This GIS dataset is a Yukon-wide compilation of detailed statigraphic section descriptions from 421 locations as depicted on 51 published and unpublished surficial geology maps of various scales produced by the Geological Survey of Canada and Yukon Geological Survey. Attribute data for 1198 section layers includes: unit depths and thicknesses; surficial material classification; and detailed descriptive notes such as texture, structure, sorting, colour, age and/or location.