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

The advent of polarized light microscopy in the middle of the 19th century allowed
mineralogists and petrologists interested in igneous rocks to recognize the widespread …

The solubility of H2O in silicate melt drops substantially with decreasing pressure, so that a
magma initially containing several weight percent H2O in a crustal magma reservoir is left …

We review our understanding of the exsolved volatile phase co-existing with magmas during
pre-eruptive storage at the pressures and temperatures corresponding to crustal magma …

The textures of minerals in volcanic and plutonic rocks testify to a complexity of processes in
their formation that is at odds with simple geochemical models of igneous differentiation …

Uranium-lead ages and trace element compositions of zircon from a series of shallow
porphyry intrusions document the temporal, chemical, and thermal magmatic evolution of …

COVER: Katmai caldera and the Valley of Ten Thousand Smokes. During the 60-hour
eruptive sequence of 6–8 June 1912, 13.5 km3 of rhyolite, dacite, and andesite magma was …

Open-system processes have a large capacity to modify magma compositions during
differentiation. Obtaining the rates of such processes is essential to understanding and …

The mid-Holocene eruptive products of Nevado de Longaví volcano (36· 2° S, Chile) are the
only reported occurrence of adakitic volcanic rocks in the Quaternary Andean Southern …

Diffusional smoothing of Fe–Mg compositional gradients in clinopyroxene crystals from the
1944 eruption of Vesuvius is used to determine the preeruption residence times of crystals at …