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TitleSurficial geology, Curtis Lake north, Nunavut, NTS 56-I north
AuthorMcMartin, I; Campbell, J E; Dredge, L A
SourceGeological Survey of Canada, Canadian Geoscience Map 204, 2015, 1 sheet,
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, glacial deposits and landforms, 1:100,000
ProjectionUniversal Transverse Mercator Projection, zone 16 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; shp; xml; jpg; JPEG2000; xls
NTS56I/09; 56I/10; 56I/11; 56I/12; 56I/13; 56I/14; 56I/15; 56I/16
AreaCurtis Lake
Lat/Long WENS -90.0000 -88.0000 67.0000 66.5000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; moraines; glaciofluvial deposits; glaciolacustrine deposits; alluvial deposits; organic deposits; eolian deposits; lacustrine deposits; marine deposits; ice flow; flow trajectories; Cenozoic; Quaternary
Illustrationslocation maps
ProgramRae Province, Tehery-Wager Bay, GEM2: Geo-mapping for Energy and Minerals
Released2015 03 02
AbstractMuch of the Curtis Lake North map area is covered by streamlined till interspersed in the east by dissected bedrock ridges and plateaus, and in the west by boulder-strewn bedrock uplands. Multiple ice-flow indicators reveal a complex ice flow history during the last glaciation and following deglaciation (Figure 1). East of Curtis Lake, the largest streamlined landforms and early striations converge north-northeastward into Committee Bay, associated with ice streaming during the last glaciation. Pervasive north to north-northwestward streamlined landforms associated with late striations formed during deglaciation as the ice retreated southward. Large meltwater corridors carried meltwater northward, infilling north-trending valleys near the head of the Committee Bay drainage basin. Lateral meltwater channels developed in the southern uplands at the margin of cold-based ice remnants. In the southeast, evidence for a late deglacial eastward ice flow reversal is found in the form of weakly fluted till, fine striations, and glaciofluvial sediments.
Summary(Plain Language Summary, not published)
The Curtis Lake North map area (NTS 56I-N) identifies surficial materials and associated landforms left by the retreat of the last glaciers which covered the area until about 6000 years ago. The surficial geology is based on aerial photograph interpretation, satellite imageries and 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.