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TitleSurficial geology, Douglas Harbour (south), Nunavut, NTS 56-H south
DownloadDownloads
AuthorRandour, I; McMartin, I
SourceGeological Survey of Canada, Canadian Geoscience Map 312, 2017, 1 sheet, https://doi.org/10.4095/300296
Year2017
PublisherNatural Resources Canada
Editionprelim.
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, glacial deposits and features, 1:100,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 16W (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf (Adobe® Reader®); rtf; gdb (ESRI® ArcGIS(TM) v.10.x); tif; shp (ESRI® ArcGIS(TM) v.10.x); xml (ESRI® ArcGIS(TM) v.10.x); mxd (ESRI® ArcGIS(TM) v.10.x)
ProvinceNunavut
NTS56H/01; 56H/02; 56H/03; 56H/04; 56H/05; 56H06; 56H/07; 56H/08; 56H/10; 56H/11; 56H/12; 56H/13
AreaWager Bay; Douglas Harbour
Lat/Long WENS -90.0000 -88.0000 65.8333 65.0000
Subjectssurficial geology/geomorphology; postglacial deposits; organic deposits; peat; ice-wedge polygons; alluvial deposits; flood plains; terraces; marine deposits; beach ridges; sediment reworking; patterned ground; glacial features; glacial deposits; glacial landforms; glaciolacustrine deposits; glacial lakes; basins; glaciofluvial deposits; outwash plains; drift deposits; fans; hummocks; glacial flutings; ice contact deposits; tills; source rocks; till plains; solifluction; frost boils; thermokarst; scouring; kettles; scarps; paleogeography; shoreline changes; submergence; sea level changes; meltwater channels; flow trajectories; moraines; moraine, end; eskers; drumlinoids; drumlins; crag and tail; glacial flutings; deltas; kames; kame terraces; glacial striations; ice movement directions; sands; gravels; silts; clays; boulders; permafrost; periglacial features; depositional environment; bedrock geology; lithology; vegetation; glacial history; glaciation; deglaciation; ice sheets; ice flow; ice retreat; Tyrrell Sea; Chesterfield Fault; Wager Shear Zone; Keewatin Ice Divide; diamicton; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; photographs; geoscientific sketch maps
ProgramRae Province, Tehery-Wager Bay, GEM2: Geo-mapping for Energy and Minerals
ProgramPolar Continental Shelf Program
Image
Released2017 08 22
AbstractThe Douglas Harbour south map area is characterized by three terrain types differentiated by surficial materials and associated landforms (Fig. 1). The largest terrain type, situated south of the Keewatin Ice Divide, is covered by till deposits interspersed with southeast- to south-southeast trending subglacial meltwater corridors filled with eskers, hummocks, and reworked till. Streamlined till and striations indicate ice flow to the east-southeast and southeast in this area. Ice retreat to the northwest is indicated by end moraines, eskers, and various meltwater features (Fig. 2). Under and north of the divide, the prevalent surface material consists of bouldery till commonly scoured by proglacial and lateral meltwater channels flowing towards Wager Bay (Fig. 2). Such attributes, plus the absence of other glacial features, are thought to represent the position of the divide under a cold-based regime. Along the shores of Wager Bay, wave-washed bedrock surfaces and marine littoral deposits occur below the limit of the post-glacial sea at 113-130 m a.s.l.
Summary(Plain Language Summary, not published)
The Douglas Harbour South map area (NTS 56H-S) identifies surficial materials and associated landforms left by the retreat of the last remnants of the Laurentide Ice Sheet which covered the area until about 6000 years ago. The surficial geology is based on the interpretation of aerial photos, LANDSAT 7 and SPOT 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 work will support informed decision making for resource development and land use.
GEOSCAN ID300296