Set window back color, show msg, and OK button. The evidence is in rocks, which may seem lifeless but are really incredible storytellers. Geologists look for places where they can most easily and accurately interpret the earth's history. There is probably no more spectacular place to do this than the Grand Canyon in northern Arizona, United States. Each rock layer becomes a chapter in a book about the geologic history of northern Arizona.
Objectives Find out how scientists use rocks to unlock stories of the past.
Learn about different varieties of rock and the formation of each type. Discover how rocks can provide clues into past environmental conditions, vegetation, and wildlife. Inc. All rights reserved.