Climbing the crustal ladder: Magma storage-depth evolution during a volcanic flare-up.

ABSTRACT: Very large eruptions (>50 km³) and supereruptions (>450 km³) reveal Earth's capacity to produce and store enormous quantities (>1000 km³) of crystal-poor, eruptible magma in the shallow crust. We explore the interplay between crustal evolution and volcanism during a volcanic flare-up in the Taupo Volcanic Zone (TVZ, New Zealand) using a combination of quartz-feldspar-melt equilibration pressures and time scales of quartz crystallization. Over the course of the flare-up, crystallization depths became progressively shallower, showing the gradual conditioning of the crust. Yet, quartz crystallization times were invariably very short (<100 years), demonstrating that very large reservoirs of eruptible magma were transient crustal features. We conclude that the d

SUBMITTER: Gualda GAR 

PROVIDER: S-EPMC6179376 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature