We consider the current state of our understanding of the rheology of two-phase magmas,
that is suspensions of either bubbles or crystals in a viscous silicate melt. The discussion is …

Large caldera-forming eruptions have long been a focus of both petrological and
volcanological studies; petrologists have used the eruptive products to probe conditions of …

Languages, like genes, provide vital clues about human history,. The origin of the Indo-
European language family is “the most intensively studied, yet still most recalcitrant, problem …

Vesicles in volcanic rocks are frozen records of degassing processes in magmas. For this
reason, their sizes, spatial arrangements, numbers and shapes can be linked to physical …

Processes involved in the development of igneous and metamorphic rocks involve some
combination of crystal growth, solution, movement and deformation, which is expressed as …

Explosive volcanic eruptions constitute a major class of natural hazard with potentially
profound economic and societal consequences. Although such eruptions cannot be …

The fragmentation of magma, containing abundant gas bubbles, is thought to be the defining
characteristic of explosive eruptions,,. When viscous stresses associated with the growth of …

Permeability of the edifice is one of the key parameters governing eruptive style, magnitude,
and frequency of active stratovolcanoes. This study presents a suite of density and …

In this study, optimization of autogenous shrinkage and microstructure for Ultra-High
Performance Concrete (UHPC) based on appropriate application of porous pumice is …

We synthesize field and experimental data to evaluate relationships between the textures
and sizes of pyroclasts and the processes that shape them, with emphasis on the role of …