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
3.11: The Crawford Creek Embayment in the Riding Mountain Escarpment
Where it trends north/south or north-northwest/south-southeast (south of the
Nearly all the area is covered by mixed woodland with more uniform dark-toned patches 10 representing stands of coniferous trees.
Figure 3.11: The Crawford Creek Embayment in the Riding Mountain Escarpment
Vertical air photograph: A15229-20
Flight height: 17,140 feet a.s.l.; lens focal length: 152.4 mm
Scale: 1:34,000 (approx.)
Date: June 4, 1956
Location: Township 22 and 23; Range 18 and 19WI
Map sheets: 1:250,000 62J Neepawa
1:50,000 62J/13 Laurier
1:125,000 MCR 207 Riding Mountain National Park