An upper-crust lid over the Long Valley magma chamber. [PDF]
Sci 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
Caldera collapse thresholds correlate with magma chamber dimensions [PDF]
Scientific Reports, 2023 Explosive caldera-forming eruptions eject voluminous magma during the gravitational collapse of the roof of the magma chamber. Caldera collapse is known to occur by rapid decompression of a magma chamber at shallow depth, however, the thresholds for ...
Nobuo Geshi +3 more
doaj +2 more sources
Dense seismic arrays deny a massive magma chamber beneath the Taipei metropolis, Taiwan [PDF]
Scientific Reports, 2021 Several recent studies suggest that the Tatun Volcano Group (TVG) in the Taipei metropolis of Taiwan is still active with a mappable magma chamber beneath it.
Yu-Lien Yeh, Wei-Hau Wang, Strong Wen
doaj +2 more sources
Geochemistry, Geophysics, Geosystems, 2022 Arc volcanoes are underlain by complex systems of molten‐rock reservoirs ranging from melt‐poor mush zones to melt‐rich magma chambers. Petrological and satellite data indicate that eruptible magma chambers form in the topmost few kilometres of the crust.
K. Chrapkiewicz +9 more
doaj +2 more sources
Size distributions of fractures, dykes, and eruptions on Etna, Italy: Implications for magma-chamber volume and eruption potential. [PDF]
Sci Rep, 2019 The main magma source for eruptions on Etna (Italy) is poorly constrained. Here we use data on the size distributions of volcanic fissures/feeder-dykes, crater cones, dyke thicknesses, and lava flows to estimate the average magma volume flowing out of ...
Scudero S, De Guidi G, Gudmundsson A.
europepmc +2 more sources
The thickness of the crystal mush on the floor of the Bushveld magma chamber. [PDF]
Contrib Mineral Petrol, 2017 The thickness of the crystal mush on magma chamber floors can be constrained using the offset between the step-change in the median value of dihedral angles formed at the junctions between two grains of plagioclase and a grain of another phase (typically
Holness MB, Cawthorn RG, Roberts J.
europepmc +2 more sources
Forecasting magma-chamber rupture at Santorini volcano, Greece. [PDF]
Sci 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. Development of a long-lived
Browning J, Drymoni K, Gudmundsson A.
europepmc +2 more sources
Pre-eruptive magmatic processes re-timed using a non-isothermal approach to magma chamber dynamics. [PDF]
Nat Commun, 2016 Constraining the timescales of pre-eruptive magmatic processes in active volcanic systems is paramount to understand magma chamber dynamics and the triggers for volcanic eruptions.
Petrone CM +3 more
europepmc +2 more sources
Ardnamurchan 3D cone-sheet architecture explained by a single elongate magma chamber. [PDF]
Sci Rep, 2013 The Palaeogene Ardnamurchan central igneous complex, NW Scotland, was a defining place for the development of the classic concepts of cone-sheet and ring-dyke emplacement and has thus fundamentally influenced our thinking on subvolcanic structures.
Burchardt S +4 more
europepmc +2 more sources
Magma evolution inside the 1631 Vesuvius magma chamber and eruption triggering
Open 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.
Francesco Stoppa, Claudia Principe
exaly +2 more sources