Journal ArticleDOI
Phlogopite-clinopyroxenite nodules from high-K magmas, Roccamonfina Volcano, Italy: evidence for a low-pressure metasomatic origin
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TLDR
The authors found phlogopite pyroxenites within voluminous pyroclastic deposits of widely varying ages and compositions at Roccamonfina Volcano, and they showed a variety of reaction textures in relation to both clinopyroxene and olivine.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1990-12-01. It has received 24 citations till now. The article focuses on the topics: Phlogopite & Phenocryst.read more
Citations
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Genesis of Ultramafic Lamprophyres and Carbonatites at Aillik Bay, Labrador: a Consequence of Incipient Lithospheric Thinning beneath the North Atlantic Craton
Sebastian Tappe,Stephen F. Foley,George A. Jenner,Larry M. Heaman,Bruce A. Kjarsgaard,Rolf L. Romer,Andreas Stracke,Nancy Joyce,Jochen Hoefs +8 more
TL;DR: Aillikite is a type of ultramafic lamprophyre that consists of olivine and phlogopite phenocrysts in a carbonateor clinopyroxene-dominated groundmass.
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Shoshonite and sub-alkaline magmas from an ultrapotassic volcano: Sr–Nd–Pb isotope data on the Roccamonfina volcanic rocks, Roman Magmatic Province, Southern Italy
Sandro Conticelli,Sara Marchionni,Davide Rosa,Guido Giordano,Elena Boari,Riccardo Avanzinelli,Riccardo Avanzinelli +6 more
TL;DR: The Roccamonfina volcano is characterised by two stages of volcanic activity that are separated by volcano-tectonic caldera collapses in the Northern Roman Province as discussed by the authors.
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Fluid inclusion studies of ejected nodules from plinian eruptions of Mt. Somma-Vesuvius
TL;DR: In this paper, the authors examined cumulate and subeffusive nodules from the 3800 y.B. Avellino and A.D. 472 Pollena eruptions to assess the fluids attending crystallization and to place constraints on the pressure and temperature of nodule formation.
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Experimental melting of phlogopite-peridotite in the garnet stability field
TL;DR: In this article, the phlogopite-peridotite mixture was analyzed at 3 GPa, between 1150 and 1450 °C, and the results showed that the mixture is silica-understandably foiditic to trachybasaltic in composition.
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Fractional crystallization of high-K arc magmas: biotite- versus amphibole-dominated fractionation series in the Dariv Igneous Complex, Western Mongolia
TL;DR: The Dariv Igneous complex of Western Mongolia is composed of a moderately hydrous, alkaline fractionation sequence ranging from phlogopite-bearing ultramafic and mafic cumulates to quartz-monzonites to late-stage felsic (63-75 wt% SiO2) dikes as mentioned in this paper.
References
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Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas
Henry J. B. Dick,Thomas Bullen +1 more
TL;DR: The composition of chromian spinels in alpine-type peridotites has a large reciprocal range of Cr and Al, with increasing Cr# (Cr/(Cr+Al)) reflecting increasing degrees of partial melting in the mantle as mentioned in this paper.
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Solar-system abundances of the elements
Edward Anders,Mitsuru Ebihara +1 more
TL;DR: In this paper, the Ogueil Cl meteorite and all previous Cl chondrite analyses were employed to develop a new solar system abundance table, including the standard deviation and number of analyses for each element.
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The iron-titanium oxides of salic volcanic rocks and their associated ferromagnesian silicates
TL;DR: In this article, the coexisting microphenocrysts of magnetite and ilmenite together with the ferromagnesian silicates in salic volcanic rocks have been analyzed with the electron microprobe.
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Olivine-Liquid Equilibria: Temperature, Pressure and Composition Dependence of the Crystal/Liquid Cation Partition Coefficients for Mg, Fe2+, Ca and Mn
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Minor-Element Distribution in Olivine
Tom Simkin,J. V. Smith +1 more
TL;DR: In this paper, micro-probe analyses of natural igneous olivines from many rocks confirm that Ni increases and Mn de-decreases with increasing Mg content.