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TitleSeismic reflection profiling in support of a deep borehole, Fraser River delta, British Columbia
DownloadFree download (whole publication) (pdf 33984 KB)
AuthorHarris, J B; Hillman, R A; Hunter, J A; Luternauer, J L
SourceCurrent Research 1997-E/Recherches en cours 1997-E; by Geological Survey of Canada; Geological Survey of Canada, Current Research 1997-E, 1997 p. 13-18,
PublisherNatural Resources Canada
RelatedThis publication is contained in Geological Survey of Canada; Geological Survey of Canada; (1997). Current Research 1997-E, Geological Survey of Canada, Current Research no. 1997-E
ProvinceBritish Columbia
Lat/Long WENS-123.0683 -123.0417 49.1867 49.1683
Subjectsstructural geology; geophysics; seismic reflection surveys; seismic surveys, ground; seismic interpretations; seismic profiles; seismic surveys; geophysical surveys; boreholes; structural controls; structural features; bedrock topography; Tertiary
Illustrationssketch maps; seismic profiles
Released1997 07 01
AbstractApproximately 3 km of seismic reflection data have been obtained in order to map the structure of the bedrock (Tertiary) surface in an area surrounding a deep borehole drilled as part of a continuing earthquake hazards assessment of the Fraser River delta. Seismic data quality was highly variable (even over relatively short distances) due primarily to the presence of gas in the shallow sediments. A map of two-way travel time suggests a northeast-trending bedrock channel beneath the area that is possibly fault controlled. The structure of the bedrock surface beneath the delta has been identified as an important boundary for controlling ground motion amplification from seismic shaking. It is anticipated that this new information will be combined with the existing bedrock data set to further assemble a geological and geophysical framework of the deep structure beneath the delta.