Eocene rocks in northeast Washington--radiometric ages and correlation : the genetic relations among numerous patches of volcanic rocks /
Pearson, Robert Carl,1926-
Obradovich, John D.
Geological Survey (U.S.)
United States.Government Printing Office.
Washington : U.S. Govt. Print. Off.,
1977.
Includes bibliographical references (p. 32-34).
Geology, Stratigraphic
Potassium-argon dating.
Stratigraphic correlation
Stratigraphic correlation
Geology
Geology