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Manitoba from the Air
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Description
Raised Strandlines, West Shore of Hudson Bay, South of Cape Churchill

The image shows part of the west shore of Hudson Bay 1 with Thompson Point 2 near the south edge. Uplift since the end of the Ice Age has resulted in a series of strandlines indicating former shore positions. On this image they range up to about 100 feet (30.5 m) above sea level and appear as light-toned linear, north/south trending features 3. Those in the west 4 are higher and older than those further east 5. The light tone indicates sand and gravel at the surface. Near the present shoreline, the strandlines are less distinct 6 and are probably covered by tundra vegetation as this area lies within the shrub-tundra vegetation zone[i].

Inland the land is covered by shrub tundra 7 and there are several large lakes—dark blue in colour and therefore probably deep and without suspended sediment. The largest are Napper Lake 8, Hannah Lake 9, and Mary Lake 10. Light-blue lakes, probably shallower and with suspended sediment, can be seen behind 11 and between 12 the strandlines. The course of the White Whale River 13, which drains through a dark blue lake 14 and eventually to Hudson Bay can be observed in the north.

Notes

[i] Scott, op. cit. 1996, figure 4.2, 45.

Figure 3.93

Raised Strandlines, West Shore of Hudson Bay, South of Cape Churchill