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Permanent link (DOI): https://doi.org/10.7939/R3PS34

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An investigation of the Whitecourt meteorite impact crater (Alberta, Canada) Open Access

Descriptions

Other title
Subject/Keyword
meteorite
impact
crater
whitecourt
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Kofman, Randolf
Supervisor and department
Christopher Herd (Earth and Atmospheric Sciences)
Examining committee member and department
Doug Schmitt (Physics)
Duane Froese (Earth and Atmospheric Sciences)
Department
Department of Earth and Atmospheric Sciences
Specialization

Date accepted
2010-03-11T15:31:09Z
Graduation date
2010-06
Degree
Master of Science
Degree level
Master's
Abstract
The <1,130 year old Whitecourt Meteorite Impact Crater, located several kilometres south of Whitecourt, Alberta (Canada), is a well-preserved bowl-shaped structure having a depth and diameter of ~6 m and 36 m. There are less than a dozen known terrestrial sites of similar size and age. Unlike most of these sites, the Whitecourt Crater contains nearly all the features associated with small impact craters including meteorites, an ejecta blanket, an observable transient crater boundary, a raised rim, and a number of associated shock indicators. The results of this study indicate that the crater formed from the impact of a type IIIAB iron meteorite travelling east-northeast at <10 km/s, striking the surface at an angle between 40° and 55° to horizontal. At present, it appears that the main mass survived atmospheric transit relatively intact to fragment and partially melt during impact, ejecting meteoritic shrapnel, most of which landed downrange.
Language
English
DOI
doi:10.7939/R3PS34
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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