Ordovician-Silurian Subcrop and Outcrop Features for the Williston Basin

Shapefile data from the Geological Atlas of the Western Canada Sedimentary Basin illustrates Ordovician-Silurian subcrop and outcrop line features within the Williston Basin. The Government of Alberta's Geological Survey originally created the digital files in the mid-1990s, with subsequent edits in 2005-2006. This dataset was last updated on the platform in March 2026.

Use Cases

• Map Ordovician-Silurian subcrop and outcrop line features to analyze basin structure and stratigraphic boundaries.
• Integrate these geospatial line features with other subsurface geology layers from the Atlas for regional geological modeling.
• Use the attributed line features to study the spatial distribution and continuity of Ordovician-Silurian strata in the Williston Basin.

Strengths

• Data is part of the authoritative Geological Atlas of the Western Canada Sedimentary Basin reference volume.
• Original digital files were edited and consolidated in 2005-2006 to correct and attribute the data.

Limitations

• The core digital data originates from the mid-1990s, which may limit its alignment with modern geological interpretations.
• Specific details on row count, column attributes, and spatial resolution are not provided in the description.

Provenance

Source

Government of Alberta, Alberta Geological Survey.

Collection Method

Shapefiles produced from archived digital files created by the Alberta Geological Survey, later edited to correct and attribute data.

Time Range

Geological time period covers Middle Ordovician to Lower Devonian strata.

Freshness

Platform record was updated in March 2026, though the underlying geological data is older.

Geography

Williston Basin, within the Western Canada Sedimentary Basin region.