Results 101 to 110 of about 5,658 (224)
The theoretical basis for textural indices of eruption dynamics: review and new conceptual models
Earth, Planets and SpaceThe textural indices of eruption products (pumice, scoria and lavas), number density of crystals or bubbles, or characteristics of their size distributions, have been proposed to estimate dynamic properties such as magma ascent rates, on the basis of ...
Atsushi Toramaru
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Role of mechanical erosion in controlling the effusion rate of basaltic eruptions
Geophysical Research Letters, 2016 In many basaltic eruptions, observations show that the effusion rate of magma has a typical dependence on time: the effusion rate curves show first a period of increasing and later a decreasing phase by a maximum value. We present a model to explain this
Antonello Piombo +2 more
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, 2009 When people think of molten rock, they automatically think of volcanic eruption and lava flow, but that is only the tail end of magmatic systems. Molten rock begins underground as magma, and its properties determine whether or not the system will end in ...
Cox, Tiffany F.
core
, 1995 The Neapolitan Yellow Tuff, the product of the largest known trachytic phreatoplinian eruption, gives a good opportunity to investigate the filling mechanisms and internal dynamics of a trachytic magma chamber.
Di Girolamo P. +4 more
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The Eastern Layered Intrusion of the Rum Layered Suite comprises paired peridotite and allivalite (troctolite and gabbro)layers forming 16 macro-rhythmic units.
Woods, A. W. +3 more
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The shallow magma chamber of Stromboli Volcano (Italy)
Geophysical Research Letters, 2017 In this work, we integrate artificial and natural seismic sources data to obtain high‐resolution images of the shallow inner structure of Stromboli Volcano. Overall, we used a total of 21,953 P readings from an active seismic experiment and an additional
D. Patanè +8 more
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Heat diffusion and size reduction of a spherical magma chamber
, 1984 An analytical solution is derived for the size reduction of a spherical magma chamber cooling by conduction. The use of moving boundary conditions and the constraint of a spherical symmetry allow one to ignore the details of the heat redistribution ...
Boschi E., Dragoni M., Bonafede M.
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Magma Chamber Rejuvenation: Insights from Numerical Models
, 2017 Most volcanic systems on Earth are characterized by chemically different magmas that can be found in the erupted products throughout their history. The reasons are multiple, including variations in the mantle source and/or crustal assimilation, as well ...
Montagna, Chiara Paola +3 more
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Igneous Layering in Basaltic Magma Chambers
, 2015 Layering is a common feature in mafic and ultramafic layered intrusions and generally consists of a succession of layers characterized by contrasted mineral modes and/or mineral textures, including grain size and orientation and, locally, changing mineral compositions.
Namur, Olivier +17 more
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, 2007 The Campi Flegrei (Campanian Region, Italy) experienced two cataclysmic caldera-forming eruptions which produced the Campanian Ignimbrite (39 ka, CI) and the Neapolitan Yellow Tuff (15 ka, NYT).
Pabst, Sonja +8 more
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