Phenocryst compositions of late ash-flow tuffs from the central San Juan caldera cluster : results from Creede drill-hole samples and implications for regional stratigraphy /

Bibliographic Details
Main Author:	Lipman, Peter W.
Corporate Authors:	Geological Survey (U.S.), U.S. Continental Scientific Drilling Program
Other Authors:	Weston, Patricia E., Bethke, Philip Martin, 1930-
Format:	Government Document Microform Book
Language:	English
Published:	[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2001.
Series:	Preliminary scientific results of the Creede caldera Continental Scientific Drilling Program. U.S. Geological Survey open-file report ; 94-260-B.
Subjects:	Volcanic ash, tuff, etc. > Colorado > Creede Region. Phenocrysts > Colorado > Creede Region. Boring > Colorado > Creede Region. Creede Formation (Colo.)