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Browsing by Author "Andrews, Benjamin J."

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Dispersal and air entrainment in unconfined dilute pyroclastic density currents

Andrews, Benjamin J. (2014)

Unconfined scaled laboratory experiments show that 3D structures control the behavior of dilute pyroclastic density currents (PDCs) during and after liftoff. Experiments comprise heated and ambient temperature 20 mu m talc ...
Explosive dome eruptions modulated by periodic gas-driven inflation

Johnson, Jeffrey B.; Lyons, J. J.; Andrews, Benjamin J.; Lees, J. M. (2014)

Volcan Santiaguito (Guatemala) breathes with extraordinary regularity as the edifice's conduit system accumulates free gas, which periodically vents to the atmosphere. Periodic pressurization controls explosion timing, ...
Magmatic storage conditions, decompression rate, and incipient caldera collapse of the 1902 eruption of Santa Maria Volcano, Guatemala

Andrews, Benjamin J. (2014)

Phase equilibria experiments and analysis of natural pumice and phenocryst compositions indicate the 1902 Santa Maria dacite was stored at ~ 140-170 MPa and 840-850 °C prior to eruption. H2O-saturated, cold-seal experiments ...
Rapid Crystallization of Plagioclase Phenocrysts in Silicic Melts during Fluid-saturated Ascent: Phase Equilibrium and Decompression Experiments

Waters, Laura E.; Andrews, Benjamin J.; Lange, Rebecca A. (2015)

Three crystal-poor obsidian samples (one dacite, 67 wt % SiO2; two rhyolites, 73 and 75 wt % SiO2), which erupted effusively from monogenetic vents, contain sparse (<2%) plagioclase phenocrysts that span a remarkably ...
Thermal and rheological controls on the formation of mafic enclaves or banded pumice

Andrews, Benjamin J.; Manga, Michael (2014)

Browsing by Author "Andrews, Benjamin J."

Browsing by Author "Andrews, Benjamin J."

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