Zones and zonal variations in welded ash flows
Author:
- R.L. SmithRSR.L. Smith
Open Access
- 1 January 1960
- report
- Published by US Geological Survey
- p. 149-159
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.Keywords
This publication has 1 reference indexed in Scilit:
- Welded tuff in eastern CaliforniaGeological Society of America Bulletin, 1938