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
3.44: Spring Sapping Near Wigle Springs on the Assiniboine River Below Brandon
In this area the
The items in a compound 12 are probably associated with Canadian Forces Base (CFB) Shilo just off the photo to the east. Trails across the area are light-toned 13 because vegetation has been removed exposing the underlying sand.
Figure 3.44: Spring Sapping Near Wigle Springs on the Assiniboine River Below Brandon
Vertical air photograph
Flight height: 11,225 feet a.s.l.; lens focal length: 152.45 mm
Date: August 10, 1965
Scale: 1:20,500 (approx.)
Location: Township 9; Ranges 16 and 17 WI
Map sheets: 1:250,000 62G Brandon
1:50,000 62G/12 Wawanesa