Results 71 to 80 of about 616 (171)

Insights Into the Eruptive Dynamics of Small Caldera-Forming Eruptions: The Case Study of the Welded Scoriae of Vulcano (Aeolian Islands, Italy)

Frontiers in Earth Science, 2020
A multi-disciplinary study, integrating volcanological field observations, petrography, whole rock geochemistry and textural and compositional analyses on plagioclase crystals has been carried out on the products of Monte Luccia, Spiaggia Lunga, and ...
Eugenio Nicotra, Marta Minniti, Paola Donato, Rosanna De Rosa   +3 more
doaj   +1 more source

Seismic Constraints on Igneous Intrusions and Fluid/Gas Distribution in a Continental Back‐Arc System: Evidence From the Yaeyama Rift in the Southern Okinawa Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract The geometry and distribution of igneous intrusions, which define melt source locations and record syn‐emplacement stress conditions, are essential for understanding tectonic and magmatic processes associated with crustal extension. However, in back‐arc settings along continental margins, structural constraints on these features remain poorly ...
Ryuta Arai, Ayanori Misawa, Makoto Otsubo, Masataka Kinoshita, Saki Ishino, Akane Yamamoto   +5 more
wiley   +1 more source

Deciphering Deception Island's magma plumbing system: An interdisciplinary approach

, 2020
Deception Island (South Shetland Islands) is one of the most active volcanoes in Antarctica, with more than 20 explosive eruptive events registered over the past two centuries. Recent eruptions (1967, 1969, and 1970) and the volcanic unrest episodes that happened in 1992, 1999, and 2014-2015 demonstrate that the occurrence of future volcanic activity ...
Geyer, Adelina, Álvarez-Valero, Antonio M., Gisbert, G., Aulinas, M., Hernández-Barreña, Daniel, Lobo, Agustín, Martí Molist, Joan   +6 more
openaire   +3 more sources

Dynamics of the 2021 unrest at Changbaishan Tianchi volcano from ALOS-2/PALSAR-2 and seismic data

International Journal of Applied Earth Observations and Geoinformation
The Changbaishan Tianchi intraplate volcano is one of the most active and hazardous volcanoes of NE Asia, characterized by a summit caldera formed after the 946 CE ‘Millennium’ Plinian eruption.
Lianhuan Wei, Ying Sun, Xingyu Pan, Guoming Liu, Elisa Trasatti, Cristiano Tolomei, Guido Ventura, Christian Bignami, Meng Ao, Shanjun Liu   +9 more
doaj   +1 more source

A Pyroxenic View on Magma Hybridization and Crystallization at Popocatépetl Volcano, Mexico

Frontiers in Earth Science, 2020
The Popocatépetl Volcanic Complex (PVC) is an active arc volcano located in central Mexico, 70 km southeast of Mexico City. Current models of the PVC’s plumbing system and magma petrogenesis are largely based on studies of isolated Plinian eruptions over
Martin F. Mangler, Martin F. Mangler, Martin F. Mangler, Chiara M. Petrone, Samuel Hill, Hugo Delgado-Granados, Julie Prytulak, Julie Prytulak   +7 more
doaj   +1 more source

Magma titanium and iron contents dictate crystallization timescales and rheological behaviour in basaltic volcanic systems

Communications Earth & Environment
Magma ascending through Earth’s crust undergoes complex chemical and physical changes that may induce crystallization, a process that contributes to lead the magmatic system toward a thermodynamic state of equilibrium. The diverse cooling and deformative
Fabrizio Di Fiore, Alessandro Vona, Danilo Di Genova, Alessio Pontesilli, Laura Calabrò, Silvio Mollo, Jacopo Taddeucci, Claudia Romano, Piergiorgio Scarlato   +8 more
doaj   +1 more source

Structure of the magma plumbing system beneath Semisopochnoi Island (Aleutian Arc) inferred from seismic tomography. [PDF]

Sci Rep, 2022
Yaroshenko G, Koulakov I, Al-Arifi N, Qaysi S, El Khrepy S.   +4 more
europepmc   +1 more source

Petrology, magma mixing, mush mobilization, and timescales of the 1874 A.D. Meiji fissure eruption of Miyakejima, Japan

Frontiers in Earth Science
To understand the processes occurring in shallow magmatic plumbing systems during the generation of effusive flank eruptions, we investigated the petrology and geochemistry of the products of the 1874 A.D. Meiji eruption of Miyakejima, Japan.
D. J. Weller, D. J. Weller, Y. Aoki, N. Geshi, C. E. Conway, S. Sakata, A. Yasuda, M. Gresse, Y. Harigane, N. Hokanishi   +9 more
doaj   +1 more source

Monitoring active volcanoes: The geochemical approach

Annals of Geophysics, 2011
<p>The geochemical surveillance of an active volcano aims to recognize possible signals that are related to changes in volcanic activity. Indeed, as a consequence of the magma rising inside the volcanic "plumbing system" and/or the refilling with ...
Takeshi Ohba, Agnes Mazot, Salvatore Inguaggiato   +2 more
doaj   +1 more source

Magmatic evolution and architecture of an oceanic intraplate volcano: Vesteris Seamount, Atlantic Ocean

Frontiers in Earth Science
Vesteris is a large (33 × 27 km) and young (summit age: 0.65–0.010 Ma) intraplate seamount in the Greenland Sea, formed from ocean island basalt (OIB) magmatism.
L. Beloša, D. T. Murphy, T. Ubide, S. Callegaro, C. M. Meyzen, M. Bizimis, A. Mazzini, A. Mazzini   +7 more
doaj   +1 more source