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Zones and zonal variations in welded ash flows /

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Bibliographic Details
Main Author: Smith, Robert L. (Robert Leland), 1920- (Author)
Format: Government Document eBook
Language:English
Published: Washington : United States Department of the Interior, Geological Survey, 1960.
Series:Geological Survey professional paper ; 354-F.
Shorter contributions to general geology.
Subjects:
Volcanic ash, tuff, etc.
Ignimbrite.
Online Access:https://purl.fdlp.gov/GPO/gpo87027
Description
Item Description:Title from title screen (viewed September 30, 2014).
"A concept of zonation in ash flows based on degree of welding and type of crystallization."
Physical Description:1 online resource (16 unnumbered pages) : illustrations + 2 plates.
Bibliography:Includes bibliographical references (pages 158-159).