The Yukon Geological
Survey (YGS) has compiled over 195 surficial geology maps into a standardized
GIS format, providing approximately 80% coverage of the territory. The maps
range in scales from 1:250,000 to 1:10,000 with spatial overlap between scales.
The original maps were produced by various agencies, including the Geological
Survey of Canada, YGS, Yukon Government, universities, and the City of
Whitehorse.
All original feature
descriptions have been preserved and also converted to standardized values
using the Yukon terrain classification system. The compilation includes 4 GIS
datasets and supporting documents available for download via YGS integrated data system (YGSIDS) or GeoYukon. A .lyr file is provided to symbolize feature classes and differentiate overlapping maps at
different scales. Additionally, there is a surficial geology map index.
The polygon
attributes captured include surficial material, texture, age, surface
expression, and geomorphological processes.
Line features
include geological contacts, glacial limits, glacial landforms (cirques,
arêtes, eskers, meltwater channels, moraines), and non-glacial landforms
(faults, lineaments, landslides, escarpments).
Point features
include field station, fossil and sample locations, glacial landforms
(erratics, kames, kettles, drumlins, flutings), permafrost features (pingos,
palsas, patterned ground, thermokarst depressions), and other non-glacial
landforms (landslides, tors).
The map index
provides information on each map publication such as author, map title, map
scale, publisher.
These data are
valuable for land-use applications in the territory, including: mineral and
placer exploration, geotechnical engineering, infrastructure planning, granular
resource assessments, permafrost modeling, agricultural assessments, forest
management, and biophysical or ecological land classification.
Distributed from GeoYukon by the Government of Yukon. Discover more digital map data and interactive maps from Yukon's digital map data collection.
For more information: geomatics.help@yukon.ca
