{"refrec":{"BRefID":337669,"RR":"<b>Cui, H.; Warren, L.V.; Uhlein, G.J.; Okubo, J.; Liu, X.-M.; Plummer, R.E.; Baele, J.-M.; Goderis, S.; Claeys, P.; Li, F.</b> (2020). Global or regional? Constraining the origins of the middle Bambui carbon cycle anomaly in Brazil. <i>Precambr. Res. 348</i>: 105861. <a href=\"https://hdl.handle.net/10.1016/j.precamres.2020.105861\" target=\"_blank\">https://hdl.handle.net/10.1016/j.precamres.2020.105861</a>","BEntID":334293,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Precambr. Res. 348</i>: 105861. <a href=\"https://hdl.handle.net/10.1016/j.precamres.2020.105861\" target=\"_blank\">https://hdl.handle.net/10.1016/j.precamres.2020.105861</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Cui, H.; Warren, L.V.; Uhlein, G.J.; Okubo, J.; Liu, X.-M.; Plummer, R.E.; Baele, J.-M.; Goderis, S.; Claeys, P.; Li, F.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Cui, H. <i>et al.</i>","Englishabstract":"The Ediacaran-Cambrian Bambuí Group in Brazil records an anomalously positive excursion in carbonate carbon isotopes (δ<sup>13</sup>C<sub>carb</sub>) with a sustained plateau of ca. +15‰ (aka the Middle Bambuí Excursion–MIBE). Considering that the δ<sup>13</sup>C<sub>carb</sub> signals in Ediacaran-Cambrian seawaters do not typically exceed +6‰, the MIBE therefore represents a profound carbon cycle anomaly in Earth’s history. Although intensive studies have been done on the Bambuí Group, origins of the MIBE remain enigmatic. In order to better constrain the biogeochemical carbon and sulfur cycles during the MIBE, high-resolution chemostratigraphic analysis was conducted for both the plateau (i.e., Lagoa do Jacaré Formation) and the recovery part (i.e., lower Serra da Saudade Formation) of the MIBE. Chemostratigraphic profiles reveal remarkably different values in δ<sup>13</sup>C<sub>carb</sub>, δ<sup>13</sup>C<sub>org</sub>, δ<sup>18</sup>O<sub>carb</sub>, and δ<sup>34</sup>S<sub>pyrite</sub> between these two studied MIBE intervals. The new data show that the plateau of the MIBE is characterized by coupled higher δ<sup>13</sup>C<sub>carb</sub>, higher δ<sup>13</sup>C<sub>org,</sub> and higher δ<sup>34</sup>S<sub>pyrite</sub> signals compared with the recovery part of the MIBE. Based on multiple lines of sedimentological, geochemical, and model evidence, we propose that the possibilities of enhanced organic carbon burial and porewater methanogenesis are insufficient to explain the MIBE. Instead, local or regional controlling factors, including water-column methanogenesis, low-sulfate conditions, and enhanced carbonate recycling in a restricted basin may have played a role, independently or in unison, in generating this profound positive δ<sup>13</sup>C<sub>carb</sub> excursion. Therefore, the MIBE may reflect a regional event, instead of a global carbon cycle anomaly. We caution against the use of the MIBE in chemostratigraphic correlations on a global scale or any other attempt to infer global carbon cycling at that time. The biogeochemical landscape of the late Ediacaran-Cambrian basins and ocean margins may be more heterogeneous than previously thought.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Global or regional? Constraining the origins of the middle Bambui carbon cycle anomaly in Brazil","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-31 01:31:53.993187","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Middle Bambuf Excursion (MIRE); Carbon cycle; Sulfur cycle;Neoproterozoic; Chemostratigraphy; Biogeochemistry; Methanogenesis; Diagenesis; Geobiology; Ediacaran-Cambrian transition","OtherDescriptors":null,"Notes":null,"AnaPub":2020,"MonPub":null,"DateUpdate":"2021-05-29","DateCreate":"2021-05-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000567091500008","VABBcode":null,"OpenAcc":0,"Handle":"10.1016/j.precamres.2020.105861"},"refs":null,"anarec":{"AnaID":337669,"PubliDate":2020,"Pagination":"105861","XtraPublOfAnaID":null,"ISBN":null,"Volume":"348","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43647,"SerRR":"Precambrian research. ELSEVIER SCIENCE BV: Amsterdam; London; New York; Oxford; Tokyo.  ISSN 0301-9268; e-ISSN 1872-7433","StandardTitleSer":"Precambrian research","ISSN":"0301-9268","AbbrevSer":"Precambr. Res.","StandardTitleMon":null,"StartPage":23,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Cui","Firstname":"Huan","Initials":"H.","Affiliation":"Analytical, Environmental and Geo- Chemistry Group, Vrije Universiteit Brussel","Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":449319,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AMGC","InsFSN":"Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Chemie; Analytical, Environmental and Geochemistry","ORCID":"0000-0003-0705-3423","PersID":38807,"InsID":40},{"AutName":"Warren","Firstname":"Lucas","Initials":"L.V.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":236032,"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":"Uhlein","Firstname":"Gabriel","Initials":"G.J.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":449322,"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":"Okubo","Firstname":"Juliana","Initials":"J.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":449323,"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":"Liu","Firstname":"Xiao-Ming","Initials":"X.-M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":449324,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Plummer","Firstname":"Rebecca","Initials":"R.E.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":407506,"OrderNr":6,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Baele","Firstname":"Jean-Marc","Initials":"J.-M.","Affiliation":"Department of Geology, Faculty of Engineering, University of Mons","Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":454942,"OrderNr":7,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Mons; Faculté Polytechnique; Service de géologie fondamentale et appliquée","ORCID":"0000-0002-8709-6249","PersID":34893,"InsID":13967},{"AutName":"Goderis","Firstname":"Steven","Initials":"S.","Affiliation":"Analytical, Environmental and Geo- Chemistry Group, Vrije Universiteit Brussel","Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":454943,"OrderNr":8,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AMGC","InsFSN":"Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Chemie; Analytical, Environmental and Geochemistry","ORCID":"0000-0002-6666-7153","PersID":18615,"InsID":40},{"AutName":"Claeys","Firstname":"Philippe","Initials":"P.","Affiliation":"Analytical, Environmental and Geo- Chemistry Group, Vrije Universiteit Brussel","Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":449329,"OrderNr":9,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AMGC","InsFSN":"Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Chemie; Analytical, Environmental and Geochemistry","ORCID":"0000-0002-4585-7687","PersID":12178,"InsID":40},{"AutName":"Li","Firstname":"Fei","Initials":"F.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":334293,"AutID":454944,"OrderNr":10,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":361799,"LibID":36,"BRefID":337669,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"361799","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":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"ELSEVIER SCIENCE BV","City":"Amsterdam; London; New York; Oxford; Tokyo"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":{"222":{"SpName":"BMB - Belgische Mariene Bibliografie","SpColID":222,"ParSpColID":null,"TopParID":null,"ShortName":"BMB","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"BMB"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":334293,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":334293,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://hdl.handle.net/10.1016/j.precamres.2020.105861","externalID":"10.1016/j.precamres.2020.105861","URLTypeCode":"Handle","URLID":93333,"URLTypID":32,"URLType":"Handle","URLPrefix":"https://hdl.handle.net/"}],"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":"Bouchti, Zohra, Z.","newSesDate":{"date":"2021-05-17 16:42:41.567000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Bouchti, Zohra, Z.","updSesDate":{"date":"2021-05-29 16:03:38.300000","timezone_type":3,"timezone":"Europe/Brussels"}}}