Journal ArticleDOI
Experimentally determined trace and minor element partitioning between clinopyroxene and carbonatite melt under upper mantle conditions
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TLDR
In this article, laser ablation microprobe analyses of clinopyroxenes equilibrated with carbonatite melt at 20-22 kbar and 1050-1100°C are used to calculate partition coefficients for an extensive suite of trace elements.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1995-07-01. It has received 183 citations till now. The article focuses on the topics: Metasomatism & Silicate.read more
Citations
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Carbonatite Metasomatism of the Oceanic Upper Mantle: Evidence from Clinopyroxenes and Glasses in Ultramafic Xenoliths of Grande Comore, Indian Ocean
TL;DR: Petrological and geochemical data for a suite of brought down in a subducting slab at a former convergent plate ultramafic xenoliths (lherzolites and wehrlites) from La Grille margin is presented in this article.
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Recycled metasomatized lithosphere as the origin of the Enriched Mantle II (EM2) end‐member: Evidence from the Samoan Volcanic Chain
R. Workman,Stanley R. Hart,Matthew G. Jackson,Marcel Regelous,Kenneth A. Farley,Jerzy S. Blusztajn,Mark D. Kurz,Hubert Staudigel +7 more
TL;DR: An in-depth analysis of the EMII-defining Samoan hot spot lavas leads to a new working hypothesis for the origin of this high 87Sr/86Sr mantle end-member as discussed by the authors.
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Carbonatite metasomatism in the southeastern Australian lithosphere
TL;DR: In this article, a suite of glass +/- apatite +/- amphibole +/- phlogopite +/- carbonate-bearing spinel wehrlite, lherzolite and harzburgite xenoliths from the Newer Volcanics, southeastern Australia, are consistent with metasomatic interactions between harzbergitic or refractory lherzholitic lithosphere, and penetrative sodic dolomitic carbonatite melts.
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Mechanism and timing of lithospheric modification and replacement beneath the eastern North China Craton: Peridotitic xenoliths from the 100 Ma Fuxin basalts and a regional synthesis
Jianping Zheng,Jianping Zheng,William L. Griffin,Suzanne Y. O'Reilly,Chunmei Yu,Hong-Fu Zhang,Norman J. Pearson,Ming Zhang +7 more
TL;DR: In this paper, peridotitic xenoliths from the Cretaceous (∼100 ǫ) Fuxin basalts at the northern edge of the craton have been integrated with data from other localities across the region to provide an overview of the processes involved.
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The composition of near-solidus melts of peridotite in the presence of CO2 and H2O between 40 and 60 kbar
Stephen F. Foley,Gregory M. Yaxley,Anja Rosenthal,Stephan Buhre,Ekaterina S. Kiseeva,Robert P. Rapp,Dorrit E. Jacob +6 more
TL;DR: Partial melting experiments at 40, 50 and 60 kbar pressure on three peridotite compositions with 0.5, 0.63 and 0.2% CO2 added indicate melting temperatures only marginally above continental geotherms as mentioned in this paper.
References
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Chemical and isotopic systematics of oceanic basalt : implications for mantle composition and processes
TL;DR: In this article, trace-element data for mid-ocean ridge basalts and ocean island basalts are used to formulate chemical systematics for oceanic basalts, interpreted in terms of partial-melting conditions, variations in residual mineralogy, involvement of subducted sediment, recycling of oceanic lithosphere and processes within the low velocity zone.
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Chemical and isotopic systematics of oceanic basalts. Implications for Mantle Composition and Processes
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Experimental cpx/melt partitioning of 24 trace elements
Stanley R. Hart,Todd Dunn +1 more
TL;DR: In this paper, the ion probe for 24 trace elements at natural levels in an alkali basalt experimentally equilibrated at 1,380°C and 3 GPa.
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Melting of a dry peridotite KLB‐1 up to 14 GPa: Implications on the Origin of peridotitic upper mantle
TL;DR: In this paper, a diapiric model was proposed for the genesis of komatiite magma by partial melting of mantle peridotite at 150-200 km depth.