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Zones and zonal variations in welded ash flows

Professional Paper 354-F

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Abstract

Welded tuffs are recognized as special parts of ash flows, other pyroclastic flows, or, more rarely, air-fall deposits. Ash flows may be emplaced at any temperature below a maximum eruption temperature. Those emplaced above a minimum welding temperature may show any and all degrees of welding and crystallization. 

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Zones and zonal variations in welded ash flows
Series title:
Professional Paper
Series number:
354
Chapter:
F
Year Published:
1960
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Washington, D.C.
Description:
Report: 11 p.; 2 Plates: 16.55 x 10.82 inches
First page:
149
Last page:
159
Online Only (Y/N):
N
Additional Online Files (Y/N):
N