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Expected Responses:
- The final map should look like Figure 37. At this stage, just the outline of the coast should be present.
- Story Head is a drumlin made up of glacial till. In the video and photo 36A, we can clearly see that, on the side being attacked by the sea, there is a steep cliff. The glacial till is not cemented like a rock, but is quite crumbly and often muddy and breaks up into smaller pieces that the waves can easily wash away.
and
- The thin strips of land on either side of Story Head are beaches made up of loose sand and gravel. They are low features, with an average height of only 3 to 4 metres above mean sea level. The beach between Story Head and the mainland is known as a barrier beach because it forms a barrier to movement of water on either side. The island beaches to the north of Story Head are known as barrier islands for similar reasons.
You have just created a geological map of the region around Harris Misener's farm. But the farm
is nowhere to be seen because it eroded away before the aerial photograph was taken. In post-glacial change Exercise 7, we will look at some older photographs taken when the island was still there.
Figure 37.
Map, with legend, showing the interpretation of the aerial photograph in Fig. 35.
(After Carter, R.W.G., Orford, J.D., Forbes, D.L., and Taylor, R.B., 1990, p117)
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