Professor: Allan Ashworth, Room 130, Ph. 231-7919
Homepage: http://www.ndsu.edu/pubweb/~ashworth/
Textbook: Prothero, D. R. and Schwab, F. 2004, Sedimentary Geology. W.H. Freeman Company.
International Stratigraphic Chart (Geological Time Scale)
International Commission on Stratigraphy
North American Stratigraphic Code