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Understanding crystal populations and their significance through the magma plumbing system
Geological Society, London, Special Publications, 2008Abstract Crystals are rarely composed of a single crystal population that have grown solely from the batch of magma in which they are resident on emplacement, either by eruption or shallow intrusion. Close investigation of the majority of crystal populations reveal that they comprise up to four main components: phenocrysts, crystals co ...
Jerram, Dougal A., Martin, Victoria
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Moscow University Bulletin. Series 4. Geology, 2018
Zoned crystals record changes in magma evolution, such as injection of mafic magma into a shallow magma chamber, which often triggered to eruption of arc volcanoes. We applied diffusion chronometry for reverse zoned crystals of orthopyroxene from 6 eruptions of Bezymianny volcano during 2006–2012 years and showed correlation between time of injection ...
V. O. Davydova +2 more
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Zoned crystals record changes in magma evolution, such as injection of mafic magma into a shallow magma chamber, which often triggered to eruption of arc volcanoes. We applied diffusion chronometry for reverse zoned crystals of orthopyroxene from 6 eruptions of Bezymianny volcano during 2006–2012 years and showed correlation between time of injection ...
V. O. Davydova +2 more
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Geochemical evidence for invasion of Kilauea's plumbing system by Mauna Loa magma
Nature, 1989From the beginning of the study of Hawaiian volcanism there has been controversy over possible relationships between the neighbouring active volcanoes Mauna Loa and Kilauea1–5. Seismic activity, thought to reflect upward migration of magma, reveals that the magmatic plumbing systems apparently converge at depth to form a broad funnel within the mantle6.
J. M. Rhodes +4 more
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Visualising magma plumbing systems in 4D
Significant advances have been made in using a wide variety of geophysical techniques to track melt migration, image the structure of active and ancient magma plumbing systems, and constrain emplacement mechanics. In particular, integrating traditional petrological and geochemical results with such geophysical data and modelling has afforded exciting ...openaire +1 more source
2023
Deciphering the architecture of the plumbing system beneath active volcanoes and the pre-eruptive magma dynamic is of key importance to discuss about the eruptive style and petrological warning signal. Here Dominica in the Lesser Antilles arc is chosen as a key case study to illustrate the scientific approach.
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Deciphering the architecture of the plumbing system beneath active volcanoes and the pre-eruptive magma dynamic is of key importance to discuss about the eruptive style and petrological warning signal. Here Dominica in the Lesser Antilles arc is chosen as a key case study to illustrate the scientific approach.
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Magma plumbing system architecture and dynamics, a crystal perspective
Magmas on Earth are more or less crystallized and they may display a wide range of crystal type, sometimes referred as the crystal cargo. First, crystals may entrap silicate melt from magma reservoirs as melt inclusions, acting as witness of magma storage conditions at the time of their entrapment.openaire +1 more source
The Magma Plumbing System of Merapi: The Petrological Perspective
2023Valentin R. Troll, Frances M. Deegan
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Stress-controlled magma-plumbing system during rift evolution
Rift zones host highly dynamic melt pathways in which magma may ascend vertically as dikes or migrate laterally to form sills, generating complex trans-crustal magma plumbing systems. While diking is a well-recognized consequence of extension, the mechanisms that promote sill emplacement during rifting remain poorly constrained.Ameha Muluneh +6 more
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Evolution of the magma plumbing system at São Jorge Island, Azores
Recent unrest events on São Jorge Island (Azores, Portugal) may signal impending volcanic eruptions, highlighting the urgent need to better understand the island’s magma system. Some of the analyzed basaltic and hawaiitic S. Jorge lavas show evidence of magma mixing and rapid assembly of crystals shortly preceding the eruptions. A subset of the studiedAndrea Marzoli +11 more
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Nyamulagira’s magma plumbing system revealed by 15 years of InSAR
2013Nyamulagira, located in the east of the Democratic Republic of Congo on the western branch of the East African rift, is Africa's most active volcano, with an average of one eruption every 3 years since 1938. Owing to the socio-economical context of that region, the volcano lacks ground-based geodetic measurements but has been monitored by ...
Wauthier, Christelle +8 more
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