most high-alumina basalts. First, aphyric calc-alkaline basalts in magmatic arcs seldom contain more than 17 wt % A1203 (e.g., Kuno 1950). Second, high-alumina basalt lavas typ-ically are crystal rich (> 30-40 vol %) with very large proportions of plagioclase pheno-crysts. Third, measured and/or calculated groundmass compositions of such ...
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High-alumina basalt may be silica-undersaturated or -oversaturated (see normative mineralogy). It has greater than 17% alumina (Al 2 O 3) and is intermediate in composition between tholeiitic basalt and alkali basalt; the relatively alumina-rich composition is based on rocks without phenocrysts of …
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How is High-Alumina Basalt abbreviated? HAB stands for High-Alumina Basalt. HAB is defined as High-Alumina Basalt somewhat frequently.
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VI High Al basalt High Al from plag Plagioclase Note that there is a low pressure thermal divide (oliv-plag-cpx) that separates alkali olivine basalts from tholeiites. Basalt series – We can think of three end member series, which represent the major types of basalt magmas and their fractionation products. Alkali olivine basalt series
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"Very High Alumina Basalt": AMixture andNotaMagmaType The proposal by Hubbard et al. (1) that"VeryHighAluminabasalt"("VHA basalt") may represent an important primary lunar magma type neglects consideration of certain well-character- ized high-magnesium highland rocks, among them spinel troctolite from Luna 20 (2) and Apollo 16 samples (3) and dunite from Apollo 17 sam- ples (4), …
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High wear resistant materials produced to line high wear areas with the choice of Alumina, Basalt, Silicon Carbide to solve the needs of many industries. Skip to content 8a Arnott Place Wetherill Park, Sydney NSW 2164
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HAB - High-Alumina Basalt. Looking for abbreviations of HAB? It is High-Alumina Basalt. High-Alumina Basalt listed as HAB. ... High Altitude Burst: HAB: High-Alumina Basalt: HAB: Hawaii Association of the Blind: HAB: Housing Assistance Bureau (Montana Department of Commerce) HAB: High Availability Board: HAB:
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The basalt intrusions are thought to rise through the crust as a network of unrelated melt batches in a plexus of discrete magma chambers and conduits, many of which are sited along fault zones causing fissure eruptions at the surface. Keywords High-alumina basalt, Taupo Volcanic Zone, structural control, mixing and mingling, magma evolution.
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The origin of island arc high-alumina basalts Article (PDF Available) in Contributions to Mineralogy and Petrology 97(3):417-430 · January 1987 with 550 Reads How we measure 'reads'
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A detailed examination of the hypothesis that high-alumina basalts (HAB) in island arcs are primary magmas derived by 50 60% partial melting of subducted ocean crust eclogite shows that this model is unlikely to be viable. Evidence suggests that the overwhelming majority of arc HAB are porphyritic lavas, enriched in Al 2 O 3 > either by protracted prior crystallization of olivine and ...
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The coexistence of both high-MgO, low-alumina basalt (LAB) and low-MgO, high- alumina basalt (HAB) magmatic inclusions within a single andesitic host lava on Kanaga Island provides the opportunity to rigorously evaluate the presence (or absence) of a fractionation relation between the two basalt …
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Distinguishing high-alumina mare basalts using Clementine UVVIS and Lunar Prospector GRS data: Mare Moscoviense and Mare Nectaris Georgiana Y. Kramer,1,2 Bradley L. Jolliff,3 and Clive R. Neal1 Received 13 November 2006; revised 13 August 2007; accepted 8 November 2007; published 16 …
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The typical volcanic rocks of most island arcs and eugeosynclines, and of some continental environments, are basalt, andesite, and dacite, of high alumina content. The high-alumina basalt differs from tholeiitic basalt primarily in having a greater content of the components of calcic plagioclase. Laboratory data indicate that in the upper mantle, below the level at which the basaltic component ...
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New analyses of high-alumina basalts reveal an average nickel content higher than previously indicated. Ni in high-alumina basalts correlates with magnesium in the same way as it does in other basalt types. There is therefore no reason, based on Ni contents, to hypothesize a special origin for high-alumina basalts and it is permissible (based on Ni contents) to form andesites by fractional ...
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Baker , Grove TL, Kinzler RJ, Donnelly-Nolan JM, Wandless GA (1991) Origin of compositional zonation (high alumina basalt-basaltic andesite) in the Giant Crater lava field, Medicine Lake volcano, northern California. J Geophys Res (in press)
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INVESTIGATION INTO THE PETROGENESES OF APOLLO 14 HIGH-ALUMINA BASALTIC MELTS THROUGH CRYSTAL STRATIGRAPHY. H. Hui1, J. G. Oshrin1, and C. R. Neal1, 1Department of Civil Engi- neering and Geological Sciences, University of Notre Dame, Notre Dame, IN 46556, ([email protected],
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Modeling of lunar basalt petrogenesis ... This paper reexamines the Sr isotope data available for the Apollo 14 high-alumina basalts in light of the assimilation and fractional crystallization (AFC) process model proposed by Neal et al. (1987, 1988, 1989).
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The Giant Crater lava field consists of >4 km 3 of basaltic lava, compositionally zoned from first‐erupted calc‐alkaline basaltic andesite to last‐erupted primitive high‐alumina basalt. On the FeO * /MgO (where FeO * is total Fe calculated as FeO) versus SiO 2 discrimination diagram commonly used to distinguish tholeiitic from calc‐alkaline series lavas the compositionally zoned ...
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