Calcareous Ostracod Cummings Paleogeography GIS Polygons

GIS polygon features depict the calcareous, ostracod, and Cummings paleogeography of the Western Canada Sedimentary Basin. The data was created by the Alberta Geological Survey in the mid-1990s and later edited in 2005-06. It represents Figure 4 from Chapter 17 of the Geological Atlas of the Western Canada Sedimentary Basin.

Use Cases

• Analyze the spatial distribution of calcareous paleogeographic units using polygon geometry and attributes.
• Map the extent of ostracod-bearing facies relative to other paleogeographic features in the dataset.
• Study the Cummings formation's paleogeographic boundaries through the provided polygon shapes and their properties.
• Integrate these paleogeography polygons with other geological layers from the Atlas for basin evolution studies.

Strengths

• Data is part of the authoritative Geological Atlas of the Western Canada Sedimentary Basin.
• Polygon features were consolidated and attributed during a dedicated 2005-06 editing process.

Limitations

• Original digital files were created in the mid-1990s, potentially using outdated methodologies.
• Specific column names, row counts, and data volume are unknown from the provided description.

Provenance

Source

Alberta Geological Survey, Government of Alberta.

Collection Method

Shapefiles produced from archived digital files, later corrected and consolidated.

Time Range

Data creation in the mid-1990s, with edits in 2005-06.

Freshness

The dataset was last updated on the platform in March 2026, though the core data is from earlier edits.

Geography

Western Canada Sedimentary Basin, with a focus on Alberta.