Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems

Figures & data

Figure 1. Location and topography of the study area. Locations of the landform examples provided in subsequent figures are indicated by boxes and the numbers refer to the associated figure number. Lakes greater than 100 km² are shown with blue outlines.

Figure 2. Extent of previous surficial geology maps at various scales in NTS zone 66.

Table 1. Features mapped in previous studies.

NTS zone	Reference	Scale	Lineations (including flutings & drumlins	Crag and tails (including roches moutonnées)	Striae	Ribbed moraine	De Geer moraine	Hummocky moraine	Esker	Meltwater channel	Marine limit	Lacustrine limit	Shorelines (including beaches)	Moraine ridge	Lateral moraine	Delta	Ice-contact delta	Ice-contact face	Glaciofluvial terrace scarp
066A	Aylsworth et al. (1990)	1:125,000	✓	✓	✓	✓	✓	✓	✓	✓	✓		✓	✓
066A	McMartin et al. (2005)	1:250,000	✓	✓	✓	✓		✓	✓					✓
066A south	McMartin et al. (2008)	1:100,000	✓	✓	✓	✓		✓		✓	✓		✓
066B	Aylsworth (1990)	1:125,000	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
066C	Aylsworth and Clarke (1989)	1:250,000	✓	✓	✓	✓	✓	✓	✓	✓	✓		✓	✓
066E	St-Onge and Kerr (2013)	1:125,000	✓	✓	✓				✓				✓	✓				✓	✓
066G north	St-Onge and Kerr (2015)	1:125,000	✓	✓	✓				✓	✓			✓	✓
066I	Thomas (1981a)	1:250,000	✓	✓	✓				✓	✓	✓		✓	✓	✓	✓	✓	✓
066H	Thomas (1981b)	1:250,000	✓	✓	✓				✓	✓	✓		✓	✓	✓	✓	✓	✓
066J south	St-Onge and Kerr (2014b)	1:125,000	✓	✓	✓				✓	✓	✓		✓	✓
066L	St-Onge and Kerr (2014a)	1:125,000	✓	✓	✓				✓	✓			✓	✓				✓	✓
066C,D,E,F	Craig (1964)	1:506,880	✓	✓	✓				✓	✓			✓	✓		✓
066O,P	Helie (1984)	1:250,000	✓	✓	✓		✓		✓				✓	✓		✓
066I,J,K,N,O,P	Craig (1961)	1:1,013,760	✓	✓	✓				✓		✓			✓
066 (all)	Aylsworth and Shilts (1989a)	1:1,000,000	✓	✓		✓		✓	✓					✓

Figure 3. Glacial lineations: drumlins shown in (A) CDED and (B) 4,3,2 R,G,B Landsat ETM+ image; and mega-scale glacial lineations shown in (C) CDED and (D) pan-sharpened 4,3,2 R,G,B Landsat ETM+ image. Locations are given in Figure 1.

Figure 4. Ribbed terrain shown in (A) CDED and (B) Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1.

Figure 5. A segment of the MacAlpine moraine (Dyke & Prest, 1987) shown in (A) CDED and (B) Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1.

Figure 6. Eskers shown in (A) CDED and (B) Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1.

Figure 7. Meltwater channels seen in (A) CDED and (B) Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1.

Figure 8. Ice-contact outwash fans/deltas seen in (A) CDED and (B) Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1.

Figure 9. Glaciofluvial deposits. (A) Tracts of glaciofluvial deposits (light colours) between Aberdeen and Garry Lakes shown in Landsat ETM+ (R,G,B 4,3,2) imagery. Location is given in Figure 1. (B) Close-up of the box in A with outline of mapping. Landsat image is pan-sharpened. (C) DEM showing the same area as B. Note the esker in close association with the glaciofluvial deposits.

Figure 10. Abandoned lake shorelines (indicated by black arrows) shown in Landsat ETM+ (R,G,B 7,5,2) imagery. Location is given in Figure 1.

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