By

D. A. Ponce
S. B. Kohrn
R. W. Saltus
J. B. Spielman
B. A. Chuchel
D. A. Ponce
S. B. Kohrn
R. W. Saltus
J. B. Spielman
B. A. Chuchel

Publication date

January 1984

Abstract

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes and does not imply endorsement by the U.S. Geological Survey. Copies of this Open-File Report may be purchased fro