The data contains areas of duricrust; ie regolith material indurated by a cement, or the cement only, occurring at or near the surface, or as a layer in the upper part of the regolith. The cement may be, e.g., siliceous, ferruginous, aluminous, gypseous, manganiferous, calcareous, dolomitic, salty or a combination of these.
The dataset is part of the geological mapping dataset, which includes datasets representing geological rock units and boundaries, structural lines, miscellaneous lines and points, miscellaneous polygons, metamorphism, and placer deposits.
The data have been collected by the Geological Survey of Victoria. Data have typically been captured in projects covering 1:100,000 mapsheets, and have typically been recorded in the field by hand at 1:25,000 then prepared for hard copy printing at 1:50,000.
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