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TitleA guide to landslides in sensitive clay along the north side of the Ottawa River, west of Ottawa-Gatineau, southwestern Quebec
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBrooks, G RORCID logo; Crow, H LORCID logo
SourceGeological Survey of Canada, Open File 8724, 2020, 41 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
ProvinceOntario; Quebec
NTS13F/07; 31F/08; 31F/09; 31F/10; 31G/05; 31G/12
AreaOttawa; Gatineau; Ottawa River; Rideau River; Mississippi River; Madawaska River; Rivière Gatineau; Rivière Lièvre; Rivière Quyon
Lat/Long WENS -76.7500 -75.5000 45.7500 45.2500
Subjectssurficial geology/geomorphology; geophysics; engineering geology; mineralogy; geochronology; Nature and Environment; Science and Technology; marine clays; sensitive clays; clays; silts; landslides; debris flows; landslide deposits; debris flow deposits; surface waters; rivers; paleodrainage; landforms; scarps; earthquakes; earthquake risk; seismic risk; seismicity; earthquake magnitudes; geological history; glacial history; submergence; grain size analysis; mineralogical analyses; shear strength; hydraulic conductivity; magnetic susceptibility; radiometric dates; radiocarbon dates; Champlain Sea Sediments; Champlain Sea; Leda Clay; Western Québec Seismic Zone; Alary Road Landslide; Luskville Landslide; Quyon Valley Landslide; Murphy Road Landslide; Heath Road Landslide; glaciomarine sediments; landslide scars; submergence, marine; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; geoscientific sketch maps; tables; profiles; geophysical logs; lithologic sections; photographs; bar graphs; tables
ProgramPublic Safety Geoscience Intraplate Earthquakes
Released2020 06 04
Summary(Plain Language Summary, not published)
This guidebook highlights sensitive clay landslides at five locations situated just north of the Ottawa River within the municipalities of Pontiac, Bristol and Clarendon, Quebec, to the west of Ottawa-Gatineau. The landslides form major geomorphic features in the landscape that are easily overlooked, but are readily apparent on shaded relief maps. The sites include the Quyon Valley landslide, one of the largest sensitive clay landslides in eastern Canada. All five locations are easily accessed and viewed along roads without intruding onto private property.

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