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TitlePredictive surficial geology, Cape Stang area, Victoria Island, Nunavut, NTS 77-H and 77-G east
DownloadDownloads
AuthorSharpe, D R; Lesemann, J -E; Parkinson, W; Armstrong, L; Dods, E
SourceGeological Survey of Canada, Canadian Geoscience Map 173, 2020, 2 sheets, https://doi.org/10.4095/295702 (Open Access)
Image
Image
Year2020
PublisherNatural Resources Canada
Documentopen file
Lang.English
Maps2 maps
Map Info.surficial geology, remotely predicted and interpreted materials, 1:250,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 13 (NAD83)
Mediadigital; on-line
RelatedNRCan photo(s) in this publication
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); tif
ProvinceNunavut
NTS77G/01; 77G/02; 77G/07; 77G/08; 77G/09; 77G/10; 77G/15; 77G/16; 77H
AreaCape Stang; Victoria Island
Lat/Long WENS-110.0000 -104.0000 72.0000 71.0000
Subjectssurficial geology/geomorphology; geophysics; Nature and Environment; Science and Technology; remote sensing; satellite imagery; postglacial deposits; lag deposits; slumps; glacial deposits; glacial landforms; glacial features; tills; moraines; meltwater channels; eskers; paleocurrents; drumlinoids; glacial flutings; crag and tail; glacial erosion; glacial striations; sands; silts; gravels; permafrost; ground ice; periglacial features; thermokarst; ice-wedge polygons; glacial history; glaciation; Wisconsinian glacial stage; ice flow; deglaciation; submergence; emergence; shoreline changes; sea level changes; paleodrainage; depositional environment; bedrock geology; lithology; photography; remote predictive mapping; satellite image interpretation; geological mapping; eolian sediments; eolian veneer; colluvial and mass-wasting deposits; colluvial and mass-wasting veneer; alluvial sediments; glaciomarine sediments; glaciolacustrine subaqueous outwash fan sediments; glaciomarine veneer; glaciofluvial sediments; glaciofluvial terraced sediments; glaciofluvial subaerial outwash fan sediments; glaciofluvial subaqueous outwash fan sediments; esker sediments; hummocky tills; till veneer; undifferentiated deposits; geological contacts; beach crests; limit of submergence, marine; limit of submergence, lacustrine; esker ridges; buried drumlinoid ridges; crag-and-tail ridges; ice-flow directions; station locations, ground observation; sample locations; diamicton; landslide scars; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals, Rae Province Project Management
Released2020 06 09
AbstractThe predictive surficial geology map combines a remotely predicted map (RPM) and visually interpreted imagery from LANDSAT and SPOT data. Machine-automated classification was integrated with landform and regional ground-truth data. The tonal character of spectral data for moisture content, controlled by sediment texture, topographic position, vegetation, and material thickness is mapped by machine methods. Visual analysis of terrain form, with expert knowledge, reveals a series of crosscut, streamlined flow fields that record a complex glacial history, including glaciolacustrine and marine-limit water plains. Scoured bedrock in an east-west flow field south of Hadley Bay indicates that it is an erosional terrain which bifurcates high ice-cored terrain to the west. RPM methods are efficient, accurate, and save time in mapping spectral details on the ground surface, allowing the geologist more time in developing the essential geological models of glaciated terrain. This publication includes the predictive surficial-geology data in two formats: Sheet 1, raster (~75%)/vector (~25%), and Sheet 2, vector.
Summary(Plain Language Summary, not published)
This 1: 250K surficial geology map of Cape Stang, northeastern Victoria Island, represents a new mapping method that integrates automated mapping of satellite imagery and traditional interpretive mapping by a geologist from air and satellite photographs. Satellite images record spectral tone or moisture variation used to classify terrain types. Automated classification is aided by training areas that incorporate terrain analysis used by photograph interpreters (geologist). These include mapping materials based on visual characteristics (mainly affecting moisture content), such as; tone, texture, size, shape, pattern, and other terrain features. The tonal character of moisture content, controlled by sediment texture, topographic position, vegetation, and material thickness, is most efficiently mapped by machine methods. Visual identification of landforms along with expert field-based knowledge reveal a widespread series of cross-cutting flow fields that record the complex glacial history of eastern Victoria Island, including ancient lake and marine limit water plains.
GEOSCAN ID295702