Click on the links below to view animations created specifically for Earth: Portrait of a Planet.
Animations require Macromedia's Flash Plug-in.

Cliff Retreat along the Coast

This animation illustrates the process by which undercutting by waves removes the support beneath an overhang. Eventually the overhang breaks off along joints, a rock fall occurs, and the cliff retreats.

Additional Resources

The abundance of geology-related websites speaks to the active and exciting nature of this field. In the space below we link to external websites that explore topics covered in this chapter.

These links are selected carefully and updated regularly; however, their contents may change over time. Please click here to report a bad or missing link.

» Search for specific topics » Browse the Link Library

	Huge Japanese Landslide is Caught on Video 8/10/2004 KATU-News Portland, Oregon
		Staff from the Japanese Ministry of Land captured this dramatic footage of a landscape in Japan's central Nara region (August 10, 2004).

	What is Soil Liquefaction? 10/14/2004 University of Washington
		This page explains when, where, why, and how shocks and vibrations can cause soil to become liquid and includes informative photos, animations and laboratory simulations.

	video and animations of tsunami activity 4/11/2005 University of Southern California Tsunami Research Center
		Provides a variety of animations and video clips showing tsunami damage related to earthquakes and landslides.