We’ve mentioned before that we are using the Big Map of North American geology, hanging in Reed Hall, as a way to demonstrate various geological ideas. Since the map is covered by a sheet of plexiglass, we can mark it up with dry-erase markers with annotations to show where various features can be found on the map. This time, however, we changed it up a bit.
This lesson, we focused on the extent of glaciers from the last Ice Age. And what better way to represent a sheet of ice than a large sheet of white paper? We have also continued to record the locations of large earthquakes that have struck this year.