Laser Ablation ICPMS study of trace element partitioning between plagioclase and basaltic melts: an experimental approach

dc.creatorAigner-Torres, M
dc.creatorBlundy, J
dc.creatorUlmer, P
dc.creatorPettke, T
dc.date2007
dc.dateJUN
dc.date2014-11-16T22:03:55Z
dc.date2015-11-26T17:26:59Z
dc.date2014-11-16T22:03:55Z
dc.date2015-11-26T17:26:59Z
dc.date.accessioned2018-03-29T00:14:09Z
dc.date.available2018-03-29T00:14:09Z
dc.identifierContributions To Mineralogy And Petrology. Springer, v. 153, n. 6, n. 647, n. 667, 2007.
dc.identifier0010-7999
dc.identifierWOS:000245967600002
dc.identifier10.1007/s00410-006-0168-2
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/61152
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/61152
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/61152
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284686
dc.descriptionPlagioclase-melt partition coefficients (D) for 34 trace elements at natural concentration levels were determined experimentally in a natural MORB composition at atmospheric pressure using thin Pt-wire loops. Experiments were carried out at three temperatures (1,220, 1,200, and 1,180 degrees C), and at three different oxygen fugacities (fO(2) = IW, QFM, air) in order to assess the effect of fO(2) on the partitioning of elements with multiple valence (Fe, Eu, Cr). Run products were analyzed by laser-ablation ICP-MS. Most trace element Ds increase slightly as temperature decreases, except for D(Zr), D(Fe), D (Eu) and D(Cr) that vary systematically with fO(2). Applying the Lattice Strain Model to our data suggests the presence of Fe(2+)entirely in the octahedral site at highly to moderate reducing conditions, while Fe(3+) was assigned wholly to the tetrahedral site of the plagioclase structure. Furthermore, we provide a new quantitative framework for understanding the partitioning behaviour of Eu, which occurs as both 2+ and 3+ cations, depending on fO(2) and confirm the greater compatibility of Eu(2+) which has an ionic radius similar to Sr, relative to Eu(3+) in plagioclase and the higher Eu(2+) / Eu(3+) under reducing conditions. For petrogenetic basaltic processes, a combined fractionation of Eu(2+) and Fe-Mg by plagioclase has considerable potential as an oxybarometer for natural magmatic rocks.
dc.description153
dc.description6
dc.description647
dc.description667
dc.languageen
dc.publisherSpringer
dc.publisherNew York
dc.publisherEUA
dc.relationContributions To Mineralogy And Petrology
dc.relationContrib. Mineral. Petrol.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjecttrace elements
dc.subjectmelting experiments
dc.subjectplagioclase
dc.subjectLA-ICPMS
dc.subjectPlasma-mass-spectrometry
dc.subjectOxygen Fugacity
dc.subjectOxidation-states
dc.subjectExperimental Petrology
dc.subjectRidge Basalt
dc.subjectFeldspar
dc.subjectEuropium
dc.subjectIron
dc.subjectCoefficients
dc.subjectPressure
dc.titleLaser Ablation ICPMS study of trace element partitioning between plagioclase and basaltic melts: an experimental approach
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución