Lower Jurassic Petroleum System Polygons for Western Canada

Polygon features represent the Lower Jurassic petroleum system, a key source-rock interval, within the Western Canada Sedimentary Basin. Shapefiles were created by the Alberta Geological Survey from mid-1990s digital archives and later edited for consolidation in 2005-06. This dataset is part of a larger geological atlas chapter on petroleum generation and migration.

Use Cases

• Map the spatial extent of the Lower Jurassic petroleum system using polygon overlay features to define source-rock boundaries.
• Analyze the relationship between petroleum system polygons and other geological features like faults or reservoir units for basin modeling.
• Integrate polygon attributes with well data to assess hydrocarbon generation potential across the Western Canada Sedimentary Basin.

Strengths

• Data originates from the authoritative Alberta Geological Survey, ensuring geological accuracy.
• Polygon features provide a consolidated, attributed representation of a specific petroleum system for GIS analysis.

Limitations

• Underlying digital files were created in the mid-1990s, potentially limiting modern analytical precision.
• Specific row counts, column attributes, and data completeness metrics are not provided.

Provenance

Source

Government of Alberta, Alberta Geological Survey.

Collection Method

Produced from archived digital files, edited and consolidated into shapefiles by feature type and figure.

Time Range

Data reflects the geological understanding and digital compilation from the mid-1990s to 2005-06.

Freshness

Data was last edited in 2005-06, with a platform metadata update in 2026.

Geography

Western Canada Sedimentary Basin.