Results 31 to 40 of about 82,590 (220)

Morphostructure Control Towards the Development of Mahawu Volcanic Complex, North Sulawesi

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v7i1.134The studied area, situated in northeastern part of North Sulawesi Arm, is dominantly occupied by the Mahawu, Linau, Tompusu, and Kasurutan volcanic rocks.
S. Poedjoprajitno
doaj   +1 more source

Lithium, Oxygen and Magnesium Isotope Systematics of Volcanic Rocks in the Okinawa Trough: Implications for Plate Subduction Studies

open access: yesJournal of Marine Science and Engineering, 2021
Determining the influence of subduction input on back-arc basin magmatism is important for understanding material transfer and circulation in subduction zones.
Zhigang Zeng   +3 more
doaj   +1 more source

Magma reservoir failure and the onset of caldera collapse at Kīlauea Volcano in 2018

open access: yesScience, 2019
Caldera collapse and flank eruption Real-time monitoring of volcanic eruptions involving caldera-forming events are rare (see the Perspective by Sigmundsson). Anderson et al.
K. Anderson   +7 more
semanticscholar   +1 more source

Flow‐To‐Fracture Transition of Linear Maxwell‐Type Versus Yield Strength Fluids by Air Injection—Implications for Magma Fracturing

open access: yesGeophysical Research Letters, 2023
To illuminate brittle and ductile fracturing of magma, we investigated bubble expansion and fracturing in two contrasting fluids: a Maxwell‐type viscoelastic fluid and a Bingham‐type yield‐strength fluid.
Claudia Sánchez   +2 more
doaj   +1 more source

A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland)

open access: yesFrontiers in Earth Science, 2020
The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing.
Luca Caricchi   +6 more
doaj   +1 more source

Rifting‐Driven Magmatism Along the Dead Sea Continental Transform Fault

open access: yesGeophysical Research Letters, 2023
The Dead Sea Fault (DSF) is a crustal‐scale continental transform fault separating the African and the Arabian plates. Neogene to Quaternary volcanic activity is well‐spread in Northern Israel.
A. Haddad   +6 more
doaj   +1 more source

Convective outgassing efficiency in planetary magma oceans: insights from computational fluid dynamics [PDF]

open access: yes, 2022
Planetary atmospheres are commonly thought to result from the efficient outgassing of cooling magma oceans. During this stage, vigorous convective motions in the molten interior are believed to rapidly transport the dissolved volatiles to shallow depths where they exsolve and burst at the surface.
arxiv   +1 more source

Shear Velocity Evidence of Upper Crustal Magma Storage Beneath Valles Caldera

open access: yesGeophysical Research Letters, 2023
Valles Caldera was formed by large rhyolitic eruptions at ∼1.6 and 1.23 Ma and it hosts post‐caldera rhyolitic deposits as young as ∼69 ka, but the contemporary state of the magmatic system is unclear.
Justin Wilgus   +4 more
doaj   +1 more source

Fizzy Super-Earths: Impacts of Magma Composition on the Bulk Density and Structure of Lava Worlds [PDF]

open access: yesarXiv, 2023
Lava worlds are a potential emerging population of Super-Earths that are on close-in orbits around their host stars with likely partially molten mantles. To date, few studies address the impact of magma on the observed properties of a planet. At ambient conditions magma is less dense than solid rock; however, it is also more compressible with ...
arxiv  

Magma solitons [PDF]

open access: yesGeophysical Research Letters, 1984
Motivated to understand the process of melt migration in the earth’s mantle, we have studied a generalised form of Darcy’s law that describes porous flow in a matrix that can deform by creep. We find a remarkable richness of phenomena, including a new class of solitons.
Scott, David R., Stevenson, David J.
openaire   +3 more sources

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