| Title | Reconnaissance surficial geology, Johnny Hoe River, Northwest Territories, NTS 96-A |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Kerr, D E; O'Neill, H B |
| Source | Geological Survey of Canada, Canadian Geoscience Map 424, 2020, 1 sheet, https://doi.org/10.4095/321631  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 | 2020 |
| 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 Reconnaissance surficial
geology, Keller Lake, Northwest Territories, NTS 95-P |
| 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®) |
| Province | Northwest Territories |
| NTS | 96A |
| Area | Johnny Hoe River |
| Lat/Long WENS | -122.0000 -120.0000 65.0000 64.0000 |
| Subjects | surficial geology/geomorphology; Nature and Environment; Science and Technology; postglacial deposits; organic deposits; landslide deposits; alluvial fans; glacial deposits; glacial landforms; glacial
features; glacial lakes; ice contact deposits; eskers; tills; till plains; moraines; moraine, ribbed; moraine, end; terraces; scarps; kettles; glacial scours; meltwater channels; paleocurrents; kames; beach ridges; drumlinoids; drumlins; crag and
tail; glacial flutings; ice flow; permafrost; ground ice; periglacial features; thermokarst; patterned ground; ice wedges; silts; sands; gravels; boulders; clays; glacial history; Wisconsinian glacial stage; glaciation; deglaciation; submergence;
emergence; shoreline changes; isostatic rebound; depositional environment; Ancestral Great Bear Lake; Glacial Lake McConnell; bog deposits; eolian sediments; colluvial and mass-wasting deposits; alluvial sediments; alluvial floodplain sediments;
alluvial terraced sediments; lacustrine sediments; lacustrine beach sediments; lacustrine deltaic sediments; lacustrine littoral sediments; lacustrine nearshore 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; glaciofluvial hummocky sediments; esker sediments; hummocky tills; ridged tills, moraine; streamlined tills; till blanket; geological contacts; beach crests; limit of submergence, glaciolacustrine; iceberg scour; moraine ridges;
ice-contact scarps; outcrops; ice-flow directions; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; index maps; aerial photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Mackenzie Corridor |
| Released | 2020 10 14 |
| Abstract | The Johnny Hoe River map area contains three glacial terrains. First, ridged, fluted, and undifferentiated till cover highlands between 300 and 500 m elevation in the northeast, southeast, and
southwest. Second, streamlined till plain covers the central and southern regions and the trough between the northeast and southeast highlands. Third, glaciolacustrine sediments cover the northwest lowlands below 240 m elevation. Changing flow and
local stagnation of ice characterized the ice retreat. A dominant northwestward ice flow first crossed the map area, with localized westward and southwestward flow in the extreme northeast. Subsequently, an ice stream developed late during
deglaciation, creating northwesterly oriented drumlinoids and megascale glacial lineations in central and southern regions. Between northeast and southeast highlands, the ice stream resulted in westward-oriented flutings superimposed on older
northwestward-trending drumlinoids. In the eastern highlands, retreating remnant ice deposited moraine ridges. Meltwater corridors and glaciofluvial sediments originating from highlands crosscut the map area. Glacial Lake McConnell inundated lowlands
in the northeast of the map area to 280 m a.s.l., and to 240 m in the west. |
| Summary | (Plain Language Summary, not published)
The Johnny Hoe River map (NTS 96-A) 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 | 321631 |
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