{"refrec":{"BRefID":408004,"RR":"<b>Liang, X.; Stüeken, E.E.; Alessi, D.S.; Konhauser, K.O.; Li, L.</b> (2025). A seawater oxygen oscillation recorded by iron formations prior to the Great Oxidation Event. <i>Nature Geoscience 18(5)</i>: 417-422. <a href=\"https://dx.doi.org/10.1038/s41561-025-01683-7\" target=\"_blank\">https://dx.doi.org/10.1038/s41561-025-01683-7</a>","BEntID":405805,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Nature Geoscience 18(5)</i>: 417-422. <a href=\"https://dx.doi.org/10.1038/s41561-025-01683-7\" target=\"_blank\">https://dx.doi.org/10.1038/s41561-025-01683-7</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Liang, X.; Stüeken, E.E.; Alessi, D.S.; Konhauser, K.O.; Li, L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Liang, X. <i>et al.</i>","Englishabstract":"Earth’s atmosphere underwent permanent oxidation during the Great Oxidation Event approximately 2.45–2.22 billion years ago (Ga) due to excess oxygen (O<sub>2</sub>) generated by marine cyanobacteria. However, understanding the timing and tempo of seawater oxygenation before the Great Oxidation Event has been hindered by the absence of sensitive tracers. Nitrogen (N) isotopes can be an indicator of marine oxygenation. Here we present an ~200 Myr nitrogen isotope oscillation recorded by Neoarchaean and Palaeoproterozoic banded iron formations from the Hamersley Basin, Western Australia, that were deposited in relatively deep marine shelf environments. Paired with the Jeerinah Formation shale record, our data from the Marra Mamba Iron Formation suggest that oxic conditions expanded to banded iron formation depositional environments from ~2.63 to 2.60 Ga. Subsequently, a positive δ<sup>15</sup>N excursion occurred in the ~2.48 Ga Dale Gorge Member, marking a decline in seawater O<sub>2</sub> and enhanced denitrification. This O<sub>2</sub> deficit was followed by a second phase of increasing O<sub>2</sub> levels as indicated by a gradual return to moderately positive δ<sup>15</sup>N values in the ~2.46 Ga Joffre Member and 2.45 Ga Weeli Wolli Iron Formation. These variations underscore a nonlinear history of marine oxygenation and reveal a previously unrecognized oscillation in seawater O<sub>2</sub> levels preceding the Great Oxidation Event.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"A seawater oxygen oscillation recorded by iron formations prior to the Great Oxidation Event","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-05-21 01:32:59.825686","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-05-14","DateCreate":"2025-05-14","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1038/s41561-025-01683-7"},"refs":null,"anarec":{"AnaID":408004,"PubliDate":2025,"Pagination":"417-422","XtraPublOfAnaID":null,"ISBN":null,"Volume":"18","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":123796,"SerRR":"Nature Geoscience. Nature Publishing Group: London.  ISSN 1752-0894; e-ISSN 1752-0908","StandardTitleSer":"Nature Geoscience","ISSN":"1752-0894","AbbrevSer":"Nature Geoscience","StandardTitleMon":null,"StartPage":417,"Pages":6,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Liang","Firstname":"Xueqi","Initials":"X.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":405805,"AutID":588500,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Stüeken","Firstname":"Eva","Initials":"E.E.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":405805,"AutID":532875,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Alessi","Firstname":"Daniel","Initials":"D.S.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":405805,"AutID":383863,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Konhauser","Firstname":"Kurt","Initials":"K.O.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":405805,"AutID":72276,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Li","Firstname":"Long","Initials":"L.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":405805,"AutID":449832,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0001-7763-1108","PersID":41260,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":413693,"LibID":36,"BRefID":408004,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"413693","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"<p>Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site <br />en mag op geen enkele manier verder worden verspreid.</p>","FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":null,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"Nature Publishing Group","City":"London"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":405805,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":405805,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1038/s41561-025-01683-7","externalID":"10.1038/s41561-025-01683-7","URLTypeCode":"DOI","URLID":146003,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Chisala, Chilekwa, C.","newSesDate":{"date":"2025-05-14 08:08:02.127000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Chisala, Chilekwa, C.","updSesDate":{"date":"2025-05-14 08:08:02.127000","timezone_type":3,"timezone":"Europe/Brussels"}}}