Journal ArticleDOI
Phenocryst/matrix trace-element partition coefficients for hawaiite-trachyte lavas from the Ellittico volcanic sequence (Mt. Etna, Sicily, Italy)
Reads0
Chats0
TLDR
A set of phenocryst/matrix partition coefficients was obtained for up to 29 trace elements (ICP-MS analyses) in hawaiite to trachyte lavas from the Ellittico volcanic sequence (Mt. Etna system, Sicily) as mentioned in this paper.Abstract:
A set of phenocryst/matrix partition coefficients was obtained for up to 29 trace elements (ICP-MS analyses) in hawaiite to trachyte lavas from the Ellittico volcanic sequence (Mt. Etna system, Sicily). Partition coefficients were determined for plagioclase, clinopyroxene, olivine, kaersutite and Ti-magnetite. These phases, along with apatite (not analysed in this work), constitute the common fractionating solid assemblage of alkaline magmas feeding Mt. Etna volcanic system. The obtained data set forms the first attempt to characterise the solid/melt trace-element partitioning for Etnean magmas, and can be usefully applied in other sites of alkaline volcanism. The partition coefficients are here used to define the scale of incompatibility of 29 trace elements and to asses the extent of differentiation processes and the prevailing oxygen fugacity of Ellittico magmas.read more
Citations
More filters
Journal ArticleDOI
Calcic amphiboles in calc-alkaline and alkaline magmas: thermobarometric and chemometric empirical equations valid up to 1,130°C and 2.2 GPa
Filippo Ridolfi,Alberto Renzulli +1 more
TL;DR: In this article, the authors present constraints of the stability of Mg-rich amphiboles in both calc-alkaline and alkaline magmas, testing of previous thermobarometers, and formulation of new empirical equations that take into consideration a large amount of literature data (e.g. more than one thousand amphibole compositions among experimental and natural crystals).
Journal ArticleDOI
The chemistry of hydrothermal magnetite: A review
TL;DR: The most important factors that govern compositional variations in hydrothermal magnetite are (A) temperature, (B) fluid composition, (C) oxygen and sulfur fugacity, (D) silicate and sulfide activity, (E) host rock buffering, (F) reequilibration processes, and (G) intrinsic crystallographic controls such as ionic radius and charge balance as mentioned in this paper.
Journal ArticleDOI
Trace element partitioning between apatite and silicate melts
Stefan Prowatke,Stephan Klemme +1 more
TL;DR: In this paper, the apatite/melt trace element partition coefficients for a large number of trace elements (Cs, Rb, Ba, La, Ce, Pr, Sm, Gd, Lu, Y, Sr, Zr, Hf, Nb, Ta, U, Pb, and Th) were presented.
Journal ArticleDOI
The Petrology and Geochemistry of St. Helena Alkali Basalts: Evaluation of the Oceanic Crust-recycling Model for HIMU OIB
Hiroshi Kawabata,Takeshi Hanyu,Qing Chang,Jun-Ichi Kimura,Alexander R. L. Nichols,Yoshiyuki Tatsumi +5 more
TL;DR: In this paper, major element, trace element, and petrographic data on alkali basalts from St. Helena, and examine the geochemical characteristics of a recycled component involved in the source of HIMU (Pb/Pb420·5) ocean island basalts.
Journal ArticleDOI
Volcanic crystals as time capsules of eruption history.
TL;DR: It is shown that the intrusion of magma can trigger an eruption within 2 weeks of arrival at Mount Etna, Italy from 1974-2014 and high Cr zonations can be used to reconstruct past eruptions and inform responses to geophysical signals of volcano unrest.
References
More filters
Journal ArticleDOI
The composition of the Earth
William F. McDonough,Shen-Su Sun +1 more
TL;DR: In this paper, the authors compared the relative abundances of the refractory elements in carbonaceous, ordinary, and enstatite chondritic meteorites and found that the most consistent composition of the Earth's core is derived from the seismic profile and its interpretation, compared with primitive meteorites, and chemical and petrological models of peridotite-basalt melting relationships.
Journal ArticleDOI
Empirical Correction Factors for the Electron Microanalysis of Silicates and Oxides
A. E. Bence,Arden L. Albee +1 more
TL;DR: In this paper, the calibration curve in a binary metal alloy system can, within the variance of data points, be described by the linear expression $$C_{A}/K{A} = \alpha_{AB} + (1 - α_{AB})C{A]$$, where C is the concentration of element A in alloy  relative to pure A, and K is the background-corrected intensity of a characteristic radiation line of A in the alloy relative to that of pure A. This linear variation of the correction factor with composition can be extended to multicomp
Journal ArticleDOI
Experimental studies of trace-element partitioning applicable to igneous petrogenesis — Sedona 16 years later
TL;DR: In the 16 years since the Sedona Conference on the behavior of trace elements in silicate systems, numerous studies providing new data have filled many of the gaps in knowledge of trace-element partitioning evident at that conference.
Journal ArticleDOI
Partition of Sr, Ba, Ca, Y, Eu/2+/, EU/3+/, and other REE between plagioclase feldspar and magmatic liquid - An experimental study
Michael J. Drake,D. F. Weill +1 more
TL;DR: In this article, plagioclase feldspar/magmatic liquid partition coefficients were determined experimentally at 1 atm total pressure in the temperature range 1150-1400°C.
Journal ArticleDOI
Eruptive and diffuse emissions of CO2 from Mount Etna
Patrick Allard,J. Carbonnelle,D. Dajlevic,J. Le Bronec,P. Morel,M.C. Robe,J. M. Maurenas,R. Faivre-Pierret,D. Martin,J. C. Sabroux,P. Zettwoog +10 more
TL;DR: In this article, the authors used data collected from 1975 to 1987 to estimate carbon dioxide emissions from the summit craters and the upper flanks of the volcano and found that the average output of CO2 from summit crater degassing is 13±3 Tg yr−1, an order of magnitude higher than the annual CO2 output from Kilauea, Hawaii, and representative arc volcanoes.