Modelled Sandiness Distribution in the Paskapoo Formation

Modelled Sandiness of the Paskapoo Formation, Alberta is a digital dataset from the Alberta Geological Survey representing the three-dimensional distribution of sandiness. Sand-abundance values, ranging from 0 to 1, were derived from log analysis of water-well lithologs and gamma-ray logs, then interpolated using kriging into a regular block model. The dataset was last updated by the Government of Alberta in March 2026.

Use Cases

• Model aquifer geometry by applying different sandiness cutoff thresholds to the 0-1 sand-abundance values.
• Analyze the vertical distribution of sand using the 25 m thick slice intervals and their assigned midpoint elevations.
• Create 3D isovalue plots of sand distribution by importing the block model data with x, y, and z cell dimensions into software like Voxler.
• Delineate regional lithostratigraphic units within the formation using the modelled three-dimensional sandiness values.

Strengths

• Sandiness values are derived from a detailed methodology published in Alberta Geological Survey Bulletin 66.
• Data is modelled in a 3D block structure with defined cell dimensions of 1000 m (x,y) and 25 m (z).
• Output values have a clear, bounded range from 0 (no sand) to 1 (100% sand).

Limitations

• The dataset is a modelled output, not direct measurements, introducing interpolation uncertainty.
• Specific sample size (row count) and temporal coverage of the source data are not provided.
• Geographic coverage is limited to the Paskapoo Formation in Alberta, Canada.

Provenance

Source

Alberta Geological Survey, Government of Alberta.

Collection Method

Sand-abundance values determined from log analysis of water-well lithologs and petroleum gamma-ray logs, then kriged into a 3D block model.

Freshness

Last updated March 2026.

Geography

Paskapoo Formation, Alberta, Canada.