Results 31 to 40 of about 1,472 (257)
Crystal Shape Control on the Repacking and Jamming of Crystal‐Rich Mushes
Geophysical Research Letters, 2022 AbstractThe rheology of crustal mushes is a crucial parameter controlling melt segregation and magma flow. However, the relations between mush dynamics and crystal size and shape distribution remain poorly understood because of the complexity of melt‐crystal and crystal‐crystal interactions.
Susana Hoyos +3 more
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Geochemistry, Geophysics, Geosystems, 2023 Giant volcanic eruptions have the potential to overturn civilizations. Yet, the driving mechanism and timescale over which batholithic magma reservoirs transition from non‐eruptible crystal mush to mobile melt‐dominated stages and our capacity to detect ...
G. Weber, J. Blundy, D. Bevan
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Progressive underplating of mafic material at mid-crustal depth beneath Ischia volcano, Italy
Communications Earth & Environment, 2023 The destructive (Mw 3.9) earthquake of 21 August 2017 re-opened the question on where magma resides at the Ischia island volcano. The peculiar complexity of the seismic source initiated the debate on the involvement of fluid-related processes, but the ...
Irene Bianchi +3 more
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Time scales of crystal mixing in magma mushes [PDF]
Geophysical Research Letters, 2016 AbstractMagma mixing is widely recognized as a means of producing compositional diversity and preconditioning magmas for eruption. However, the processes and associated time scales that produce the commonly observed expressions of magma mixing are poorly understood, especially under crystal‐rich conditions.
Schleicher, Jillian M. +3 more
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A Crystal Mush Perspective Explains Magma Variability at La Fossa Volcano (Vulcano, Italy) [PDF]
, 2021 The eruptive products of the last 1000 years at La Fossa volcano on the island of Vulcano (Italy) are characterized by abrupt changes of chemical composition that span from latite to rhyolite.
Anna Gioncada +3 more
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Frontiers in Earth Science, 2021 The Aso-4 caldera-forming event (86.4 ± 1.1 ka, VEI-8) is the second largest volcanic eruption Earth experienced in the past 100 ka. The ignimbrite sheets produced during this event are some of the first ever described compositionally zoned pyroclastic ...
Franziska Keller +3 more
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The permeability of magma mush [PDF]
, 2023 Models for the evolution of magma mush zones are of fundamental importance for understanding magma storage, differentiation in the crust, and melt extraction processes that prime eruptions.
BRETAGNE, ELOISE,MARIE
core
Interfacial growth morphologies in dense eutectic crystal mushes
IMA Journal of Applied Mathematics, 2023 Abstract We consider the interfacial growth morphologies of crystals growing in contact in crystal mushes, with a specific application to those formed by the solidification of basaltic magma. We focus on the particular case of an augite (pyroxene) crystal growing between two plagioclase crystals.
Fowler, Andrew, Holness, Marian B.
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Time scales of open-system processes in a complex and heterogeneous mush-dominated plumbing system
, 2022 The architecture of a mush-dominated plumbing system in active volcanic areas conditions the magma pathways feeding eruptions. Open-system processes along these pathways and the associated time scales are directly related to monitoring data and eruptive
Marani, Michael P. +6 more
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Frontiers in Earth Science, 2020 The 2012 Havre eruption evacuated a crystal-poor rhyolite (∼3–7% crystals) producing a volumetrically dominant (∼1.4 km3) pumice raft, as well as seafloor giant pumice (5–8%) and lavas (12–14%) at the vent (∼0.1 km3), both of which have subtly higher ...
Joseph Knafelc +3 more
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