USGS

Artist's cross section illustrating the main types of plate boundaries (see text); East African Rift Zone is a good example of a continental rift zone. (Cross section by José F. Vigil from This Dynamic Planet -- a wall map produced jointly by the U.S. Geological Survey, the Smithsonian Institution, and the U.S. Naval Research Laboratory.)

"Understanding plate motions"

URL: http://pubs.usgs.gov/publications/text/Vigil.html
Last updated: 05.05.99
Contact: jmwatson@usgs.gov