Types of Rocks and Geologic Time

-Mrs. Steel-

Atlas of Igneous and Metamorphic Rocks, Minerals & Textures
This web page was constructed to aid undergraduate geology students at UNC.
http://www.geosci.unc.edu/Petunia/IgMetAtlas/mainmenu.html

 Igneous, Sedimentary, Metamorphic Rocks “Introduction to Petrology”
University of British Columbia
http://www.science.ubc.ca/~geol202/petrology/rock.html

Major Divisions of Geologic Time with brief explanations of
Cenozoic Era, Mesozoic Era, Paleozoic Era, etc.
http://pubs.usgs.gov/gip/geotime/divisions.html

Relative Time Scale
http://pubs.usgs.gov/gip/geotime/relative.html

Examples of Index Fossils keyed to the Relative Time Scale
http://pubs.usgs.gov/gip/geotime/fossils.html

Age of the Earth
http://pubs.usgs.gov/gip/geotime/age.html