Results 41 to 50 of about 82,590 (220)
On semibiproducts of magmas and semigroups [PDF]
arXiv, 2022 A generalization to the categorical notion of biproduct, called semibiproduct, which in the case of groups covers classical semidirect products, has recently been analysed in the category of monoids with surprising results in the classification of weakly Schreier extensions.
arxiv
Architecture and dynamics of magma reservoirs
Philosophical Transactions of the Royal Society A, 2019 This introductory article provides a synopsis of our current understanding of the form and dynamics of magma reservoirs in the crust. This knowledge is based on a range of experimental, observational and theoretical approaches, some of which are ...
M. Edmonds +3 more
semanticscholar +1 more source
Hom-associative magmas with applications to Hom-associative magma algebras [PDF]
arXiv, 2023 Let $X$ be a magma, that is a set equipped with a binary operation, and consider a function $\alpha : X \to X$. We that $X$ is Hom-associative if for all $x,y,z \in X$, the equality $\alpha(x)(yz) = (xy) \alpha(z)$ holds. For every isomorphism class of magmas of order two, we determine all functions $\alpha$ making $X$ Hom-associative.
arxiv
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
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
Split extensions and semidirect products of unitary magmas [PDF]
Comment. Math. Univ. Carolin. 60, 4 (2019) 509-527, 2019 We develop a theory of split extensions of unitary magmas, which includes defining such extensions and describing them via suitably defined semidirect product, yielding an equivalence between the categories of split extensions and of (suitably defined) actions of unitary magmas on unitary magmas. The class of split extensions is pullback stable but not
arxiv +1 more source
Depth of Magma Storage Under Iceland Controlled by Magma Fluxes
Geochemistry, Geophysics, Geosystems, 2023 AbstractThe compositions of volcanic materials are sensitive to physical conditions in the underlying magmatic system. When basaltic melts are saturated in olivine‐plagioclase‐augite prior to eruption, their compositions can be used to estimate the pressure at which they last equilibrated.
Baxter, RJM +3 more
openaire +3 more sources
Magma Plumbing Systems: A Geophysical Perspective
Journal of Petrology, 2018 Over the last few decades, significant advances in using geophysical techniques to image the structure of magma plumbing systems have enabled the identification of zones of melt accumulation, crystal mush development, and magma migration.
C. Magee +16 more
semanticscholar +1 more source
Frontiers in Earth Science, 2019 Minor seismicity may occur at volcanoes with hydrothermal system before a steam eruption. To forecast any steam eruption, it is indispensable to detect and understand the nature of this shallow seismicity. As the fumarolic gas resides in the hydrothermal
Takeshi Ohba +6 more
doaj +1 more source
The Role of Magma Oceans in Maintaining Surface Water on Rocky Planets Orbiting M-Dwarfs [PDF]
arXiv, 2023 Earth-like planets orbiting M-dwarf stars, M-Earths, are currently the best targets to search for signatures of life. Life as we know it requires water. The habitability of M-Earths is jeopardized by water loss to space: high flux from young M-dwarf stars can drive the loss of 3--20 Earth oceans from otherwise habitable planets.
arxiv