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TitleGéomorphologie et géologie du quaternaire du Témiscamingue, Québec et Ontario
AuthorVeillette, J J
SourceGeological Survey of Canada, Bulletin 476, 1996, 269 pages, (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
MapsPublication contains 7 maps
Map Info.surficial geology, glacial straie measurements, 1:500,000
Map Info.surficial geology, landforms, lithology, 1:100,000
Mediapaper; on-line; digital
RelatedThis publication contains the following publications
File formatpdf
ProvinceQuebec; Ontario
NTS31L/10; 31L/11; 31L/14; 31L/15; 31M; 31N/11; 31N/12; 31N/13; 31N/14
AreaTémiscaming; Lac Simard; Lac Témiscamingue
Lat/Long WENS -80.0000 -77.0000 48.0000 46.5000
Subjectssurficial geology/geomorphology; geochemistry; geochronology; glacial history; deglaciation; glacial lakes; moraines; glacial striations; ice movement; ice movement directions; ice sheets; tills; glaciofluvial deposits; eskers; glacial deposits; depositional environment; stratigraphic analyses; lithology; till geochemistry; radiocarbon dates; radiometric dates; palynostratigraphy; paleogeography; pollen assemblages; spore assemblages; analyses; trace element analyses; geochemical analyses; bedrock geology; McConnell Glacial Stage; McConnell moraine; Harricana moraine; Laurentide Ice-sheet; Quaternary
Illustrationssketch maps; photographs; cross-sections; aerial photographs; analyses
Released1996 07 01; 2013 04 02
AbstractDeglaciation of the Timiskaming region began about 10.5 ka with the formation of a re-entrant in the glacier east of North Bay, Ontario, south of the region. The northeasterly migration of this initial opening in the ice led to the formation of two major lobes, one retreating northwest and the other, northeast, on either side of the fluvioglacial complex formed by the Lake McConnell moraine to the south and the Harricana moraine to the north, about 9.5 ka.
Indicators of ancient ice flow to the west-southwest and the southeast, intersected by indicators of flow to the southeast, have been found on bedrock at 245 sites in the western part of the region; they reveal a striking consistency in the chronological order and orientation of the families of striations. The absence of any indication of subaerial weathering on the oldest striated surfaces suggests that these intersections are the result of changes in the direction of flow of a single glacial mass, with no nonglacial interval. The relative duration of these flows has been estimated on the basis of the length and direction of trains of glacially transported material from Paleozoic source rocks at Lake Timiskaming.
The proposed interpretation of glacier dynamics has been compared to that deduced from the principal glaciological and geological reconstructions of the eastern sector of the Laurentide Ice Sheet at its maximum extent. These data represent the first field evidence from the centre of this sector to indicate that the western part of the region, while strongly marked by the most recent flow to the southeast, bears traces of major flows to the southwest, which we attribute in part to the Late Wisconsin.