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Seismic Characterization of A Possible Buried Impact Structure near Bow City in Southern Alberta Open Access


Other title
Impact Crater
Seismic study
Bow City
Type of item
Degree grantor
University of Alberta
Author or creator
Xie, Wei
Supervisor and department
Schmitt, Douglas (Physics)
Examining committee member and department
Herd, Christopher (Earth & Atmospheric Sciences)
Gu, Jeffrey (Physics)
Sivakoff, Gregory (Physics)
Department of Physics
Date accepted
Graduation date
Master of Science
Degree level
Impact cratering has been accepted as a major process that significantly affects the geological and biological histories on earth. In fact, there have been a number of impact craters detected in western Canada since the 1970’s. Following this tradition, a possible buried impact structure near Bow City in Southern Alberta was discovered in 2010 by careful near-surface structural mapping. The motivation of this study is to examine the impact origin of this abnormal structure, which could provide valuable information for the impact research and the geological development of the Western Canada Sedimentary Basin. The work is carried out with integrated legacy and new seismic reflection images, seismic travel time inversion, and structural modeling. This evidence shows distinct listric faulting at the structure’s edge and a more central uplift zone that is highly faulted; this structural evidence is similar to that seen in other craters and supports interpretation of the structure as an impact crater. Final definitive confirmation, however, still requires that evidence of shock metamorphism be found.
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.
Citation for previous publication
Glombick, P., D. R. Schmitt, W. Xie, T. Bown, B. Hathway, and C. Banks (2014), The Bow City structure, southern Alberta, Canada: The deep roots of a complex impact structure?, Meteoritics & Planetary Science.

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