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Yukon Digital Surficial Geology Compilation

RELEASE 1, 08-Apr-2014


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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).


GIS DATA

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. 

 

 SCALE-DEPENDENT LAYERS

1:250,000      1:100-125,000      1:50,000      1:20-25,000

Polygons        Polygons               Polygons        Polygons

Lines              Lines                     Lines             Lines

Points             Points                    Points           Points

SCALE-INDEPENDENT LAYERS

Till geochemisty samples

Stratigraphic section descriptions

Surficial geology map index

        

1. SURFICIAL POLYGONS (250k, 100-125k, 50k and 20-25k)

Polygon attributes captured include: surficial material, texture, age, surface expression and geomorphological processes.

2. SURFICIAL LINES (250k, 100-125k, 50k and 20-25k)

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.

3. SURFICIAL POINTS (250k, 100-125k, 50k and 20-25k)

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.

4. STRATIGRAPHIC SECTIONS

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.

5. TILL GEOCHEMISTRY

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.

6. SURFICIAL GEOLOGY MAP INDEX

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.


SUPPORTING DOCUMENTS     

 

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:

Simplified version of the Yukon terrain classification system (PDF)

Polygon coding definitions and standardized point/line terminology (MS Excel)

 

STANDARDIZED ArcGIS SYMBOLOGY

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.


SUGGESTED CITATION

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.


CONTACT INFORMATION

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.

  • Panya Lipovsky (Panya.Lipovsky@gov.yk.ca) 867-667-8520
  • Jeffrey Bond (Jeff.Bond@gov.yk.ca) 867-667-8514