Calderas of the San Juan volcanic field, southwestern Colorado /

Eighteen major ash-flow tuff sheets were deposited and perhaps as many related calderas developed during emplacement of an underlying shallow batholith in late Oligocene time.

Bibliographic Details
Main Authors: Steven, Thomas A. (Thomas August), 1917-2013, Lipman, Peter W. (Author)
Corporate Author: Geological Survey (U.S.)
Format: Government Document Book
Language:English
Series:Geological Survey professional paper ; 958.
Subjects:
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