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TitleDeglacial history of the Champlain Sea basin and implications for urbanization
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorRussell, H A JORCID logo (ed.); Brooks, G RORCID logo (ed.); Cummings, D I (ed.)
SourceGeological Survey of Canada, Open File 6947, 2011, 96 pages, Open Access logo Open Access
PublisherNatural Resources Canada
MeetingJoint Annual Meeting of the Geological Association of Canada, the Mineralogical Association of Canada, the Society of Economic Geologists and the Society for Geology Applied to Mineral Deposits; Ottawa; CA; May 25-27, 2011
Documentopen file
Mediaon-line; digital
RelatedThis publication contains the following publications
File formatpdf
ProvinceOntario; Quebec
NTS31G/03; 31G/05; 31G/06; 31G/13
AreaOttawa; Vars; Winchester; Breckenridge; Notre-Dame-de-la-Salette; Gatineau
Lat/Long WENS-76.0000 -75.0000 46.0000 45.0000
Subjectssurficial geology/geomorphology; environmental geology; engineering geology; hydrogeology; geophysics; stratigraphy; glacial deposits; glacial history; deglaciation; urban geology; urban planning; basins; earthquakes; earthquake risk; earthquake catalogues; glacial landforms; eskers; drumlins; fans; groundwater; slope stability; slope failures; meltwater channels; clays; sensitive clays; tills; gravels; sands; diamictites; seismicity; seismic waves; wave propagation; depositional environment; stratification; Champlain Sea; Champlain Sea Basin; Western Quebec Seismic Zone; Cenozoic; Quaternary
Illustrationslocation maps; tables; stratigraphic columns; photographs; cross-sections; models; profiles; plots
ProgramGroundwater Geoscience Aquifer Assessment & support to mapping
Released2011 12 02
AbstractThe Champlain Sea was an inland arm of the Atlantic Ocean that inundated the St. Lawrence Lowland following retreat of the Laurentide Ice Sheet. The fine-grained sediments deposited in this sea have important implications for urbanization (e.g. slope stability, foundation design, seismic hazard assessment) of the National Capital Region. This two-day field trip reviews aspects of the deglacial landforms and deposits of the area, the Champlain Sea deposits, and reviews the societal implications from the perspectives of hydrogeology and natural hazards. On day one, a visit to the Vars-Winchester esker and environs provides the setting for discussing eskers and Champlain Sea deposits and the importance of these features with respect to regional hydrogeological issues. On day two, the focus shifts to natural hazards, with visits to a cluster of earth-flow scars at Breckenridge, Quebec, and an earth flow near Notre-Dame-de-la-Salette, Quebec, that was triggered by an earthquake on June 23, 2010. Discussion will focus on the seismicity of the earthquake and issues of seismic amplification due to variations in local geology.

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