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TitleHydrogeochemistry and groundwater origin of the Basses-Laurentides sedimentary rock aquifer system, St. Lawrence Lowlands, Québec, Canada
AuthorCloutier, V; Lefebvre, R; Savard, M M; Bourque, E; Therrien, R
SourceHydrogeology Journal vol. 14, no. 4, 2006 p. 573-590,
Alt SeriesGeological Survey of Canada, Contribution Series 2003192
PublisherSpringer Nature
Mediapaper; on-line; digital
File formathtml; pdf (Adobe Acrobat Reader)
NTS31G/09; 31G/15; 31G/16; 31H/13; 31I/04; 31J/01; 31J/02
AreaSt. Lawrence Lowlands; Montreal
Lat/Long WENS -75.0000 -73.5000 46.2500 45.5000
Subjectshydrogeology; geochemistry; groundwater; groundwater geochemistry; groundwater resources; groundwater regimes; aquifers; sedimentary rocks; Paleozoic
Illustrationslocation maps; tables; plots; histograms
ProgramCanada Economic Development, Funding Program
ProgramMunicipalité régionale de comté d'Argenteuil, Programme de financement
ProgramMunicipalité régionale de comté de Deux-Montagnes, Programme de financement
ProgramMunicipalité régionale de comté de Mirabel, Programme de financement
ProgramMunicipalité régionale de comté deThérèse-de-Blainville, Programme de financement
ProgramMinistère du développement durable, Environnement et Parcs du Québec, Programme de financement
ProgramConseil Régional de Développement-Laurentides, Programme de financement
ProgramAssociation des Professionnels de Développement Économique des Laurentides, Programme de financement
ProgramNSERC Natural Sciences and Engineering Research Council of Canada
ProgramFonds québecois de la recherche sur la nature et les technologies
ProgramINRS Institut national de la recherche scientifique, Centre Eau, Terre & Environnement, Programme de financement
Released2006 02 07
AbstractA comprehensive hydrogeochemical study was carried out in the Paleozoic Basses-Laurentides sedimentary rock aquifer system in Québec over a 1500 km2 study area. Groundwater samples were collected at 153 sites, characterizing all geological and hydrogeological units to a maximum depth of 140 m. Groundwater was analyzed for major, minor and trace inorganic constituents, stable isotopes delta2H, delta18O, and delta13C of dissolved inorganic carbon (DIC), and some samples were analyzed for 3H, and 14C of DIC. The regional distribution of groundwater types shows that the hydrogeological conditions exert a dominant control on the major ions chemistry of groundwater. Preferential recharge areas are characterized by tritiated Ca-Mg-HCO3 groundwater, and confined conditions by submodern Na-HCO3 and Na-Cl groundwater types. Two groundwater end-members are identified in the aquifer system, modern meteoric water and Pleistocene Champlain Sea water. The region displays significant variations of groundwater geochemistry and quality controlled by glaciation, Champlain Sea invasion, lithological rock diversity, and flow system scales. This situation leads to varied groundwater types and origins within a restricted area.