Zones and zonal variations in welded ash flows
January 1, 1960
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.
Citation Information
| Publication Year | 1960 |
|---|---|
| Title | Zones and zonal variations in welded ash flows |
| DOI | 10.3133/pp354F |
| Authors | R. L. Smith |
| Publication Type | Report |
| Publication Subtype | USGS Numbered Series |
| Series Title | Professional Paper |
| Series Number | 354 |
| Index ID | pp354F |
| Record Source | USGS Publications Warehouse |