This is a set of four conceptual movies that show the growth and shrinking of the Canadian ice sheets during recent ice ages and the affects of these fluctuations upon coastline locations. They go from a global view, to a continental view, and then, finally, to a regional view showing approximate coastline migrations across the continental shelves of the western Atlantic.

The four are intended to be used all together, in sequence.

To view these movies, click on their images.

Download: Set of four ice and coastlines movies (17 MB)

Drawn and animated in Photoshop and Morph by John Iwerks and Tanya Atwater.

Comments on this and all of the materials offered on this site are welcomed: atwater@geol.ucsb.edu