Topic
Phenocryst
About: Phenocryst is a research topic. Over the lifetime, 4132 publications have been published within this topic receiving 158441 citations.
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TL;DR: In this paper, three types of melt inclusion were distinguished, based on their occurrence and the composition of their olivine host: Type-I inclusions occur in phenocryst cores (Fo 77-73 ); Type-II inclusions occurred in Phenocryst mantles (Foo 71-66); Type-III inclusions within groundmass olivines.
52 citations
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TL;DR: In this article, the authors present 87 Rb/86 Sr and 230 Th/ 238 U isotope analyses of glasses and phenocrysts from postcaldera rhyolites erupted between 150 to 100 ka from the Long Valley magmatic system.
52 citations
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TL;DR: In this paper, a complete spectrum of trends from one where all REE increase with differentiation (peralkaline series of the Chinati Mountains, Texas) to one when all except Ce decrease with fractionation (Batopilas, Mexico).
52 citations
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TL;DR: In this paper, the authors show that the pyroxene-tholeiites and plagioclase-tholesiites can be differentiated by crystal fractionation of the high-alumina plagioclase phenocrysts and more than 17% Al2O3.
52 citations
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TL;DR: In this paper, it was shown that the Quaternary basalts contained a component of partial melt of subcontinental lithospheric mantle, which is consistent with the low 143 Nd/ 144 Nd ratios of the basalts.
52 citations