Cretaceous Colorado Group Petroleum System GIS Polygons

1990s-era GIS shapefiles depict the Cretaceous Colorado Group petroleum system within the Western Canada Sedimentary Basin. The data was created by the Alberta Geological Survey, archived in the mid-1990s, and later edited and attributed in 2005-2006. It represents Figure 24 from a chapter on petroleum generation and migration in the Geological Atlas of the Western Canada Sedimentary Basin.

Use Cases

• Delineate petroleum system boundaries and source rock kitchens using polygon features.
• Analyze the spatial relationship between hydrocarbon generation zones and geological structures.
• Integrate polygon data with other subsurface layers to model migration pathways for oil and gas.

Strengths

• Data consolidated into single files by feature type for easier management.
• Edited in 2005-2006 to correct and attribute the original 1990s digital files.

Limitations

• Original data creation dates to the mid-1990s, potentially lacking modern geological interpretations.
• Specific row counts, column details, and spatial resolution are not provided.

Provenance

Source

Alberta Geological Survey, Government of Alberta.

Collection Method

Produced from archived digital files, edited to correct, attribute, and consolidate into shapefiles.

Time Range

Data reflects the Cretaceous geological period; creation and editing occurred mid-1990s to 2005-2006.

Freshness

Last platform update was 2026-03-04, but the underlying data is from 2005-2006 edits of 1990s sources.

Geography

Western Canada Sedimentary Basin, specifically the Cretaceous Colorado Group.