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TitleReconnaissance surficial geology, Jervoise River, Nunavut, NTS 66-E, north half
AuthorSt-Onge, D A; Kerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 131, 2013, 1 sheet, (Open Access)
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, glacial deposits and landforms, 1:125,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 13 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; shp; xml; xls; jpg; JPEG2000
NTS66E/09; 66E/10; 66E/11; 66E/12; 66E/13; 66E/14; 66E/15; 66E/16
AreaJervoise River; Back River
Lat/Long WENS-104.0000 -102.0000 66.0000 65.5000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; glaciolacustrine deposits; glaciofluvial deposits; organic deposits; alluvial deposits; colluvial deposits; eolian deposits; lacustrine deposits; moraines; Cenozoic; Quaternary
ProgramGEM: Geo-mapping for Energy and Minerals, Geomapping for Energy & Minerals (GEM) - Geo-mapping Frontiers
Released2013 04 02
AbstractPreliminary surficial geology studies, through aerial photograph interpretation and limited legacy data, were undertaken in the north half of the Jervoise River map area to provide an improved understanding of distribution and nature of surficial sediments, and regional glacial history. Widespread till veneer, hummocky till and streamlined till are common across the map area. Some areas of till are dissected by north-northwestward to northward trending glaciofluvial corridors consisting of eskers, ice-contact sediments, outwash plains, and locally zones of scoured bedrock. Small isolated glacial lakes were formed by ponding of meltwater, and their sediments are now characterized by thermokarst terrain. In the central area, a discontinuous moraine complex, consisting of glaciofluvial ridged sediments, ice-contact outwash plains and till ridges, forms part of the western segment of a major end moraine system referred to as the MacAlpine Moraine. Drumlins and crag-and-tails record a regional north-northwestward ice flow during the last glaciation. Rivers have reworked and deposited extensive alluvial sediments.
Summary(Plain Language Summary, not published)
The Jervoise River map (NTS 66-E) identifies surficial materials and associated landforms left by the retreat of the last glaciers to have covered the area about 9000 years ago. The surficial geology is based on aerial photograph interpretation and limited previous fieldwork. This work provides new geological knowledge and improve our understanding of the distribution, nature and glacial history of surficial materials.