Results 211 to 220 of about 36,123 (237)
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The crystallization of basalts
American Journal of Science, 1929This classic paper presents Fenner9s views of magmatic differentiation against those of N.L. Bowen (1928). Fenner presents the original case for iron-enrichment trends in residual basaltic liquids, contrasted with an iron depletion trend leading to rhyolite.
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Thermochemistry and melting properties of basalt
Contributions to Mineralogy and Petrology, 2006The heat capacities of the liquid, glassy and crystalline phases of an alkali basalt have been determined from relative enthalpies measured between 400 and 1,800 K. Values given by available models of calculation generally agree to within 2% of these results. As derived from the new data and the enthalpy of vitrification measured at 973 K by oxide-melt
Corine Gérardin +7 more
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The Journal of Geology, 1932
The basalts of Patagonia, as determined from the literature and from the microscopical and chemical study of rocks from three widely separated localities, are found to belong to those slightly undersaturated types which appear to be characteristic of plateau-basalts in the restricted sense of Gregory and Reck.
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The basalts of Patagonia, as determined from the literature and from the microscopical and chemical study of rocks from three widely separated localities, are found to belong to those slightly undersaturated types which appear to be characteristic of plateau-basalts in the restricted sense of Gregory and Reck.
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2017
In this section, the basic and the latest developments of basalt fiber and its composites will be reviewed in detail. In this context, the chapter involves an introduction, preparation, and the structural (mechanical, thermal, etc.) properties as a beginning to the basalt fiber.
Ferit Cakir +3 more
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In this section, the basic and the latest developments of basalt fiber and its composites will be reviewed in detail. In this context, the chapter involves an introduction, preparation, and the structural (mechanical, thermal, etc.) properties as a beginning to the basalt fiber.
Ferit Cakir +3 more
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Improving the tensile strength of continuous basalt fiber by mixing basalts
Fibers and Polymers, 2017SiO2 is a key factor that affects the tensile strength of continuous basalt fiber, as shown in a previous study. In the present work, to improve the tensile strength of continuous basalt fiber, basalts with a high SiO2 content were mixed with basalts with a low SiO2 content to obtain basalt mixtures with SiO2 contents ranging from 51 to 58 %.
Haibin Huo +3 more
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Celadonite in continental flood basalts of the Columbia River Basalt Group
American Mineralogist, 2012Celadonite is a common alteration product of basalts in marine environments. It has been argued that marine fluids are necessary for celadonite formation, possibly by providing a source of K and other dissolved cations. Laterally extensive deposits of celadonite occur in basalts of the Grande Ronde Basalt of the Columbia River Basalt Group.
William C. Rember +3 more
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An Account of the Basalts of Saxony
2013Jean-François Daubuisson (1769–1841), geologist and engineer, was an Officer of the Légion d'Honneur, Knight of St Louis and Chief Engineer at the Royal Mining Corps. He published numerous papers on geology, mining and hydraulics, and is best known for his textbooks, Traité de géognosie and Traité d'hydraulique.
Patrick Neill +1 more
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Properties of thermally recycled basalt fibres and basalt fibre composites
Journal of Materials Science, 2017The reduction to the tensile failure stress caused by high-temperature incineration of basalt fibres is investigated. The failure stress of single basalt fibres and tows decreases rapidly with increasing temperature when heated above ~ 250 °C, and at temperatures typically used for incineration of waste composite materials (450–600 °C) the fibre ...
Adrian P. Mouritz +3 more
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Three basaltic earth-approaching asteroids and the source of the basaltic meteorites
Icarus, 1991Diameters of 1.2, 1.0, and 3.4 km are respectively derived for the earth-approaching asteroids 1983 RD, 1980 PA, and 1985 DO2, whose spectra are virtually identical to that of the basaltic-surfaced large asteroid, Vesta. While probably not fragments of Vesta, the three asteroids may be fragments of one or more Vesta-like parent bodies; it is suggested ...
Robert H. Brown +5 more
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