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TitleReconnaissance sub-bottom profiling survey at Larder Lake, Ontario
DownloadDownloads
AuthorBrooks, G R
SourceGeological Survey of Canada, Open File 7986, 2016, 21 pages, https://doi.org/10.4095/297466
Year2016
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
RelatedFor all publications in this survey, see the following publications
File formatreadme
File formatpdf; bmp; rtf
ProvinceOntario
NTS32D/04
AreaLarder Lake
Lat/Long WENS -80.0000 -79.5000 48.2500 48.0000
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
ProgramWestern Canada Geohazards Project, Public Safety Geoscience
Released2016 01 12
AbstractAs part of a reconnaissance sub-bottom acoustic profiling (SAP) survey, 29 SAP were collected from the southern area of the east basin of Larder Lake, Ontario, on July 20, 2014. An additional 25 SAP were collected from Leroy, Northwest and Fitzpatrick bays of the west basin on July 23, 2014. Good penetration of the sub-bottom was obtained within the profiled areas. Three facies can be identified within the SAP returns that represent lacustrine, glaciolacustrine and mass movement deposits. The profiles collected from Larder Lake demonstrate the presence of mass movement deposits within this basin. However, deep water conditions in many of the profiled areas represent a challenge to coring, depending on the coring equipment used.
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.
GEOSCAN ID297466