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TitleRésultats initiaux d'une partie des travaux de caractérisation hydrogéologique des aquifères fracturés du sud-ouest du Québec
AuthorFagnan, N; Nastev, M; Lefebvre, R; Martel, R; Savard, M M
SourceGeological Survey of Canada, Current Research (Online) no. 2001-D7, 2001, 19 pages, (Open Access)
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
NTS31G/06; 31G/07; 31G/08; 31G/09; 31G/10; 31G/11; 31G/14; 31G/15; 31G/16; 31H/05; 31H/12; 31H/13
AreaArgenteuil; Mirabel; Deux-Montagnes; Th6rèse-de-Blainville; Montréal; Oka; Saint-Hermas; Lachute
Lat/Long WENS-75.5000 -73.5000 46.0000 45.2500
Subjectshydrogeology; piezometric levels; groundwater levels; groundwater regimes; groundwater movement; groundwater discharge; aquifers; topography; tills; sands; clays; Beauharnois Formation; Thérèse Formation; Cairnside Formation; Covey Hill Formation; piezometric analyses; Quaternary; Paleozoic; Cretaceous
Illustrationssketch maps; cross-sections; hydrograms; stratigraphic correlations
Released2001 01 01
AbstractThis report presents part of the preliminary results of the 1999--2000 fieldwork undertaken within the framework of a hydrogeological fractured-rock mapping project led by the Geological Survey of Canada. The study area consists of a sequence of Paleozoic sedimentary rocks overlain by Quaternary sediments. The sediments form thick accu- mulations in the vicinity of the Oka Hills and along the terrace in the Saint-Hermas and Lachute sectors. A piezometric survey carried out to produce a regional groundwater elevation map revealed that the piezometric sur- face closely follows the surface topography. A regional hydrogeological map was developed. Confined conditions are found within areas of thick Quaternary deposits. Unconfined conditions are found in areas of thin deposits; these areas constitute the main recharge zones of fractured-rock aquifers.