Results 1 to 10 of about 34,730 (158)

Transient rhyolite melt extraction to produce a shallow granitic pluton. [PDF]

open access: yesSci Adv, 2021
Shallow high-silica granites provide a window into processes that may precede many styles of rhyolitic volcanic eruptions.
Schaen AJ   +6 more
europepmc   +5 more sources

A Positive Feedback Between Crustal Thickness and Melt Extraction for the Origin of the Martian Dichotomy. [PDF]

open access: yesJ Geophys Res Planets, 2022
AbstractA North/South difference in crustal thickness is likely at the origin of the Martian dichotomy in topography. Recent crustal thickness maps were obtained by inversion of topography and gravity data seismically anchored at the InSight station.
Bonnet Gibet V   +3 more
europepmc   +4 more sources

Enhanced crystal-melt segregation within dynamic mush systems links silicic cumulates with caldera-forming eruptions [PDF]

open access: yesNature Communications
Supported by the mush model, the origin of crystal-poor, high-silica rhyolitic magmas (≥ 75 SiO₂ wt.%) is commonly linked to melt extraction in shallow, crystalline mushes, yet their complementary cumulates remain elusive in the upper crust.
Lucas M. Lino   +8 more
doaj   +2 more sources

Ambient and selective synthesis of dihydro-benzimidazoquinazolines in deep eutectic melt of betaine and trichloroacetic acid [PDF]

open access: yesRSC Advances
The deep eutectic melt of betaine and trichloroacetic acid efficiently promoted the reaction of 2-(2-aminophenyl)benzimidazole with arylaldehydes at ambient temperature, yielding selectively dihydro-benzimidazoquinazoline derivatives in fairly high ...
Zahra Fadaei   +2 more
doaj   +2 more sources

A model of episodic melt extraction for plumes [PDF]

open access: yesJournal of Geophysical Research, 2006
A model of melt segregation and extraction within rising plumes is proposed. It is based on two‐phase porous flow within the partially molten region, combined with only three extraction parameters. The conservation equations of mass, momentum, and energy are solved for a two‐phase melt matrix system.
exaly   +2 more sources

Multiphase rheology as a cause for stick-slip like melt extraction

open access: yesEarth and Planetary Science Letters, 2022
Abstract When partial melting is parametrized in numerical thermo-mechanical models in a straightforward manner, it directly relates to variations in temperature. However, melt extraction is, to our knowledge rarely taken into account in these models, even if melt extraction and escape have a key influence on the mechanical behaviour of the entire ...
Jean-Louis Vigneresse   +1 more
exaly   +3 more sources

Melt extraction from partially molten peridotites

open access: yesGeochemistry, Geophysics, Geosystems, 2003
We measured the rate of melt extraction from partially molten olivine aggregates into a porous reservoir as a function of melt content (ϕ), melt viscosity, grain size, and pressure difference. Samples were prepared using mixtures of olivine and either lithium silicate, MORB glass, or albite glass to obtain a range in melt viscosities.
Greg Hirth, Brian Evans
exaly   +2 more sources

Tensile Properties and Fracture Reliability of Melt-extracted Gd-rich Amorphous Wires [PDF]

open access: yesMaterials Research, 2015
Gd60Al20Co20 amorphous wires with smooth surfaces and circular cross-sections were fabricated by a melt-extraction technique. The mechanical properties of the extracted microwires were evaluated by tensile tests and their fracture reliability was ...
Hongxian Shen   +6 more
doaj   +2 more sources

Magnetocaloric Effect in Uncoated Gd55Al20Co25 Amorphous Wires [PDF]

open access: yesMaterials Research, 2015
The Gd55Al20Co25 amorphous wires exhibit a relatively strong magnetocaloric effect (MCE). These melt-extracted amorphous wires display second-order magnetic transition (SOMT) and the value of maximal magnetic entropy (–ΔSm) for the melt-extracted wires ...
Dawei Xing   +8 more
doaj   +2 more sources

Superelasticity in Polycrystalline Ni-Mn-Ga-Fe Microwires Fabricated by Melt-extraction [PDF]

open access: yesMaterials Research, 2015
Ni48Mn26.4Ga19.7Fe5.9 microwires with grain size of 1-3 micron were successfully fabricated by melt-extraction. The superelastic effects in the microwires under various temperatures and loads were systematically demonstrated.
Yanfen Liu   +6 more
doaj   +1 more source

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