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P4−s−p0−sAr/−p3−s−p9−sAr Ages of Some Challis Volcanic Group Rocks and the Initiation of Tertiary Sedimentary Basins in Southwestern Montana

Geological Survey (É.-U.)John W. M'GonigleG. Brent Dalrymple

出版	U.S. Government Printing Office, 1996
URL	http://books.google.com.hk/books?id=ykYTzwEACAAJ&hl=&source=gbs_api

註釋

A summary of p4sp0sAr/p3sp9s age analyses of eighteen samples of volcanic rocks from the Challis Volcanis Group and a summary of basin stratigraphy in Southwestern Montana.