Granular physics has made considerable progress during the past decades in the
understanding of static and dynamic properties of large ensembles of interacting …

Ignimbrites are vast, landscape-modifying deposits composed mainly of pumice fragments
and ash. They derive from the most. hazardous types of explosive volcanic eruptions and …

Large‐volume ash flow eruptions and associated caldera collapses provide a direct link with
subvolcanic granitic plutons of batholithic dimensions. The eruptive history, structural …

We propose a mechanism by which massive ignimbrite and layered ignimbrite sequences—
the latter liable to have been previously interpreted as multiple flow units-form by …

Abstract The trachytic Campanian Ignimbrite, originally exposed over a 30,000-km 2 area
around Naples, Italy, is the product of a highly energetic, gas-rich eruption. The deposit lies …

The Jemez volcanic field straddles the western margin of the Rio Grande rift where the rift is
intersected by the Jemez lineament in north central New Mexico. The field has a record of …

Peralkaline welded tuffs from the islands of Gran Canaria, Canary Islands, and Pantelleria,
Italy, show abundant evidence for post-depositional flow. It is demonstrated that …

Welding of pyroclastic deposits involves flattening of glassy pyroclasts under a compactional
load at temperatures above the glass transition temperature. Progressive welding is …

The Toba depression in north central Sumatra is a complex of several overlap** calderas
resulting from three major ignimbrite‐forming eruptions. Within the depression, the upland …

Abstract The Miocene Grey's Landing ignimbrite reaches 70 m thick and covers at least 400
km2 in the central region of the Snake River Plain. It shows particularly intense welding and …