, the rock deformation caused by intense pressures generated only by meteorite impacts. Results indicate that the hypothesis of an impact at Ingalls is likely, but definitive evidence has not yet been found. Rhiannon G Mayne Texas Christian University 2011-05-03 text application/pdf application/octet-stream http://etd.tcu.edu/etdfiles/available/etd-05032011-155528/ http://etd.tcu.edu/etdfiles/available/etd-05032011-155528/ en unrestricted I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to TCU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.
collection	NDLTD
language	en
format	Others
sources	NDLTD
topic	College of Science and Engineering
spellingShingle	College of Science and Engineering Herrmann, Benjamin Charles Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
description	A nearly circular subsurface structure 2 km in diameter has been identified in north-central Oklahoma near the town of Ingalls in Payne County. The structure lies beneath ~1100 m of sedimentary rock, and stratigraphic information from well logs suggests that the structure developed from the Ordovician through the Devonian. Sedimentary units within the structure have widely varying thicknesses and abnormal characteristics. Rocks in the center of the structure have been uplifted nearly 100 m. The best explanation for these stratigraphic relationships is a meteorite impact, and the purpose of this study is to seek evidence supporting an impact origin for the Ingalls structure. Cuttings from wells drilled into the structure were investigated for evidence of shock metamorphism, the rock deformation caused by intense pressures generated only by meteorite impacts. Results indicate that the hypothesis of an impact at Ingalls is likely, but definitive evidence has not yet been found.
author2	Rhiannon G Mayne
author_facet	Rhiannon G Mayne Herrmann, Benjamin Charles
author	Herrmann, Benjamin Charles
author_sort	Herrmann, Benjamin Charles
title	Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
title_short	Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
title_full	Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
title_fullStr	Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
title_full_unstemmed	Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma
title_sort	impact at ingalls? evidence for a subsurface ordovician meteorite impact near ingalls, oklahoma
publisher	Texas Christian University
publishDate	2011
url	http://etd.tcu.edu/etdfiles/available/etd-05032011-155528/
work_keys_str_mv	AT herrmannbenjamincharles impactatingallsevidenceforasubsurfaceordovicianmeteoriteimpactnearingallsoklahoma
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Impact at Ingalls? Evidence for a subsurface Ordovician meteorite impact near Ingalls, Oklahoma

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