Results 81 to 90 of about 28,419 (225)
Modelling of bubble nucleation in trachy-phonolitic magmas: implications for the dynamics of ash-rich eruptions [PDF]
, 2012 Nucleation of water gas bubbles in trachyphonolitic magmatic melts has been investigated integrating theory and numerical modelling with decompression experiments and analysis of natural ash samples of explosive eruptions.
Colucci, Simone
core +1 more source
Mineral Cloud Formation above Magma Oceans in Sub-Neptune Atmospheres
The Astrophysical Journal LettersThe potential presence of a magma surface below a thick atmosphere primarily composed of hydrogen in some sub-Neptune exoplanets suggests a strong link between the interior composition and atmosphere through chemical coupling of volatile and refractory ...
Elspeth K. H. Lee +2 more
doaj +1 more source
Geochemistry, Geophysics, GeosystemsIn volcanic arcs, magma evolves from basaltic to intermediate and felsic composition, resulting in arc crust maturation. It remains unclear whether processes involving mush during magmatic flare‐ups would enhance this evolution.
Long Chen +10 more
doaj +1 more source
Recent eruptive history and magma reservoir dynamics on the southern East Pacific Rise at 17°30′S
Geochemistry, Geophysics, Geosystems, 2007 Submersible‐based geologic observations and geochemical, magnetic paleointensity, and (210Pb/226Ra) radioactive disequilibria data indicate that at least five distinct lava sequences (three normal mid‐ocean ridge basalt (N‐MORB) and two transitional mid ...
Eric C. Bergmanis +2 more
doaj +1 more source
Coreless Terrestrial Exoplanets
, 2008 Differentiation in terrestrial planets is expected to include the formation of a metallic iron core. We predict the existence of terrestrial planets that have differentiated but have no metallic core--planets that are effectively a giant silicate mantle.
Blundell D. +6 more
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Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region [PDF]
, 2006 During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region.
Downes, Hilary +2 more
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Geochemistry, Geophysics, GeosystemsOpen‐conduit conditions characterize several of the most hazardous and active volcanic systems of basaltic composition worldwide, persistently refilled by magmatic inputs. Eruptive products with similar bulk compositions, chemically buffered by continual
A. Pontesilli +10 more
doaj +1 more source
Numerical simulations of the mingling caused by a magma intruding a resident mush
VolcanicaCurrently, our ability to interpret the mechanics of magma mingling and mixing is limited by an incomplete understanding of the modes of mixing across all melt fractions and compositions.
Alexandre Carrara +2 more
doaj +1 more source
Terrestrial Analogs to Titan for Geophysical Research
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Sulfur‐Bearing hcp Iron for Earth's Inner Core
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Earth's iron core is believed to contain light impurities which should have been included during core formation. In order to place constraints on core composition, here we report the effect of sulfur on density of hexagonal close‐packed (hcp) iron which was not previously examined, using laser‐heated diamond anvil cells with in situ ...
Emiko Sugimura‐Komabayashi +7 more
wiley +1 more source