Results 91 to 100 of about 18,310,087 (195)

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

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

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

The upper crustal magma plumbing system of the Pleistocene Apacheta-Aguilucho Volcanic Complex area (Altiplano-Puna, northern Chile) as inferred from the erupted lavas and their enclaves [PDF]

, 2019
The evolution of the magma plumbing system of the Pleistocene Apacheta-Aguilucho Volcanic Complex area (Altiplano-Puna Volcanic Complex, northern Chile) was investigated through petrographic, geochemical and isotopic studies of representative lavas and ...
Piscaglia, Filippo, Renzulli, Alberto, Godoy, Benigno, Marco Taussi, Benigno Godoy, Andrew Menzies, Samuele Agostini, Morata Céspedes, Diego, Menzies, Andrew, Guillermo Gallmeyer, Petrus Le Roux, Le Roux, Petrus, González Maurel, Osvaldo, Gallmeyer, Guillermo, Osvaldo Gonzalez-Maurel, Diego Morata, Filippo Piscaglia, Taussi, Marco, Alberto Renzulli, Agostini, Samuele   +19 more
core   +1 more source

Satellite Geodesy Unveils a Decade of Summit Subsidence at Ol Doinyo Lengai Volcano, Tanzania

Geophysical Research Letters
The processing of hundreds of Synthetic Aperture Radar (SAR) images acquired by two satellite systems: Sentinel‐1 and COSMO‐SkyMed reveals a decade of ground deformation for a ∼0.5 km diameter area around the summit crater of the only active carbonatitic
Christelle Wauthier, Cristy Ho
doaj   +1 more source

Magma hybridization in multilevel plumbing system beneath Lascar volcano (Central Volcanic Zone, Chile)

International audienceUnderstanding how magma storage architecture and mafic recharge control eruptive behaviour is essential for interpreting explosive volcanism in thickened continental crust.
Cárdenas, Álvaro, Salas, Pablo, Hanchar, John M., Scheinost, Alexander, Scaillet, Bruno, Muñoz, Yoseline, Esquivel, Alfredo, Ruprecht, Philipp, Michelfelder, Gary S., Oliveros, Verónica   +9 more
core   +1 more source

Dynamics and time evolution of a shallow plumbing system: The 1739 and 1888–90 eruptions, Vulcano Island, Italy

, 2015
In this work we analyze the morphology of latitic enclaves occurring in the rhyolitic lava flow of Pietre Cotte (Island of Vulcano, Italy). We show that enclave morphology is a feature inherited from the shallow plumbing system of the volcano during the ...
Vetere, Francesco Pasqualino, PETRELLI, MAURIZIO, Morgavi, Daniele, PERUGINI, Diego   +3 more
core   +1 more source

Petrologic Reconstruction of the Tieshan Magma Plumbing System: Implications for the Genesis of Magmatic-Hydrothermal Ore Deposits within Originally Water-Poor Magmatic Systems

, 2020
Most genetic models for magmatic-hydrothermal ore deposits are based on the prerequisite that the parental magmas associated with mineralization are enriched in water (> similar to 4 wt %).
Zhou, Jin-Sheng, Zhao, Zhen-Hua, Wang, Qiang, Wyman, Derek A.   +3 more
core   +1 more source

Magma plumbing beneath Anak Krakatau volcano, Indonesia : evidence for multiple magma storage regions

, 2011
Understanding magma plumbing is essential for predicting the behaviour of explosive volcanoes. We investigate magma plumbing at the highly active Anak Krakatau volcano (Indonesia), situated on the rim of the 1883 Krakatau caldera by employing a suite of ...
Gardner, Mairi F., Chadwick, Jane P., Ivan Koulakov, Troll, Valentin R.,, Jaxybulatov, Kairly, Valentin R. Troll, Kairly Jaxybulatov, Màiri F. Gardner, Ulf B. Andersson, Andersson, Ulf B., Koulakov, Ivan, Dahrén, Börje, Jane P. Chadwick, Troll, Valentin R., Börje Dahren, Dahrén, Börje,   +15 more
core   +1 more source

Insights into the magma plumbing system architecture beneath an off-ridge ocean island (Terceira, Azores) from crystal zoning

Volcanica
Understanding the architecture and dynamics of crustal magmatic plumbing systems is essential for interpreting volcanic processes and eruption styles in ocean island settings.
Kat Shepherd, Olivier Namur, David Neave, Yishen Zhang, Thomas Van Gerve, Tom Van Helden, Thibaut Van Acker, Stephan Klemme, Jasper Berndt-Gerdes, Bernard Charlier, Jacqueline Vander Auwera   +10 more
doaj   +1 more source