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Permanent link (DOI): https://doi.org/10.7939/R3HM52R9N

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Detailed examination of iron meteorites and impact generated carbonaceous spherules associated with the Whitecourt Meteorite Impact Crater, Alberta, Canada Open Access

Descriptions

Other title
Subject/Keyword
meteorite
carbonaceous spherule
impact crater
Whitecourt
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Newman, Jennifer D
Supervisor and department
Herd, Christopher (Earth and Atmospheric Sciences)
Examining committee member and department
Creaser, Robert (Earth and Atmospheric Sciences)
Schmitt, Douglas (Physics)
Department
Department of Earth and Atmospheric Sciences
Specialization

Date accepted
2014-01-31T13:13:02Z
Graduation date
2014-06
Degree
Master of Science
Degree level
Master's
Abstract
The impact of an iron meteorite <1100 years ago near Whitecourt, Alberta, Canada formed a crater 36 m in diameter. The impacting body fragmented upon impact, scattering thousands of shrapnel-shaped fragments around the crater. Internal examination of the fragments reveal that the mineralogy is consistent with a type IIIAB iron meteorite and most of the deformations in texture observed is a result of the impact. The high preservation of the impact site has protected the meteorite fragments from severe weathering as well as preserving small amorphous carbonaceous spherules distributed in the soil surrounding the crater. The carbonaceous spherules were generated during the impact when biomass was heated rapidly enough to form molten spherules which were then dispersed by the expanding impact plume. The examination of preserved meteorites and spherules provide insights into low-energy meteorite impacts, which are rare in the current terrestrial impact record.
Language
English
DOI
doi:10.7939/R3HM52R9N
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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File author: Jennifer Newman
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File language: en-CA
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