Dunvegan Formation Structural Contours GIS Dataset

One GIS dataset from a collection representing Chapter 22 of the Geological Atlas of the Western Canada Sedimentary Basin. Shapefiles contain polygon features depicting the Dunvegan Formation structure, originally created by the Alberta Geological Survey in the mid-1990s and edited in 2005-06. The data is provided by the Government of Alberta and was last updated in March 2026.

Use Cases

• Analyze polygon features representing structural contours to model subsurface geology of the Dunvegan Formation.
• Integrate structure contour data with other geological layers for basin-scale geospatial analysis.
• Use the attributed shapefile data to study the relationship between structure and sediment deposition in the Cretaceous period.

Strengths

• Data was corrected, attributed, and consolidated into single files in 2005-06, improving usability.
• Part of a formal reference volume (Geological Atlas) documenting subsurface geology.

Limitations

• Original digital files were created in the mid-1990s, so the underlying data may be temporally stale.
• Specific row counts, column details, and spatial extents are unknown from the description.

Provenance

Source

Alberta Geological Survey, Government of Alberta.

Collection Method

Shapefiles produced from archived digital files, edited to correct and attribute data.

Time Range

Data reflects the geological structure of the Cretaceous Dunvegan Formation; digital files created mid-1990s.

Freshness

Platform metadata indicates a last update in March 2026, though core data is from the 1990s.

Geography

Western Canada Sedimentary Basin.