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TitleGéologie des formations en surface et histoire glaciaire, Bas-Saint-Laurent, Québec
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorVeillette, J JORCID logo; Cloutier, M; Paradis, S J; Hétu, B; Cloutier, C -A; Houde-Poirier, M; Buffin-Bélanger, T
SourceGeological Survey of Canada, Canadian Geoscience Map 279, 2017, 1 sheet, Open Access logo Open Access
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, lithology, landforms, 1:250,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 19 (NAD83)
Mediaon-line; digital
File formatlisez-moi
File formatpdf; rtf; xls; gdb; tif; shp; xml; mxd (ArcGIS 10)
NTS21N; 21O/13; 21O/14; 21O/15; 22B/02; 22B/03; 22B/04; 22B/05; 22B/06; 22B/07; 22B/12; 22C/01; 22C/02; 22C/03; 22C/07; 22C/08; 22C/09
AreaFleuve St-Laurent; St. Lawrence River
Lat/Long WENS -70.0000 -66.9167 48.6333 47.0833
Subjectssurficial geology/geomorphology; organic deposits; alluvial deposits; colluvial deposits; marine deposits; beach deposits; intertidal deposits; littoral deposits; deltaic deposits; glacial deposits; glacial landforms; glacial landforms; glaciomarine deposits; glaciolacustrine deposits; glaciofluvial deposits; outwash plains; ice contact deposits; tills; kettles; landslides; scarps; paleogeography; raised beaches; shoreline changes; meltwater channels; moraines; eskers; crag and tail; glacial scours; drumlinoids; glacial striations; cirques; escarpments; lineaments; alluvial fans; deltas; erratics; ice movement directions; terraces; kames; sands; gravels; silts; clays; regoliths; geological history; glacial history; glacial stages; deglaciation; submergence; mining; pits; quarries; bedrock geology; lithology; Goldthwait Sea; St. Lawrence Estuary; Phanerozoic; Cenozoic; Quaternary; Paleozoic; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationslocation maps; index maps; sketch maps
ProgramGroundwater Geoscience, Aquifer Assessment & support to mapping
Released2017 02 14
AbstractA surficial geology map at 1:250 000 scale compiled from several maps and regional studies is the centerpiece of this study. The geomorphology of the region characterised by a ridge and trough topography parallel to the St. Lawrence River and inherited from the Appalachian substrate, is crosscut roughly at right angle by several ice flows. The distribution of striations and Precambrian and Appalachian erratics suggests an initial Laurentide ice flow toward the east-southeast shifting toward the southeast. This sequence was followed by flows toward the northeast, north and northwest from Appalachian ice divides resulting from an opening in the ice sheet caused by a calving bay progressing up the St. Lawrence Valley which allowed the Goldthwait Sea to submerge a narrow coastal fringe between 15 000 to 14 500 years BP. The elevation of glacio-marine deltas places the marine limit at about 160 m. A recent subsurface investigation project in the coastal area provides new information on the regional Quaternary stratigraphy.
Summary(Plain Language Summary, not published)
Compilation of several surficial geology maps of the Lower St. Lawrence region. It contains geomorphology, glacial ice flow and history of glacial transport of sediment. There are lots of radiocarbon dates compiled on this map as well, outlining a post-glacial history and marine inundation. This map is a very important legacy publication, compiled by an emeritus scientist from data collected during the MDA (Mineral Development Agreement) Programs (1983-1989). Now, this map becomes a complement to the aquifer mapping and characterization effort that done in collaboration with the provincial PACES program at MDDELCC in Québec.

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