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
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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 +3 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 +4 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
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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
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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 Skaergaard trough layering: sedimentation in a convecting magma chamber. [PDF]
Contrib Mineral Petrol, 2018 The upper parts of the floor cumulates of the Skaergaard Intrusion, East Greenland, contain abundant features known as troughs. The troughs are gently plunging synformal structures comprising stacks of crescentic modally graded layers with a sharply ...
Vukmanovic Z +3 more
europepmc +2 more sources
Using Apatite to Track Volatile Evolution in the Shallow Magma Chamber below the Yonaguni Knoll IV Hydrothermal Field in the Southwestern Okinawa Trough [PDF]
Journal of Marine Science and Engineering, 2023 The Yonaguni Knoll IV is an active seafloor hydrothermal system associated with submarine silicic volcanism located in the “cross back-arc volcanic trail” (CBVT) in the southwestern Okinawa Trough.
Zuxing Chen +5 more
doaj +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