Canada Geological Map Compilation

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.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 21:19 (UTC)
Created	April 17, 2026, 21:19 (UTC)
contact_email	nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
contact_person	{"en": "Government of Canada; Natural Resources Canada; Geological Survey of Canada,nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca", "fr": "Gouvernement du Canada; Ressources naturelles Canada; Commission géologique du Canada,nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca"}
criticality_level	[]
data_dictionary	EPSG: 3978,http://www.epsg-registry.org/,6.14
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2024-03-01 00:00:00
open_canada_keywords	{"en": ["Archean", "Cenozoic", "commodity", "deposit", "resource assessment", "Geochemistry", "Geochronology", "geology", "Coastal and Marine Geology", "Areal geology; maps and charts", "Bedrock Geology", "Economic geology of metal ore deposits", "Economic geology; general--geology of deposits", "Geophysics; applied", "Geophysics; solid-Earth", "showing", "Lithology", "Mesozoic", "mineral", "critical mineral", "Minerals", "Paleozoic", "Petrology; igneous and metamorphic", "Petrology; sedimentary", "Phanerozoic", "Precambrian", "advanced project", "prospect", "Proterozoic", "Igneous rock", "Metamorphic rock", "Plutonic rock", "Sedimentary rock", "Volcanic rock", "earth sciences", "stratigraphy", "continental crust", "igneous rock", "volcanic rock", "sedimentary bassin", "Natural resources", "Geological maps", "Geology"], "fr": ["Archéen", "Cénozoïque", "commodité", "dépôt", "évaluation des ressources", "Géochimie", "Géochronologie", "géologie", "Géologie côtière et marine", "Géologie d'une région; cartes et diagrammes", "Géologie de la roche en place", "Géologie économique des gisements métallifères", "Géologie économique; catégorie générale--gîtologie", "Géophysique; appliquée", "Géophysique; lithosphère", "indice", "Lithologie", "Mésozoïque", "minéral", "minéral critique", "Minéraux", "Paléozoïque", "Pétrologie; ignée et métamorphique", "Pétrologie; sédimentaire", "Phanérozoïque", "Précambrien", "projet avancé", "prospect", "Protérozoïque", "Roche ignée", "Roche métamorphique", "Roche plutonique", "Roche sédimentaire", "Roche volcanique", "sciences de la terre", "stratigraphie", "croûte continentale", "roche ignée", "roche volcanique", "bassin sédimentaire", "Ressources naturelles", "Carte géologique", "Géologie"]}
open_canada_subject	["form_descriptors", "nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Compilation de cartes géologiques du Canada
update_frequency	unknown