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TitleReconnaissance surficial geology, Tinney Hills, Nunavut, NTS 76-J
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorKerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 427, 2022, 1 sheet, Open Access logo Open Access
LinksSurficial geology map collection
LinksCollection de données de géologie de surface
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, sediments, landforms, features, 1:125,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 13 (NAD83)
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf; 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)
AreaTinney Hills
Lat/Long WENS-108.0000 -106.0000 67.0000 66.0000
Subjectssurficial geology/geomorphology; Nature and Environment; Science and Technology; snow; permafrost; ground ice; periglacial features; thermokarst; ice-wedge polygons; patterned ground; solifluction; postglacial deposits; organic deposits; landslides; flow trajectories; landslide deposits; alluvial fans; marine sediments; glacial deposits; glacial features; glacial landforms; fans; ice contact deposits; eskers; tills; glacial scours; glacial flutings; trimlines; kettles; meltwater channels; paleocurrents; eskers; beach ridges; moraines; moraine, ribbed; drumlinoids; crag and tail; roches moutonnees; kames; glacial striations; glacial lakes; sands; gravels; silts; clays; boulders; landforms; scarps; escarpments; gossans; glacial history; glaciation; Wisconsinian glacial stage; ice flow; submergence; deglaciation; ice retreat; isostatic rebound; emergence; sea level changes; shoreline changes; depositional environment; snowpacks; icings; eolian sediments; dune crests; colluvial and mass-wasting deposits; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; lacustrine deltaic sediments; lacustrine littoral sediments; marine terraced sediments; marine beach sediments; marine deltaic sediments; marine littoral sediments; marine veneer; marine blanket; glaciomarine sediments; glaciomarine beach sediments; glaciomarine deltaic sediments; glaciomarine veneer; glaciomarine blanket; glaciolacustrine 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; subglacial meltwater corridors; gullied terrain; beach crests; landslide escarpments; landslide scars; terrace scarps; ice-contact scarps; limit of submergence, marine; moraine ridges; esker ridges; drumlinoid ridges; drumlin ridges; crag-and-tail ridges; pre-crag ridges; ice-flow directions; outcrops; station locations, remote observation; station locations, ground observation; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; aerial photographs
ProgramClimate Change Geoscience Permafrost
Released2022 02 11
AbstractThe Tinney Hills map area consists primarily of glacially and meltwater scoured bedrock, discontinuous till in the southwest and central-east, and postglacial marine sediments in coastal lowlands and along river valleys inland. The boundaries of many till deposits are cut to bedrock by widespread subglacial meltwater erosion. Ridged till in particular, is often associated with eskers and other glaciofluvial sediments and meltwater erosion. Striations and streamlined till landforms indicate regional ice flow towards the north-northwest and northwest, and later crosscutting relationships recording minor variations locally. Orientation of eskers and outwash plains suggest ice recession was primarily southeastward. Small, isolated glacial lakes formed where retreating or stagnant ice temporarily blocked local drainage. Below 200 to 220 m elevation, the region was inundated by the sea during ice retreat. Glaciomarine and marine sediments consist of littoral beach and offshore sediments, winnowed till surfaces, and isolated deltas. Isostatic rebound caused marine regression, recorded by deltas and beaches at 210 to 220 m elevation, and decreasing 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 limited 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.

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