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TitleReconnaissance sub-bottom profiling survey at Lac Caste, Quebec
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBrooks, G RORCID logo
SourceGeological Survey of Canada, Open File 7991, 2016, 13 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Mediaon-line; digital
RelatedFor all publications in this group, see the following publications
File formatreadme
File formatpdf; bmp; rtf
AreaLac Caste
Lat/Long WENS -79.0000 -78.5000 48.5000 48.2500
Subjectssedimentology; surficial geology/geomorphology; lakes; lake sediments; lake sediment geochemistry; lake sediment thickness; lacustrine deposits; lacustrine environments; glaciolacustrine deposits; sediment transport
Illustrationslocation maps; profiles; tables
ProgramPublic Safety Geoscience Western Canada Geohazards Project
Released2016 01 12
AbstractAs part of a reconnaissance sub-bottom acoustic profiling (SAP) survey, eleven SAP were collected from Lac Caste, Quebec, on July 10, 2014. The returns with the best penetration of the sub-bottom were collected in the small bay in the southern area of the lake and along the immediate south and west sides of the main basin. There was no penetration of the sub-bottom over most of the central and eastern areas of the main basin. Three facies are present within the SAP returns that represent lacustrine, glaciolacustrine and mass movement deposits. The profiles collected from Lac Caste demonstrate the presence of mass movement deposits within this basin.
Summary(Plain Language Summary, not published)
This report is one of eight that are being released concurrently. All contain the results of geophysical surveys of the bed of a selected lakes in the area of Rouyn-Noranada-Kirkland Lake, Quebec-Ontario. The results from some of the lakes show evidence of ancient landslides that occurred in a large glacial lake. These results will be used in a study that is investigating whether the landslides were triggered by an ancient earthquake.

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