Compilation of drillholes for mineral exploration and Quaternary studies in the Province of Saskatchewan, Canada. This dataset is compilation of uranium drillholes prior to 2007, and since that time has expanded to include metallic and industrial mineral exploration drillholes and surficial sedimentology drillholes. This is an ongoing compilation whereby recent drillholes that become publically available are added. In addition, improvements are frequently made to more historic drillholes with spurious information. The dataset is not an exhaustive list of drillholes in Saskatchewan. **Please Note – All published Saskatchewan Geological Survey datasets, including those available through the Saskatchewan Mining and Petroleum GeoAtlas, are sourced from the Enterprise GIS Data Warehouse.  They are therefore identical and share the same refresh schedule.

The map displays bedrock formations at or near the surface of the land, on the sea floor above the continental crust that forms the Canadian landmass, and oceanic crust surrounding the landmass. The bedrock units are grouped and coloured according to geological age and composition. The colours of offshore units and oceanic crust are paler and more generalized than those on land, although the constituent units offshore are still easily discernible from their dashed boundaries. This colour design, coupled with the use of a white buffer zone at the coast allows the coastline of Canada to be readily distinguished and still show the grand geological architecture of the Canadian landmass. The map also shows major faults that have disrupted the Earth's crust, onshore and offshore, and a variety of special geological features such as kimberlite pipes, which locally contain diamonds, impact structures suspected to have been caused by meteorites, and extinct and active spreading centres in the surrounding oceans.