| Title | Reconnaissance surficial geology, Cape MacDonnel, Northwest Territories, NTS 96-I |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Kerr, D E |
| Source | Geological Survey of Canada, Canadian Geoscience Map 453, 2022, 1 sheet, https://doi.org/10.4095/330074  Open Access |
| Links | Surficial geology map collection
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| Links | Collection de données de géologie de surface
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| Image |  |
| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, sediments, landforms, features, 1:125,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 10 (NAD83) |
| Media | on-line; digital |
| Related | This publication is related to the following publications |
| File format | readme
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| File format | pdf; rtf; gdb (ESRI® ArcGIS(TM) v.10.x); shp (ESRI® ArcGIS(TM) v.10.x); xml (ESRI® ArcGIS(TM) v.10.x); mxd (ESRI® ArcGIS(TM) v.10.x); xls (Microsoft® Excel® 2010) |
| Province | Northwest Territories |
| NTS | 96I |
| Area | Cape MacDonnel |
| Lat/Long WENS | -122.0000 -120.0000 67.0000 66.0000 |
| Subjects | surficial geology/geomorphology; Science and Technology; Nature and Environment; postglacial deposits; organic deposits; dunes; colluvial deposits; alluvial fans; landslides; debris flows; glacial
deposits; glacial landforms; glacial features; glacial lakes; ice contact deposits; tills; moraines; glacial flutings; kettles; meltwater channels; paleocurrents; kames; beach ridges; drumlinoids; sands; silts; gravels; boulders; clays; glacial
history; glaciation; Wisconsinian glacial stage; ice flow; deglaciation; permafrost; ground ice; periglacial features; thermokarst; patterned ground; ice wedges; depositional environment; paleodrainage; Ancestral Great Bear Lake; Glacial Lake
McConnell; snowpacks; icings; bog deposits; eolian sediments; colluvial and mass-wasting deposits; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; lacustrine deltaic sediments; glaciolacustrine
sediments; glaciolacustrine beach sediments; glaciolacustrine deltaic sediments; glaciolacustrine littoral sediments; glaciolacustrine nearshore sediments; glaciolacustrine veneer; glaciofluvial sediments; glaciofluvial outwash plain sediments;
glaciofluvial terraced sediments; glaciofluvial outwash fan sediments; esker sediments; hummocky tills; moraine complexes; ridged tills, moraine; streamlined tills; till veneer; geological contacts; thermokarst depressions; dune crests; beach crests;
terrace scarps; subglacial meltwater corridors; moraine ridges; ice-contact scarps; esker ridges; drumlinoid ridges; drumlin ridges; outcrops; ice-flow directions; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; index maps; aerial photographs |
| Program | Climate Change
Geoscience Permafrost |
| Released | 2022 11 01 |
| Abstract | Preliminary surficial geology, based on airphoto interpretation of the Cape MacDonnel map area, records three glacial and landform terrains. First, ridged, hummocky tills dominate Big Spruce and Scented
Grass hills between 300 and 650 m elevation. Second, undifferentiated till covers the lower flanks of Scented Grass and Big Spruce hills, also extending northeastward of the latter, where streamlined till occurs. Third, glaciolacustrine sediments are
confined to some lowlands below 200 to 250 m, where they discontinuously cover various till units along the shores of Great Bear Lake. Variable ice flow and local stagnation characterizes glacial history. In northern regions, ice flowed southwestward
and then veered northwestward, with evidence of local ice streaming. In east-central regions, flow was generally westward. In the southwest, flow was northwestward. Retreating and stagnating remnant ice deposited ridged and hummocky moraine, which
may also coincide with cold-based ice. Glacial Lake McConnell inundated lowlands to at least 250 m a.s.l. in the east, and to 210 m in the west. |
| Summary | (Plain Language Summary, not published)
The Cape MacDonnel map (NTS 96-I) identifies surficial materials and associated landforms left by the retreat of the last glaciers. The surficial geology
is based on aerial photograph interpretation. This work provides new geological knowledge and improves our understanding of the distribution and nature of the surficial geology cover, and the glacial history of this region. It contributes to resource
assessments and effective land use management. |
| GEOSCAN ID | 330074 |
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