The digital 1:500 000 regolith map of Western Australia (preliminary edition) is based on published GSWA 1:250 000 and 1:100 000 series geological maps. These maps have been simplified for display at 1:500 000 scale to include nine geological units (exposed (areas of outcrop), colluvium, alluvium, lacustrine, coastal, tidal, calcrete, sandplain and residual) as well as areas of mining activity. This map comes with a grid spacing of 500 metres.Data is held in GDA decimal degrees.

This datasest was formally known as Regolith of WA - 500 metre grid (DMP-007)