Chapter 3: Geologic Structure and Landforms
Geologic interpretation of images begins with the identification of lineaments, “regional linear features caused by linear arrangement of regional morphological features such as streams, escarpments, and mountain ranges and tonal features that in many areas are the surface expressions of fractures or fault zones.”[i] The emphasis in this section is on geologic structures and landforms, both of which can be easily identified on air photographs and other images.
The sequence followed here is that often found in geomorphology books. Geologic structures and structurally controlled landforms are illustrated first, followed by images of mass wasting and of the results of the agents of erosion—running water, ground water, ice, wind and the sea. The meandering rivers of southern
3.93: Raised Strandlines, West Shore of Hudson Bay, South of Cape Churchill
The image shows part of the west
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
Figure 3.93: Raised Strandlines, West Shore of Hudson Bay, South of Cape Churchill
Google Earth 2005: Image 2006 Terra Metrics
Scale: 1:193,000 (approx.)
Location of Thompson Point: 58º 18'N, 92º 59'W
Map sheets: 1:250,000 54K Churchill
[i] Scott, op. cit. 1996, figure 4.2, 45.