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TitleMapping buried valley aquifers in SW Manitoba using a vibrating source/landstreamer seismic reflection system
AuthorPugin, A J -M; Pullan, S E; Hinton, M J; Cartwright, T; Douma, M; Burns, R A
SourceProceedings of SAGEEP'09 (Symposium on the Application of Geophysics to Environmental and Engineering Problems); 2009 p. 586-595
Alt SeriesEarth Sciences Sector, Contribution Series 20080672
MeetingSAGEEP'09 (Symposium on the Application of Geophysics to Environmental and Engineering Problems); Fort Worth, TX; US; March 29-April 2, 2009
NTS62F; 62G; 62J; 62K; 62N; 63C
Areasouthwest Manitoba; Kilarney; Medora; Waskada; Cartwright; Pierson; Brandon; Swan River; Porcupine Hills; Riding Mountain
Lat/Long WENS-101.5000 -98.0000 53.0000 49.0000
Subjectshydrogeology; geophysics; Pleistocene; aquifers; groundwater; groundwater resources; groundwater surveys; groundwater regimes; seismic interpretations; seismic surveys; seismic reflection surveys; geophysical surveys; buried valleys; Cenozoic; Quaternary; Tertiary
Illustrationslocation maps; photographs; tables; profiles
ProgramGroundwater Mapping Program
AbstractIn southwest Manitoba, Canada, sand and gravel aquifers within buried valleys of Pleistocene and/or Tertiary age eroded into underlying Cretaceous bedrock have been developed for municipal, pipeline and farm water supplies. These valleys have little or no surface expression and the sedimentary architecture is poorly known; the extent of the valleys and their aquifers has been only partially delineated by boreholes. A program of seismic reflection surveys conducted primarily in compressional (P-) mode has investigated three different buried valley systems and imaged their thick Pleistocene glacial sequences. The efficiency and effectiveness of the vibratory source/landstreamer system was demonstrated during a production P-wave survey in which 38 line-km of seismic reflection profiles were collected in 9 days. The seismic data provide an assessment of the subsurface architecture, and the thickness and properties of both the valley fill and the overlying sediments to depths of ~100m. The profiles can also be used to locate optimum sites for groundwater well placements within buried valleys. This survey demonstrates that the seismic reflection method can now be considered a viable reconnaissance or regional mapping tool.