Vitreous materials are quite routinely found in natural settings. Most of them are
aluminosilicates, which often occur in large deposits. Considering the geological formations …

Outstanding Cenozoic ash-fall deposits have been recognized in Andean foreland basins in
NW Argentina. The purpose of this contribution is to review their stratigraphic, petrographic …

Magma fragmentation—the process by which relatively slow-moving magma transforms into
a violent gas flow carrying fragments of magma—is the defining feature of explosive …

Understanding the physicochemical conditions extant and mechanisms operative during
explosive volcanism is essential for reliable forecasting and mitigation of volcanic events …

Abstract The Miocene “Corte Blanco Tuff” rhyolite deposit is the product of a large volume
and high intensity Plinian eruption from the solitary and monogenetic Ramadas Volcanic …

The stratigraphic and sedimentological characteristics of the Cenozoic deposits are very
important aspects to investigate the tecto-sedimentary evolution of the Andean foreland …

Abstract The Ramadas Volcanic Center on the eastern margin of the central Andean Puna
plateau along the Olacapato-El Toro lineament in Argentina erupted a rare strongly …

The Coyaguayma ignimbrite is a strongly peraluminous (SP), sillimanite, garnet-bearing
silicic rhyolite which erupted in the northern Puna segment of the central Andean plateau in …

We report on the newly discovered almandine garnet phenocrysts in rhyolitic ignimbrites
(Sukhda Tuff) in the Precambrian Churtela Shale Formation of the Chhattisgarh Supergroup …

A thick sequence of bedded pyroclastic deposits, comprised largely of crystal poor, partially
flow-banded perlite fragments defines the remains of a tuff ring around the eastern margin of …