| Title | Surficial geology, Dendale Lake, Yukon-Northwest Territories, NTS 95-C/15 |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Geological Survey of Canada |
| Source | Geological Survey of Canada, Canadian Geoscience Map 456, 2023, 1 sheet, https://doi.org/10.4095/331886  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 | 2023 |
| Publisher | Natural Resources Canada |
| Edition | surficial data model v.2.4 conversion |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, sediments, landforms, features, 1:50,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 10 (NAD83); Universal Transverse Mercator Projection, UTM zone 15 (NAD83) |
| Media | on-line; digital |
| Related | NRCan photo(s) in this
publication |
| Related | This publication is related to the following publications |
| File format | readme
|
| File format | pdf |
| Province | Yukon; Northwest Territories |
| NTS | 95C/15 |
| Area | Dendale Lake |
| Lat/Long WENS | -125.0000 -124.5000 61.0000 60.7500 |
| Subjects | surficial geology/geomorphology; geochronology; Nature and Environment; Science and Technology; organic deposits; peat; bogs; fens; colluvial deposits; mass wasting; talus; landslide deposits; slumps;
rock glaciers; alluvial deposits; gravels; sands; silts; flood plains; alluvial fans; terraces; Wisconsinian glacial stage; glaciolacustrine deposits; deltaic sediments; deltas; glaciofluvial deposits; outwash plains; fans; ice contact deposits;
kames; till deposits; bedrock geology; sedimentary rocks; sandstones; shales; thermokarst; palsa bogs; paleodrainage; meltwater channels; moraines; drumlinoids; drumlins; clasts; striations; cirques; Mattson Formation; Besa River Formation; Sikanni
Formation; Chinkeh Formation; Tika Syncline; Carboniferous; Devonian; Cretaceous |
| Illustrations | location maps; index maps; tables; photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Information Management |
| Released | 2023 09 08 |
| Abstract | This map area is situated within the Hyland Plateau and comprises the headwaters of the La Biche River. It is framed by the La Biche Range on the east, the Tlogotsho Range on the north, and an unnamed
ridge along its western boundary. The map area was inundated by the Cordilleran Ice Sheet during the Late Wisconsinan glaciation, and ice advanced east to northeast across the region. Coalescence with the Laurentide Ice Sheet is considered to have
occurred just east and north of this area. During deglaciation, ice retreated generally south and westwards. Prominent northward-aggrading ice-contact and proglacial deltas formed between retreating Cordilleran and Laurentide ice margins, within
early stages of glacial Lake Nahanni. Well-developed cirque basins point to a prolonged glacial history that predates the Late Wisconsinan glaciation. Small lobate moraines extending into valley bottoms below these cirques suggests that during
regional Late Wisconsinan deglaciation, upland ice persisted through a phase of late glacial-early Holocene alpine cirque glaciation. |
| Summary | (Plain Language Summary, not published)
This map displays the surficial geology at the north end of the La Biche River, bounded by the La Biche and Tika ranges to the east and west,
respectively, and the Tlogotsho Plateau to the north. The area was inundated by the Cordilleran Ice Sheet during the late Wisconsinan glaciation, and a staircase of deltas descending northward and eastward record the retreat of the Cordilleran ice
and a large proglacial lake occupying the Nahanni River valley to the north, impounded against eastward retreating Laurentide ice. Extents of landsliding in this map sheet is markedly less than in adjoining areas. |
| GEOSCAN ID | 331886 |
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