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dc.contributor.supervisor Frederiksen, Andrew (Geological Sciences) en_US
dc.contributor.author Zaporozan, Taras
dc.date.accessioned 2017-01-05T18:03:10Z
dc.date.available 2017-01-05T18:03:10Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/1993/31983
dc.description.abstract Seismic data from 106 station pair-paths, from the CNSN (Canadian National Seismic Network) and POLARIS (Portable Observatories for Lithospheric Analysis and Research Investigating Seismicity) seismic networks, were used to measure surface waves from earthquake events. Fundamental-mode Rayleigh-wave dispersion curves were generated and inverted to obtain dispersion maps and S-velocity cross-sections. Results show a clear distinction between the Cordilleran and cratonic lithospheres. The Cordilleran lithopshere shows a low-velocity perturbation with values ranging from -2% to -5%, while the cratonic lithosphere shows a high-velocity perturbation with values ranging from 3% to 9%. The large range in perturbation between the Cordilleran and cratonic lithospheres resolves the Cordilleran/craton boundary, showing that the boundary is present down to 200 km in depth and dips under the cratonic lithosphere. A high-velocity anomaly within the already high velocity cratonic lithosphere is present under Great Slave Lake and is interpreted as preserved Precambrian slab material. Many small high-velocity perturbations, reaching about 4%, are present at depths of 300+ km throughout the survey, and interpreted as being remnants of the Kula or Farallon plates. en_US
dc.subject Tomography en_US
dc.subject Cordillera en_US
dc.subject Geophysics en_US
dc.subject Cordilleran Deformation Front en_US
dc.subject Two-station en_US
dc.subject Seismology en_US
dc.subject Craton en_US
dc.title Surface-Wave Tomography of Western Canada Using a Two-station Approach en_US
dc.degree.discipline Geological Sciences en_US
dc.contributor.examiningcommittee Ferguson, Ian (Geological Sciences) Audet, Pascal (University of Ottawa) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2017 en_US


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