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020 |a9780660704524
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn---
0861 |aM183-2/9169E-PDF
1001 |aLawley, C. J. M., |eauthor.
24510|aCanada geological map compilation / |cC.J.M. Lawley, P. Giddy, L. Katz, N. Chu, A. Francis, J. Carvajal, M. Pinheiro, K. Tirona, A. Dettman, H. Chen, and F. Aucoin.
264 1|a[Ottawa] : |bNatural Resources Canada = Ressources naturelles Canada, |c2024.
264 4|c©2024
300 |a1 online resource (18 pages) : |bcolour illustration, colour maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aGeological Survey of Canada open file, |x2816-7155 ; |v9169
500 |aIssued also in French under title: Compilation de cartes géologiques du Canada.
504 |aIncludes bibliographical references (pages 14-18).
5203 |a"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 was standardized, 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 one national-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 a semi-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-based information 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), and reliability. 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 data gaps and to update geoscientific information for future applications of the CGMC"--Abstract, page 1.
650 0|aGeology|zCanada|xMaps|xDatabases.
7102 |aGeological Survey of Canada, |eissuing body.
77508|tCompilation de cartes géologiques du Canada / |w(CaOODSP)9.949417
830#0|aOpen file (Geological Survey of Canada)|x2816-7155 ; |v9169.|w(CaOODSP)9.506878
85640|qPDF|s2.14 MB|uhttps://publications.gc.ca/collections/collection_2024/rncan-nrcan/m183-2/M183-2-9169-eng.pdf|zOpen file report
8564 |qHTML|sN/A|uhttps://doi.org/10.4095/pf995j5tgu|zComplete dataset