Compilation of revised ages of volcanic units in the San Juan Mountains, Colorado
Subtitle: recalculated K-Ar age determinations using IUGS constants
By: by Ken Hon and Harald H. Mehnert.
Contributors: Mehnert, Harald H.; Geological Survey (U.S.)
Series: Open-file report -- 83-668.; Open-file report (Geological Survey (U.S.)) -- 83-668.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1983
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Geological time.; Potassium-argon dating.
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1983?]. 1 microfiche ; 11 x 15 cm.

Bibliography: p. 12-13.