Divisions of geologic time - major chronostratigraphic and geochronologic units
Author(s): , and U.S. Geological Survey Geologic Names Committee
Publication Year: 2007
Bibliographic Reference:
U.S. Geological Survey Geologic Names Committee, 2007, Divisions of geologic time - Major chronostratigraphic and geochronologic units: U.S. Geological Survey Fact Sheet 2007-3015, 2 p., available at http://pubs.usgs.gov/fs/2007/3015/ .
Citation Updated: 2008-03-28 17:53:02