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
3.56: Drumlins and Eskers in Northern Manitoba
Much of northern
The dark-toned triangular shaped area in the southeast corner 10 is a technical defect.
Figure 3.56: Drumlins and Eskers in Northern Manitoba
Vertical air photograph: A15707-12
Flight height: 30,000 feet a.s.l.; lens focal length: 152.56 mm
Scale: 1:60,000 (approx.)
Date: July 23, 1957
Location: 59°53'26"N, 100°24'53"W
Map sheets: 1:250,000 64N