Divisions of Geologic Time – Major Chronostratigraphic and Geoschronoloc Units is a fact sheet showing the major chronostratigraphic (position) and geochronologic (time) units as determined by the members of the Geologic Names Committee of the U.S. Geological Survey. The colored diagram on page 2 is a handy reference for use with many earth science learning activities.
Earth and Space Science
ACTIVITY MODULE
Seventh grade, Eighth grade