| Title | Reconnaissance surficial geology, Arctic Sound, Nunavut, NTS 76-N |
| 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 423, 2022, 1 sheet, https://doi.org/10.4095/321440  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 12 (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 | 76N |
| Area | Arctic Sound; James River |
| Lat/Long WENS | -110.0000 -108.0000 68.0000 67.0000 |
| Subjects | surficial geology/geomorphology; Nature and Environment; Science and Technology; postglacial deposits; organic deposits; colluvial deposits; fans; landslides; landslide deposits; talus; alluvial fans;
marine sediments; glacial deposits; glacial features; glacial landforms; ice contact deposits; eskers; tills; kettles; moraines; drumlinoids; crag and tail; kames; glacial striations; meltwater channels; paleocurrents; beach ridges; drumlins; glacial
flutings; roches moutonnees; glacial lakes; water levels; glacial scours; clays; silts; sands; gravels; boulders; glacial history; glacial stages; Wisconsinian glacial stage; glaciation; ice flow; deglaciation; depositional environment; shoreline
changes; sea level changes; isostatic rebound; postglacial emergence; permafrost; ground ice; periglacial features; thermokarst; patterned ground; solifluction; ice-wedge polygons; massive ice; landforms; dunes; escarpments; sedimentary structures;
Wisconsin Glaciation; snowpacks; icings; eolian sediments; colluvial and mass-wasting veneer; colluvial and mass-wasting blanket; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; marine beach
sediments; marine deltaic sediments; marine littoral sediments; marine veneer; marine blanket; glaciomarine sediments; glaciomarine deltaic sediments; glaciomarine veneer; glaciomarine blanket; glaciolacustrine sediments; glaciolacustrine deltaic
sediments; glaciofluvial sediments; glaciofluvial outwash plain sediments; esker sediments; hummocky tills; till veneer; till blanket; dune crests; gullied terrain; geological contacts; landslide escarpments; landslide scars; terrace scarps; limit of
submergence, marine; subglacial meltwater corridors; moraine ridges; esker ridges; drumlinoid ridges; drumlin ridges; crag-and-tail ridges; pre-crag ridges; ice-flow directions; outcrops; station locations, ground observation; retrogressive thaw
flows; Phanerozoic; Quaternary; Cenozoic |
| Illustrations | location maps; index maps; aerial photographs |
| Program | Climate Change Geoscience |
| Released | 2022 03 08 |
| Abstract | The Arctic Sound map area consists primarily of glacially scoured bedrock, minor till in the southwest, and postglacial marine sediments in coastal lowlands and inland along river valleys. The till
deposits are cut to bedrock by subglacial meltwater corridors defined by eskers and other glaciofluvial sediments. Glacial lakes occupied the James River valley where retreating or stagnant ice blocked drainage to the east. Glaciolacustrine deltas
record falling lake levels, from 310 m to 290 m and 260 m elevation. Striations and streamlined landforms indicate ice flow to the north-northwest, and later crosscutting relationships recording minor variations locally. Orientation of minor
moraines, eskers, and outwash plains suggest ice recession was primarily southeastward. A series of small glaciomarine deltas following a northwest-southeast trend, and postglacial marine deltas and fine-grained sediments, reach elevations of 210 m
in the northwest and 200 m in the southeast. Isostatic rebound caused marine regression, forming raised beaches from 210 m elevation to current sea level. |
| 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 and fieldwork. 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 | 321440 |
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