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dc.contributor.authorHolland, Timothyen
dc.contributor.authorGreen, ECRen
dc.contributor.authorPowell, Ren
dc.date.accessioned2018-08-20T12:10:20Z
dc.date.available2018-08-20T12:10:20Z
dc.date.issued2018-01-01en
dc.identifier.issn0022-3530
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/278958
dc.description.abstractA new set of thermodynamic models is presented for calculating phase relations in bulk compositions extending from peridotite to granite, from 0.001 to 70 kbar and from 650 °C to peridotite liquidus temperatures, in the system K 2 O–Na 2 O–CaO–FeO–MgO–Al 2 O 3 –SiO 2 –H 2 O–TiO 2 –Fe 2 O 3 –Cr 2 O 3 (KNCFMASHTOCr). The models may be used to calculate phase equilibria in partial melting of a large range of mantle and crustal compositions. They provide a good fit to experimental phase relation topologies and melt compositions across the compositional range of the model. Compared with the preliminary model of Jennings & Holland (2015) for peridotite–basalt melting relations, the inclusion of K 2 O and TiO 2 allows for better modelling of small melt fractions in peridotite melting, and in reproducing rutile-bearing eclogite melting at high pressures. An improved order–disorder model for spinel is now incorporated. Above 10 kbar pressure, wet partial melting relations may be significantly affected by the dissolution of silicates in aqueous fluid, so the set of models includes an aqueous low-density silicate-bearing fluid in addition to a high-density H 2 O-bearing silicate melt. Oxygen fugacity may be readily calculated for the whole range of bulk compositions investigated, and the effect of water content on melt fO 2 is assessed.
dc.description.sponsorshipNatural Environment Research Council grant (NE/ J021539/1)
dc.publisherOUP
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleMelting of peridotites through to granites: A simple thermodynamic model in the system KNCFMASHTOCren
dc.typeArticle
prism.endingPage900
prism.issueIdentifier5en
prism.publicationDate2018en
prism.publicationNameJournal of Petrologyen
prism.startingPage881
prism.volume59en
dc.identifier.doi10.17863/CAM.26340
dcterms.dateAccepted2018-05-01en
rioxxterms.versionofrecord10.1093/petrology/egy048en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-01-01en
dc.identifier.eissn1460-2415
rioxxterms.typeJournal Article/Reviewen
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International