Abstract
In thrust‐fold belt tectonic settings (e.g., the Canadian Foothills), conventional acquisition and processing of seismic data is often inadequate in producing an accurate velocity model and corresponding sub‐surface image. High‐velocity, weathered carbonate outcrops at surface degrade the quality of the recorded data, but these effects can be mitigated by suitable seismic survey design (e.g., acquiring long offsets) and data preconditioning. Comparison of data acquired with both MEMS accelerometers and conventional geophones suggests that significantly better low‐frequency data appear available only from geophones. A superior method of velocity model estimation, Waveform Tomography, can then be used to improve the sub‐surface image. We apply this approach to 2‐D, long‐offset data acquired in the Canadian Foothills.
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