This GIS dataset depicts the surficial geology of the Slims Creek area (NTS 84F/SW) (GIS data, line features). The data were created in geodatabase format and output for public distribution in shapefile format.
These data comprise the line features of Alberta Geological Survey Map 581, Surficial Geology of the Slims Creek Area (NTS 84F/SW).
Our processes included:
1. making a LiDAR imagery mosaic for NTS 84F/SW supplemented by the Shuttle Radar Topography Mission (SRTM) digital elevation model (DEM) where LiDAR data were unavailable;
2. relief shading the LiDAR and SRTM DEMs;
3. clipping Landsat-8 scenes LT50450202007193PAC01 and LT50460202007152PAC01 (courtesy of the U.S. Geological Survey) to the map area boundary;
4. performing image classification on the Landsat data, collecting training objects, and classifying peatlands using Landsat spectral properties and LiDAR topographic indices;
5. delineating non-peatland polygons from object-based analysis of a slope image derived from the LiDAR imagery
6. augmenting the classified landforms with digitization of polygons and line features across the LiDAR image of NTS 84F/SW using ArcGIS;
7. labelling spatial features;
8. checking the quality of the digital file; and
9. proofreading the text.