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TitleComparison of single- and multichannel high-resolution seismic data for shallow stratigraphy mapping in St. Lawrence River estuary, Quebec
AuthorBellefleur, G; Duchesne, M J; Hunter, J; Long, B F; Lavoie, D
SourceGeological Survey of Canada, Current Research (Online) 2006-D2, 2006, 10 pages; 1 CD-ROM,
PublisherNatural Resources Canada
Mediaon-line; CD-ROM; digital
File formatpdf (Adobe Acrobat Reader)
ProvinceEastern offshore region; Quebec
NTS22B/13; 22B/14; 22C/03; 22C/06; 22C/07; 22C/09; 22C/10; 22C/11; 22C/15; 22C/16; 22F/01; 22F/02; 22F/08; 22G/03; 22G/04; 22G/05; 22G/06
AreaSt. Lawrence River Estuary; Laurentian Channel; Forestville; Matane
Lat/Long WENS-69.5000 -67.1667 49.3333 48.0000
Subjectssurficial geology/geomorphology; marine geology; geophysics; mapping techniques; geophysical surveys; seismic data; seismic surveys, marine; seismic reflection surveys; seismic profiles, marine; till stratigraphy; stratigraphic analyses; sedimentary structures; structural analysis; bedrock geology; lithology; hydrocarbons; gas; free gas; sediments; data acquisition; imaging; data processing; sparker signature; Phanerozoic; Cenozoic; Quaternary
Illustrationssketch maps; schematic diagrams; seismic reflection profiles; spectra; tables; graphs; profiles
ProgramTargeted Geoscience Initiative (TGI-2), 2003-2005
ProgramINRS Institut national de la recherche scientifique, Centre Eau, Terre & Environnement, Programme de financement
ProgramHydro-Québec, Programme de financement
ProgramSecure Canadian Energy Supply
Released2006 12 01
AbstractDuring the summer of 2004, over 1150 km of high-resolution marine seismic-reflection data were acquired along 28 profiles in the St. Lawrence River estuary. The main objectives of the survey were to study the stratigraphy of unconsolidated Quaternary sediments, to locate areas with natural gas, and to provide information on shallow structures and rock types of the basement. The seismic data were acquired with a single-channel and a multichannel streamer to assess improvements and differences between seismic images resulting from the two acquisition geometries. In general, the single- and multichannel data display very similar regional geological information. The multichannel data locally provides additional details for some geological structures within the unconsolidated sediments and underlying bedrock.