Boron partitioning in the upper mantle; an experimental and ion probe study

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doi: 10.1016/0016-7037(93)90607-X
Authors:Chaussidon, Marc; Libourel, Guy
Author Affiliations:Primary:
Centre de Recherches Pétrographiques et Géochimiques (CRPG-CNRS), Nancy, France
Université de Nancy, France
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 57(23-24), p.5053-5062. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1993
Note:In English. 44 refs.; illus. incl. 5 tables
Summary:The partition coefficients of B between olivine, orthopyroxene, clinopyroxene, spinel and coexisting melt are presented, from an ion-probe analysis of spinel lherzolites simulating upper mantle conditions. The results show that B is strongly incompatible during partial melting in the mantle. Distribution coefficients between minerals and melt decrease in the order: Dcpx- melt(0.117) > Dsp-melt(0.08) >> Dol-melt(0.034) > Dopx-melt(0.027). From these results and assuming the MORB are produced by 5-20% partial melting, the depleted mantle source of MORB contains approx 0.05-0.3 ppm B, agreeing with a budget of B between mantle, crust and sea-water. B is shown to be a useful geochemical tracer of mantle processes such as basalt genesis or metasomatism. [R.K.H.]
Subjects:Basalts; Boron; Igneous rocks; In situ; Ion probe; Mantle; Mass balance; Mass spectroscopy; Mid-ocean ridge basalts; Partition coefficients; Partitioning; Peridotites; Plutonic rocks; Spectroscopy; Spinel lherzolite; Ultramafics; Upper mantle; Volcanic rocks; Dona Ana County New Mexico; Europe; France; French Pyrenees; Kilbourne Hole; New Mexico; Pyrenees; United States; Western Europe
Abstract Numbers:94M/3075
Record ID:1994009556
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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