Jessica F. Larsen

TL;DR: The Tholeiitic Index (THI) as mentioned in this paper is a quantitative measure for the way in which a magma evolves, which measures the enrichment in Fe during the evolution from basalts to andesites.

TL;DR: In this paper, the authors examined groundmass textures of samples erupted over a range of volcanic activity to investigate the controls on the variability of the variability in the groundmass texture of volcanic groundmass.

TL;DR: This article measured the water distribution around vesicles in experimentally-vesiculated samples, with high spatial resolution, indicating that water is resorbed from bubbles during cooling; textural evidence suggests that resorption occurs largely before the melt solidifies.

TL;DR: In the late morning of 12 July 2008, the Alaska Volcano Observatory (AVO) received an unexpected call from the U.S. Coast Guard, reporting an explosive volcanic eruption in the central Aleutians in the vicinity of Okmok volcano, a relatively young (∼2000-year old) caldera as mentioned in this paper.

TL;DR: In this paper, the authors interpret that the 2009 Redoubt volcano erupted from depth during 8 or more months prior to the first eruption, but that the magma stalled and accumulated in the upper crust where its phenocryst rim and melt compositions were established.