| Title | Surficial geology, Douglas Harbour (south), Nunavut, NTS 56-H south |
| Download | Downloads |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Randour, I; McMartin, I |
| Source | Geological Survey of Canada, Canadian Geoscience Map 312, 2017, 1 sheet, https://doi.org/10.4095/300296 (Open Access) |
| Image |  |
| Year | 2017 |
| Publisher | Natural Resources Canada |
| Edition | prelim. |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, glacial deposits and features, 1:100,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 16W (NAD83) |
| Media | on-line; digital |
| Related | NRCan photo(s) in this
publication |
| File format | readme
|
| File format | pdf (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) |
| Province | Nunavut |
| NTS | 56H/01; 56H/02; 56H/03; 56H/04; 56H/05; 56H06; 56H/07; 56H/08; 56H/10; 56H/11; 56H/12; 56H/13 |
| Area | Wager Bay; Douglas Harbour |
| Lat/Long WENS | -90.0000 -88.0000 65.8333 65.0000 |
| Subjects | surficial 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 |
| Illustrations | location maps; index maps; photographs; geoscientific sketch maps |
| Program | GEM2:
Geo-mapping for Energy and Minerals, Rae Province, Tehery-Wager Bay |
| Program | Polar Continental Shelf
Program |
| Released | 2017 08 22 |
| Abstract | The 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 ID | 300296 |
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