The Earth's history is punctuated by large explosive eruptions that eject large quantities of
magma and silicate rock fragments into the atmosphere. These tephra particles can …

Despite its relatively minor abundance in magmas (compared with H2O and CO2), sulfur
degassing from volcanoes is of tremendous significance. It can exert substantial influence …

The origin of tholeiitic (TH) versus calc-alkaline (CA) magmatic trends has long been
debated. Part of the problem stems from the lack of a quantitative measure for the way in …

The transport, degassing and atmospheric release of halogens from active volcanism on
Earth have been the focus of increasing interest over the last few decades, and have …

Abstract Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since
2014, causing airport and school closures in the capital city of San José. Whether or not new …

The reactions occurring between gases/aerosols and silicate ash particles in volcanic
eruption plumes remain poorly understood, despite the fact that they are at the origin of a …

We investigate the relationship between sulfur and oxygen fugacity at Erta Ale and Masaya
volcanoes. Oxygen fugacity was assessed utilizing Fe3+/∑ Fe and major element …

Subduction zone systems are central to a multitude of processes from the evolution of the
continental crust to the concentration of metals into economically viable deposits. The …

Volcanic ash presents a widespread and common hazard during and after eruptions.
Complex interactions between solid ash surfaces and volcanic gases lead to the formation …

The May 2008 eruption of Chaitén volcano, Chile, provided a rare opportunity to measure
the long-range transport of volcanic emissions and characteristics of a widely-dispersed …