RELEASE 1, 08-Apr-2014
175 surficial geology maps have been compiled by the Yukon Geological Survey (YGS) into a standardized GIS format. The maps provide approximately 80% coverage of the territory at scales ranging between 1:250,000 and 1:20,000 with some overlap between scales.
While all original feature descriptions have been preserved in the compilation, they havealso been converted to standardized values, following the Yukon terrain classification system (based on the British Columbia terrain classification system with minor modifications).
The compilation consists of 15 territory-wide GIS datasets, grouped by common map scale. All data are available for download in ESRI geodatabase, shapefile and Google Earth formats by searching for “surficial compilation” on the YGS integrated data system (YGSIDS) or directly through the links supplied below.
1:250,000 1:100-125,000 1:50,000 1:20-25,000
Polygon attributes captured include: surficial material, texture, age, surface expression and geomorphological processes.
Line features include: surficial geological contacts; glacial limits; glacial landforms such as cirques, arêtes, eskers, meltwater channels and moraines; and non-glacial landforms such as faults, lineaments, landslides, and escarpments.
Point features include: field stations, fossil and sample locations; glacial landforms such as erratics, kames, kettles, drumlins and flutings; permafrost features such as pingos, palsas, patterned ground and thermokarst depressions; and other non-glacial landforms such as landslides and tors.
Detailed descriptions of 421 stratigraphic sections, including: unit depths and thicknesses, surficial material classification, and descriptive notes such as texture, structure, sorting, colour, age and/or relative location.
Analytical results for 1102 till samples collected during 4 regional till sampling surveys in the Faro/Anvil Range, Weasel Lake, Finlayson Lake, and Glenlyon/East Carmacks areas between 1998 and 2002. Results for over 40 elements are included.
Compilation of map footprints and associated citation data (year, scale, author, publishing agency, map number, NTS sheet and map title) for the 175 published and unpublished surficial geology maps incorporated into the Yukon digital surficial geology compilation. PDf version also available.
All GIS datasets will be updated as new surficial geology mapping is completed in the territory. Check the “Compilation History” listed at the bottom of each compilation layer listed above for details on any updates.
Note: due to the large number of features captured in some territory-wide datasets, files may be relatively large in size (up to 100 MB). These may be slow to download and/or manipulate on older or slower computers or with a slow internet connection (especially for Google Earth files). If you are unable to download a product online, or require a smaller subset of the data for a specific area, please contact us.
YUKON DIGITAL SURFICIAL GEOLOGY COMPILATION (background information)
YUKON TERRAIN CLASSIFICATION SYSTEM
The Yukon terrain classification system is modeled after the BC terrain classification system (Howes & Kenk, 1988) with minor modifications as outlined in the following documents:
Custom fonts, ArcGIS MXD template project, and ArcMap layer files can be loaded into ArcGIS to display YGS standardized symbology for point, line and polygon surficial geology layers.
ORIGINAL SURFICIAL GEOLOGY SOURCE MAPS (PDF FORMAT)
PDF source maps, legends and related reports originally published by:
Yukon Geological Survey: YGS integrated data system (YGSIDS).
Geological Survey of Canada (GSC): GEOSCAN publications database.
Lipovsky, P.S. & Bond, J.D. (compilers), 2014. Yukon digital surficial geology compilation, digital release 1, 08-Apr-2014, <insert layer name if applicable>. Yukon Geological Survey.
Any errors noted by the user of this data should be promptly reported to the Yukon Geological Survey. Please notify either one of us if you have any questions or encounter inaccuracies or problems with the data.