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

  • Author / Creator
    Xie, Wei
  • 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.

  • Subjects / Keywords
  • Graduation date
    2014-11
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3CN6Z598
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Department of Physics
  • Specialization
    • Geophysics
  • Supervisor / co-supervisor and their department(s)
    • Schmitt, Douglas (Physics)
  • Examining committee members and their departments
    • Sivakoff, Gregory (Physics)
    • Gu, Jeffrey (Physics)
    • Herd, Christopher (Earth & Atmospheric Sciences)