General geologic map of the world

Online link https://mrdata.usgs.gov/geology/world/
Description World geology compiled by the Geological Survey of Canada at approximately 1:35,000,000 scale, specifying age (to era) and general lithology of major geologic units, with sources.
Originators Kirkham, R. V. (Compiler); Chorlton, L. B. (Compiler); and Carriere, J. J. (Compiler)
Publication Geological Survey of Canada Open-File Report 2915d
Metadata Questions and answers

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States or counties

Reduced-size image of the map data, symbolized using lithology
Reduced-size image of the map data, symbolized using lithology