Laboratory Manual for Introductory Geology 4e

EXERCISE 15.5
Drumlins
Name:
Course:
Section:
Date:
The DEM of the Weedsport, New York, area below shows a large swarm of drumlins. FIGURE 15.9 is a topographic map
of the area outlined in white in the DEM.
(a) Describe the topography shown in these two figures.
(b) Using a colored pencil, trace the long axis of one of the numbered drumlins in Figure 15.9. What is its orientation
(using azimuth notation)?
(c) Do the same for the other numbered drumlins. What do these axes suggest about the direction in which the
continental glacier flowed across this area? Indicate that direction with an arrow.
(d) The direction of ice flow indicated by a drumlin is from the
side.
side of the drumlin toward the
DEM of the Weedsport, New York,
7.59 quadrangle, showing the southern
end of the Ontario–New York State
drumlin field (area outlined by white
rectangle is shown in Fig. 15.9).
396 CHAPTER 15 GLACIAL LANDSCAPES