| Popis: |
The Knox Lake area is of moderate relief characterized by extensive till blankets in the lowlands, and till veneers and bedrock outcrops at higher elevations. The region was differentially eroded by the Laurentide Ice Sheet throughout Wisconsin time, largely influenced by the migration of the Ancestral Labrador ice divide. Phases of radial ice flow from the migrating ice divide imparted discordant erosional ice-flow landforms and ice-flow indicators on the landscape. Terrain at higher elevations has been scoured by meltwaters from late-phase ablation of the ice sheet during deglaciation, which fed into an esker network trending from northwest to southeast across the map area. Extensive lowland fens, glaciolacustrine strandlines, and littoral sediments that surround isolated streamlined till units in the central portion of the map, mark the former northern extent of inundation of a large, shallow glacial lake (glacial Lake Low). |
