| Title | Reconnaissance surficial geology, Beechey Lake, Nunavut, NTS 76-G |
| 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 447, 2022, 1 sheet, https://doi.org/10.4095/329669  Open Access |
| Links | Surficial geology map collection
|
| Links | Collection de données de géologie de surface
|
| 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 13 (NAD83) |
| Media | digital; on-line |
| Related | This publication is related to the following publications |
| File format | readme
|
| 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 | Nunavut |
| NTS | 76G |
| Area | Beechey Lake |
| Lat/Long WENS | -108.0000 -106.0000 66.0000 65.0000 |
| Subjects | surficial geology/geomorphology; Nature and Environment; Science and Technology; postglacial deposits; organic deposits; raised beaches; deltas; alluvial fans; dunes; glacial deposits; glacial
landforms; glacial features; tills; moraines; glacial lakes; ice contact deposits; eskers; glacial flutings; glacial scours; kettles; meltwater channels; paleocurrents; kames; drumlinoids; drumlins; crag and tail; glacial striations; sands; silts;
gravels; boulders; clays; glacial history; glaciation; deglaciation; ice flow; ice margins; paleodrainage; permafrost; ground ice; periglacial features; thermokarst; ice-wedge polygons; felsenmeer; solifluction; depositional environment; snowpacks;
icings; eolian sediments; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; glaciomarine sediments; glaciomarine deltaic sediments; glaciolacustrine sediments; glaciolacustrine beach sediments;
glaciolacustrine deltaic sediments; glaciofluvial sediments; glaciofluvial outwash plain sediments; glaciofluvial terraced sediments; esker sediments; hummocky tills; ridged tills, moraine; streamlined tills; till veneer; till blanket; geological
contacts; landslide scars; thermokarst depressions; dune crests; terrace scarps; beach crests; subglacial meltwater corridors; moraine ridges; ice-contact scarps; esker ridges; drumlinoid ridges; drumlin ridges; crag-and-tail ridges; pre-crag ridges;
ice-flow directions; fluted drift; fluted bedrock; outcrops; station locations, ground observation; submergence, lacustrine; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; index maps; aerial photographs |
| Program | Climate Change Geoscience Coastal Infrastructure |
| Released | 2022 10 25 |
| Abstract | Preliminary mapping studies of Beechey Lake map area, through aerial photograph interpretation and limited legacy data, improve our understanding of surficial sediments and glacial history. The area is
dominated by glacially and meltwater-scoured bedrock, hummocky moraine, till of varying thickness occasionally streamlined, and thin ridged till. Glacial lake sediments are predominantly in river valley lowlands. Glaciolacustrine delta and raised
beach elevations range from 410 m to 230 m and 440 m to 290 m, respectively. Glaciofluvial deposits consist of eskers, ice-contact mounds, proglacial outwash plains, and terraces. Basal meltwater from regional ice stagnation and downwasting scoured
subglacial and proglacial meltwater corridors and channels of varying width, many trending northwest. A glaciomarine delta was deposited in a high-sea marine environment following deglaciation in the northernmost map area. Streamlined till and
bedrock landforms and striations indicate regional ice flow was dominantly northwest. A late westward and southwestward deglacial ice flow is preserved sporadically in the easternmost map area, and well preserved in the west-central and southwestern
map areas, west of a discontinuous hummocky moraine belt. |
| Summary | (Plain Language Summary, not published)
The map 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, nature and glacial history of surficial materials. The map supports informed decision making for resource assessments,
development, and effective land use management. |
| GEOSCAN ID | 329669 |
|
|