Understanding Our Planet Through Chemistry
This U.S.Geological Survey site shows how chemists and geologists use analytical chemistry to: determine the age of the Earth; show an extraterrestrial body collided with the Earth; predict volcanic eruptions; observe atmospheric change over millions of years; and document damage by acid rain and pollution of the Earth's surface.
Compiled by Joseph E. Taggart, Jr.
Edited by Carole A. Bates and Sonja K. Runberg
Graphics and photos by Richard P. Walker, Shawn T. Smith, and Steven M. Smith
Composition by Margo L. Johnson