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dc.creatorXu, Cheng
dc.creatorKynicky, Jindrich
dc.creatorTao, Renbiao
dc.creatorLiu, Xi
dc.creatorZhang, Lifei
dc.creatorPohanka, Miroslav
dc.creatorSong, Wenlei
dc.creatorFei, Yingwei
dc.date.accessioned2021-01-22T21:45:16Z
dc.date.available2021-01-22T21:45:16Z
dc.date.issued2017-04
dc.identifier.issn2375-2548
dc.identifier.issn2375-2548
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/4896
dc.identifier.otherEV7KR (isidoc)
dc.identifier.other28435871 (pubmed)
dc.identifier.urihttp://hdl.handle.net/20.500.12613/4914
dc.description.abstractMinerals recovered from the deep mantle provide a rare glimpse into deep Earth processes. We report the first discovery of ferric iron-rich majoritic garnet found as inclusions in a host garnet within an eclogite xenolith originating in the deep mantle. The composition of the host garnet indicates an ultrahigh-pressure metamorphic origin, probably at a depth of ~200 km. More importantly, the ferric iron-rich majoritic garnet inclusions show a much deeper origin, at least at a depth of 380 km. The majoritic nature of the inclusions is confirmed by mineral chemistry, x-ray diffraction, and Raman spectroscopy, and their depth of origin is constrained by a new experimental calibration. The unique relationship between the majoritic inclusions and their host garnet has important implications for mantle dynamics within the deep asthenosphere. The high ferric iron content of the inclusions provides insights into the oxidation state of the deep upper mantle.
dc.format.extente1601589-e1601589
dc.language.isoen
dc.relation.haspartSCIENCE ADVANCES
dc.relation.isreferencedbyAmerican Association for the Advancement of Science (AAAS)
dc.rightsCC BY-NC
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectMantle petrology
dc.subjecteclogite xenoliths
dc.subjecthigh-pressure experiment
dc.subjectmantle asthenosphere
dc.subjectmantle convection
dc.subjectmantle majorite
dc.titleRecovery of an oxidized majorite inclusion from Earth's deep asthenosphere
dc.typeArticle
dc.type.genreJournal Article
dc.relation.doi10.1126/sciadv.1601589
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.creator.orcidTao, Rongjia|0000-0001-5058-4401
dc.date.updated2021-01-22T21:45:13Z
refterms.dateFOA2021-01-22T21:45:17Z


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