Ash-flow tuffs: Their origin, geologic relations, and identification

Professional Paper 366
By:  and 

Links

Abstract

Pyroclastic materials, which are interpreted as having been deposited by flowage as a suspension of ash in volcanic gas, are becoming widely recognized as major geologic episodes. These may be unconsolidated, indurated by partial welding, or welded into a compact rock. Many students are working on these materials and the interest in them is so widespread that need for a coordinated treatise on them has developed. This report deals with the history of the concept of their origin; gives detailed descriptions of their character and mode of occurrence; gives criteria for their recognition; and considers their distribution and consolidation.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Ash-flow tuffs: Their origin, geologic relations, and identification
Series title Professional Paper
Series number 366
DOI 10.3133/pp366
Year Published 1961
Language English
Publisher United States Government Printing Office
Description vi, 80 p.