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Title: Climbing the crustal ladder: Magma storage-depth evolution during a volcanic flare-up
Very large eruptions (>50 km 3 ) and supereruptions (>450 km 3 ) reveal Earth’s capacity to produce and store enormous quantities (>1000 km 3 ) 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 dynamic nature of the TVZ crust favored magma eruption over storage. Episodic tapping of eruptible magmas likely prevented a supereruption. Instead, multiple very large bodies of eruptible magma were assembled and erupted in decadal time scales.  more » « less
Award ID(s):
1830122
NSF-PAR ID:
10189534
Author(s) / Creator(s):
; ; ; ; ; ; ;
Date Published:
Journal Name:
Science Advances
Volume:
4
Issue:
10
ISSN:
2375-2548
Page Range / eLocation ID:
eaap7567
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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