Williston Basin Phanerozoic Isopach and Structural Elements (GIS data, polygon features)

The Geological Atlas of the Western Canada Sedimentary Basin was designed primarily as a reference volume documenting the subsurface geology of the Western Canada Sedimentary Basin. This GIS dataset is one of a collection of shapefiles representing part of Chapter 3 of the Atlas, Structure and Architecture of the Western Canada Sedimentary Basin, Figure 11, Williston Basin Phanerozoic Isopach and Structural Elements. Shapefiles were produced from archived digital files created by the Alberta Geological Survey in the mid-1990s, and edited in 2005-06 to correct, attribute and consolidate the data into single files by feature type and by figure.