Results 11 to 20 of about 5,658 (224)

Orientation of the eruption fissures controlled by a shallow magma chamber in Miyakejima

open access: yesFrontiers in Earth Science, 2016
Orientation of the eruption fissures and composition of the lavas of the Miyakejima volcano indicate tectonic influence of a shallow magma chamber on the distribution of eruption fissures.
Nobuo Geshi, Teruki Oikawa
doaj   +2 more sources

Feeding of a magma chamber by an ascending magma bubble [PDF]

open access: yesGeophysical Journal International, 2021
SUMMARY There is evidence that magma chambers are not fed by a continuous flow, but in the form of discrete magma batches. The possibility is considered that the chamber is fed by a magma bubble ascending through the region underneath, driven by buoyancy force.
Dragoni M.
openaire   +2 more sources

Thermal model of the Vesuvius magma chamber [PDF]

open access: yesGeophysical Research Letters, 2006
A thermal modeling of the Vesuvius is presented, based on its magmatic and volcanic history. A 2D numerical scheme has been developed to evaluate the heat transfer inside and around a magma body, the latent heat of crystallization and the inputs of magma from the asthenosphere to a crustal reservoir.
DE LORENZO S.   +4 more
openaire   +4 more sources

Magma evolution inside the 1631 Vesuvius magma chamber and eruption triggering

open access: yesOpen Geosciences, 2017
Vesuvius is a high-risk volcano and the 1631 Plinian eruption is a reference event for the next episode of explosive unrest. A complete stratigraphic and petrographic description of 1631 pyroclastics is given in this study.
Stoppa Francesco   +5 more
doaj   +2 more sources

An upper-crust lid over the Long Valley magma chamber. [PDF]

open access: yesSci Adv, 2023
Geophysical characterization of calderas is fundamental in assessing their potential for future catastrophic volcanic eruptions. The mechanism behind the unrest of Long Valley Caldera in California remains highly debated, with recent periods of uplift ...
Biondi E   +4 more
europepmc   +2 more sources

Forecasting magma-chamber rupture at Santorini volcano, Greece. [PDF]

open access: yesSci Rep, 2015
How much magma needs to be added to a shallow magma chamber to cause rupture, dyke injection, and a potential eruption? Models that yield reliable answers to this question are needed in order to facilitate eruption forecasting.
Browning J, Drymoni K, Gudmundsson A.
europepmc   +3 more sources

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+2 more sources

The Rustenburg Layered Suite formed as a stack of mush with transient magma chambers

open access: yesNature Communications, 2021
The Rustenburg Layered Suite of the Bushveld Complex, South Africa, has long been regarded as a textbook result of fractional crystallization from a melt-dominated magma chamber.
Zhuosen Yao   +2 more
doaj   +1 more source

Investigating the Impact of an Exsolved H2O‐CO2 Phase on Magma Chamber Growth and Longevity: A Thermomechanical Model

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Magmatic volatiles drive pressure, temperature, and compositional changes in upper crustal magma chambers and alter the physical properties of stored magmas.
Kathryn Scholz   +5 more
doaj   +1 more source

A 5-km-thick reservoir with > 380,000 km3 of magma within the ancient Earth's crust

open access: yesScientific Reports, 2022
Several recent studies have argued that large, long-lived and molten magma chambers may not occur in the shallow Earth’s crust. Here we present, however, field-based observations from the Bushveld Complex that provide evidence to the contrary.
Rais Latypov   +4 more
doaj   +1 more source

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