Description

The Canada Geological Map Compilation (CGMC) is a database of previously published bedrock geological maps sourced from provincial, territorial, and other geological survey organizations. The geoscientific information included within these source geological maps wasstandardized, translated to English, and combined to provide complete coverage of Canada and support a range of down-stream machine learning applications. Detailed lithological, mineralogical, metamorphic, lithostratigraphic, and lithodemic information was not previously available as onenational-scale product. The source map data was also enhanced by correcting geometry errors and through the application of a new hierarchical generalized lithology classification scheme to subdivide the original rocks types into 35 classes. Each generalized lithology is associated with asemi-quantitative measure of classification uncertainty. Lithostratigraphic and lithodemic names included within the source maps were matched with the Lexicon of Canadian Geological Names (Weblex) wherever possible and natural language processing was used to transform all of the available text-basedinformation into word tokens. Overlapping map polygons and boundary artifacts across political boundaries were not addressed as part of this study. As a result, the CGMC is a patchwork of overlapping bedrock geological maps with varying scale (1:30,000-1:5,000,000), publication year (1996-2023), andreliability. Preferred geological and geochronological maps of Canada are presented as geospatial rasters based on the best available geoscientific information extracted from these overlapping polygons for each map pixel. New higher resolution geological maps will be added over time to fill datagaps and to update geoscientific information for future applications of the CGMC.

Resources

Name	Format	Description	Link
Compilation de cartes géologiques du Canada - Anglais	HTML		https://doi.org/10.23687/d4f80bd3-17e3-a7e8-4bfe-d22a430678d5
Canada Geological Map Compilation - French	HTML		https://doi.org/10.23687/d4f80bd3-17e3-a7e8-4bfe-d22a430678d5
Canada Geological Map Compilation - Open file - French	PDF		https://doi.org/10.4095/pf995j5tgu
Canada Geological Map Compilation - Open file - English	PDF		https://doi.org/10.4095/pf995j5tgu
Canada Geological Map Compilation - Dataset download - French	Unknown		https://ftp.maps.canada.ca/pub/nrcan_rncan/Geology_Geologie/geologic_map_compilation-compilation_cartes_geologiques/2024_CGMC_Lithology_EPSG3978.tif
Canada Geological Map Compilation - Dataset download - English	Unknown		https://ftp.maps.canada.ca/pub/nrcan_rncan/Geology_Geologie/geologic_map_compilation-compilation_cartes_geologiques/2024_CGMC_Lithology_EPSG3978.tif
Canada Geological Map Compilation - Legend file (gpkg) - English	Unknown		https://ftp.maps.canada.ca/pub/nrcan_rncan/Geology_Geologie/geologic_map_compilation-compilation_cartes_geologiques/compil_geologic_map_en.qml
Canada Geological Map Compilation - Legend file (gpkg) - French	Unknown		https://ftp.maps.canada.ca/pub/nrcan_rncan/Geology_Geologie/geologic_map_compilation-compilation_cartes_geologiques/compil_geologic_map_fr.qml
Canada Geological Map Compilation - ESRI Rest Service - English	Ersi REST		https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/cdn_geol_compil_en/MapServer/0
Canada Geological Map Compilation - ESRI Rest Service - French	Ersi REST		https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/cdn_geol_compil_fr/MapServer/0
Canada Geological Map Compilation - WMS Service - English	WMS		https://maps-cartes.services.geo.ca/server_serveur/services/NRCan/cdn_geol_compil_en/MapServer/WMSServer?request=GetCapabilities&service=WMS
Canada Geological Map Compilation - WMS Service - French	WMS		https://maps-cartes.services.geo.ca/server_serveur/services/NRCan/cdn_geol_compil_fr/MapServer/WMSServer?request=GetCapabilities&service=WMS

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