{"refrec":{"BRefID":322755,"RR":"<b>Debret, B.; Reekie, C.D.J.; Mattielli, N.; Beunon, H.; Ménez, B.; Savov, I.P.; Williams, H.M.</b> (2020). Redox transfer at subduction zones: insights from Fe isotopes in the Mariana forearc. <i>Geochemical Perspectives Letters 12</i>: 46-51. <a href=\"https://dx.doi.org/10.7185/geochemlet.2003\" target=\"_blank\">https://dx.doi.org/10.7185/geochemlet.2003</a>","BEntID":316226,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Geochemical Perspectives Letters 12</i>: 46-51. <a href=\"https://dx.doi.org/10.7185/geochemlet.2003\" target=\"_blank\">https://dx.doi.org/10.7185/geochemlet.2003</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Debret, B.; Reekie, C.D.J.; Mattielli, N.; Beunon, H.; Ménez, B.; Savov, I.P.; Williams, H.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Debret, B. <i>et al.</i>","Englishabstract":"Subduction zones are active sites of chemical exchange between the Earth’s surface and deep interior and play a fundamental role in regulating planet habitability. However, the mechanisms by which redox sensitive elements (<em>e.g</em>., iron, carbon and sulfur) are cycled during subduction remains unclear. Here we use Fe stable isotopes (δ<sup>56</sup>Fe), which are sensitive to redox-related processes, to examine forearc serpentinite clasts recovered from deep sea drilling of mud volcanoes formed above the Mariana subduction zone in the Western Pacific. We show that serpentinisation of the forearc by slab-derived fluids produces dramatic δ<sup>56</sup>Fe variation. Unexpected negative correlations between serpentinite bulk δ<sup>56</sup>Fe, fluid-mobile element concentrations (<em>e.g</em>., B, As) and Fe<sup>3+</sup>/ƩFe suggest a concomitant oxidation of the mantle wedge through the transfer of isotopically light iron by slab-derived fluids. This process must reflect the transfer of either sulfate- or carbonate-bearing fluids that preferentially complex isotopically light Fe.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Redox transfer at subduction zones: insights from Fe isotopes in the Mariana forearc","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2020,"MonPub":null,"DateUpdate":"2020-04-21","DateCreate":"2020-04-07","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000516517700001","VABBcode":null,"OpenAcc":1,"DOI":"10.7185/geochemlet.2003"},"refs":null,"anarec":{"AnaID":322755,"PubliDate":2020,"Pagination":"46-51","XtraPublOfAnaID":null,"ISBN":null,"Volume":"12","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":312070,"SerRR":"Geochemical Perspectives Letters. 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