机译:NORTH AMERICAN COMMISSION ON STRATIGRAPHIC NOMENCLATURE Note 71 - Application for addition of chemostratigraphic units to the North American Stratigraphic Code: A case for formalizing chemostratigraphic units
Precision Stratigraphy Associates, Cleveland OK 74020-5037;
Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013;
Department of Environment, Geology, and Natural Resources, Ball State University, Muncie, IN 47306-2554Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada;
North American Stratigraphic Code; past seventy years; correlation practices;