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TitleReconnaissance surficial geology, Duggan Lake, Nunavut, NTS 76-H
AuthorSt-Onge, D A; Kerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 113, 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
AreaDuggan Lake; Back River; Baillie River
Lat/Long WENS-106.0000 -104.0000 66.0000 65.0000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; glaciolacustrine deposits; glaciofluvial deposits; organic deposits; alluvial deposits; colluvial deposits; lacustrine deposits; Cenozoic; Quaternary
ProgramGEM: Geo-mapping for Energy and Minerals, Geomapping for Energy & Minerals (GEM) - Geo-mapping Frontiers
Released2013 03 19
AbstractPreliminary surficial geology studies, based on aerial photograph interpretation and limited legacy data, were undertaken in the Duggan Lake map area to provide an improved understanding of distribution and nature of surficial sediments and regional glacial history. Much of the area is extensively covered by a variety of glacial deposits and landforms, though bedrock outcrops can be found throughout the region. Widespread till veneer, blanket and streamlined till are common in the central and eastern areas, whereas hummocky till occurs in the west. Till-dominated terrain is cut by northwest-southeast trending glaciofluvial corridors consisting of eskers, ice-contact sediments, outwash plains and terraces, and locally elongated zones of scoured bedrock. Small isolated glacial lakes were formed by ponding of meltwater. In the northwest, a discontinuous moraine complex, consisting of glaciofluvial sediments and ridged till segments, forms the western extremity of a major end moraine system referred to as the MacAlpine Moraine. Drumlinoids and striations record a regional northwestward ice flow during the last glaciation.
Summary(Plain Language Summary, not published)
The Duggan Lake map (NTS 76-H) 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 was undertaken to provide new geological knowledge and improve our understanding of the distribution, nature and glacial history of surficial materials. This contributes to effective mineral exploration and supports informed decision making for resource development and land use.