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  • The layer defines the elevation of the top surface of the basement geological unit as a raster ArcGIS grid. The layer has been derived from the 3D Eastern Canterbury Geological Model built using Leapfrog Geo software.

  • The layer defines the thickness of the basement geological unit as a raster ArcGIS grid. The layer has been derived from the 3D Eastern Canterbury Geological Model built using Leapfrog Geo software.

  • The layer defines the elevation of the top surface of the basement geological unit as a contour ArcGIS shapefile. The layer has been derived from the 3D Eastern Canterbury Geological Model built using Leapfrog Geo software.

  • Distribution of pre-Cenozoic basement rocks of New Zealand