Results 21 to 30 of about 74,067 (261)
The trigger mechanism of low-frequency earthquakes on Montserrat. [PDF]
, 2006 A careful analysis of low-frequency seismic events on Soufrie`ere Hills volcano, Montserrat, points to a source mechanism that is non-destructive, repetitive, and has a stationary source location.
Dingwell, Donald B +5 more
core +4 more sources
Geochemistry, Geophysics, Geosystems, 2020 Water controls magmatic crystallization and drives volcanic eruptions, but little is known about its primary source in silicic systems. The hydrogen isotope composition of volcanic products provides a metric that can track and identify magmatic source ...
Kenneth S. Befus +3 more
doaj +1 more source
Formalized Mathematics, 2010 Free Magmas This article introduces the free magma M(X) constructed on a set X [6]. Then, we formalize some theorems about M(X): if f is a function from the set X to a magma N, the free magma M(X) has a unique extension of f to a morphism of M(X) into N and every magma is isomorphic to a magma generated by a set X under a set of relators on M(X)
openaire +3 more sources
Frontiers 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
Geochemistry, Geophysics, Geosystems, 2021 Thallium (Tl) isotope ratios are an emerging tool that can be used to trace crustal recycling processes in arc lavas and ocean island basalts (OIBs). Thallium is a highly volatile metal that is enriched in volcanic fumaroles, but it is unknown whether ...
Sune G. Nielsen +6 more
doaj +1 more source
Halogen Enrichment of Siberian Traps Magmas During Interaction With Evaporites
Frontiers in Earth Science, 2021 Volatile emissions to the atmosphere associated with the Siberian Traps eruptions at the Permian-Triassic boundary were sourced from the outgassing of primary magmas and the sedimentary host rocks into which they were intruded. Halogens in volcanic gases
Svetlana Sibik +6 more
doaj +1 more source
Proceedings of the National Academy of Sciences, 2016 For those who remember the classic disaster-docudrama Supervolcano (BBC-Discovery Channel 2005), the adjective “eruptible” is likely to ring a bell. Set in the near future and generally quite scientifically literate, the movie envisions volcanologists trying desperately to evaluate the near-term threat posed by the giant Yellowstone magmatic system. At
openaire +2 more sources
Metal Injection Molding (MIM) of NdFeB Magnets
EPJ Web of Conferences, 2014 Due to the increased and unstable prices for Rare Earth elements there are activities to develop alternative hard magnetic materials. Reducing the amount of material necessary to produce complex sintered NdFeB magnets can also help to reduce some of the ...
Hartwig T. +3 more
doaj +1 more source
Composición química (elementos mayores) de los magmas en el Cinturón Volcánico Mexicano
Geofísica Internacional, 1987 Se presenta una recopilación de 1797 análisis geoquímicos de elementos mayores sobre las rocas ígneas del Cinturón Volcánico Mexicano (CVM). Se analiza el significado geológico de estos datos geoquímicos mediante una serie de histogramas y diagramas ...
V. H. Aguilar y Vargas, S. P. Verma
doaj +1 more source
Substitutional effects of In by Cu in CeIn2
EPJ Web of Conferences, 2014 We have investigated the evolution of the magnetic properties on the Ce(In1−x Cux)2 (0< x ≤ 0.3) series of alloys. The orthorhombic structure of the CeIn2 alloy(Imma)changes into the hexagonal AlB2-type (P6/mmm)for x = 0.05 and, then, into the hexagonal ...
Rojas D. P. +2 more
doaj +1 more source