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Table of Contents
Foreword
Preface
Glossary

Chapter 3: Geologic Structure and Landforms

3.100: Stabilized Parabolic Dunes on the Assiniboine Delta South of Lavenham

This area is close to the lakeward edge of the Assiniboine delta and was probably uncovered by water at an early stage. Five well-developed parabolic dunes can be seen 1. Parabolic dunes have arms that point upwind—to the northwest in this case—and steep, rounded leeside slopes to the southeast. Grasses on the windward slopes 2 and trees on the leeward slopes 3 have long since stabilized the dunes.

Away from the steeper slopes the vegetation is mainly deciduous woodland 4—identified by rounded shadow shapes—with low bushes between 5. Some land has been cleared for agriculture; the sandy nature of the soils is indicated by the mottled tones in the fields 6. The Assiniboine River 7 flows to the east across the southeast corner with riverine gallery forest along its banks 8. Meander scrolls can be seen in the agricultural land south of the river 9.

A gravel road 10 crosses the south, and paths can be seen in the woodland, several congregating at one point 11 suggesting that something is either assembled at or distributed from this point. The cut line 12 marks a section boundary.

Figure 3.100: Stabilized Parabolic Dunes on the Assiniboine Delta South of Lavenham

Figure 3.100: Stabilized Parabolic Dunes on the Assiniboine Delta South of Lavenham

Figure 3.100

Vertical air photograph: A16574-61

Flight height: 9,000 feet a.s.l.; lens focal length: 152.34 mm

Date: June 19, 1959

Scale 1:15,400 (approx.)

Location: Township 9; Range 10 WI

Map sheets: 1:250,000 62G Brandon 

1:50,000 62G/10 Treherne