{"refrec":{"BRefID":231177,"RR":"<b>van Bentum, E.C.; Reichart, G.J.; Forster, A.; Sinninghe Damsté, J.S.S.</b> (2012). Latitudinal differences in the amplitude of the OAE-2 carbon isotopic excursion: <i>p</i>CO<sub>2</sub> and paleo productivity. <i>Biogeosciences 9(2)</i>: 717-731. <a href=\"http://dx.doi.org/10.5194/bg-9-717-2012\" target=\"_blank\">dx.doi.org/10.5194/bg-9-717-2012</a>","BEntID":222889,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Biogeosciences 9(2)</i>: 717-731. <a href=\"https://dx.doi.org/10.5194/bg-9-717-2012\" target=\"_blank\">https://dx.doi.org/10.5194/bg-9-717-2012</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"van Bentum, E.C.; Reichart, G.J.; Forster, A.; Sinninghe Damsté, J.S.S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"van Bentum, E.C. <i>et al.</i>","Englishabstract":"A complete, well-preserved record of the Cenomanian/Turonian (C/T) Oceanic Anoxic Event 2 (OAE-2) was recovered from Demerara Rise in the southern North Atlantic Ocean (ODP site 1260). Across this interval, we determined changes in the stable carbon isotopic composition of sulfur-bound phytane (delta C-13(phytane)), a biomarker for photosynthetic algae. The delta C-13(phytane) record shows a positive excursion at the onset of the OAE-2 interval, with an unusually large amplitude (similar to 7 parts per thousand) compared to existing C/T proto-North Atlantic delta C-13(phytane) records (3-6 parts per thousand). Overall, the amplitude of the excursion of delta C-13(phytane) decreases with latitude. Using reconstructed sea surface temperature (SST) gradients for the proto-North Atlantic, we investigated environmental factors influencing the latitudinal delta C-13(phytane) gradient. The observed gradient is best explained by high productivity at DSDP Site 367 and Tarfaya basin before OAE-2, which changed in overall high productivity throughout the proto-North Atlantic during OAE-2. During OAE-2, productivity at site 1260 and 603B was thus more comparable to the mid-latitude sites. Using these constraints as well as the SST and delta C-13(phytane)-records from Site 1260, we subsequently reconstructed pCO(2) levels across the OAE-2 interval. Accordingly, pCO(2) decreased from ca. 1750 to 900 ppm during OAE-2, consistent with enhanced organic matter burial resulting in lowering pCO(2). Whereas the onset of OAE-2 coincided with increased pCO(2), in line with a volcanic trigger for this event, the observed cooling within OAE-2 probably resulted from CO2 sequestration in black shales outcompeting CO2 input into the atmosphere. Together these results show that the ice-free Cretaceous world was sensitive to changes in pCO(2) related to perturbations of the global carbon cycle.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Latitudinal differences in the amplitude of the OAE-2 carbon isotopic excursion: <i>p</i>CO<sub>2</sub> and paleo productivity","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":2012,"MonPub":null,"DateUpdate":"2014-10-01","DateCreate":"2013-12-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000300877400008","VABBcode":null,"OpenAcc":1,"DOI":"10.5194/bg-9-717-2012"},"refs":null,"anarec":{"AnaID":231177,"PubliDate":2012,"Pagination":"717-731","XtraPublOfAnaID":null,"ISBN":null,"Volume":"9","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":68092,"SerRR":"<b>Gattuso, J.P.; Kesselmeier, J. (Ed.)</b> Biogeosciences. Copernicus Publications: Göttingen.  ISSN 1726-4170; e-ISSN 1726-4189","StandardTitleSer":"Biogeosciences","ISSN":"1726-4170","AbbrevSer":"Biogeosciences","StandardTitleMon":null,"StartPage":717,"Pages":15,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"van Bentum","Firstname":null,"Initials":"E.C.","Affiliation":"Utrecht University, Institute of Earth Sciences","Discriminator":null,"CorporateFlag":0,"BEntID":222889,"AutID":172138,"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":"Reichart","Firstname":null,"Initials":"G.J.","Affiliation":"Utrecht University, Institute of Earth Sciences","Discriminator":null,"CorporateFlag":0,"BEntID":222889,"AutID":172139,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0002-7256-2243","PersID":15347,"InsID":null},{"AutName":"Forster","Firstname":null,"Initials":"A.","Affiliation":"NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Organic Biogeochemistry","Discriminator":null,"CorporateFlag":0,"BEntID":222889,"AutID":172140,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"BGC","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; NIOZ Texel; Afdeling Mariene Organische Biogeochemie","ORCID":null,"PersID":null,"InsID":13083},{"AutName":"Sinninghe Damsté","Firstname":null,"Initials":"J.S.S.","Affiliation":"NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Organic Biogeochemistry","Discriminator":null,"CorporateFlag":0,"BEntID":222889,"AutID":172142,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"BGC","InsFSN":"Koninklijk Nederlands Instituut voor Onderzoek der Zee; NIOZ Texel; Afdeling Mariene Organische Biogeochemie","ORCID":"0000-0002-8683-1854","PersID":29942,"InsID":13083}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":222889,"BEntPrivate":null,"availability":[{"BInstID":256524,"LibID":2779,"BRefID":231177,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"256524","RFID":null,"PaidValue":null,"Medium":"Server","Description":null,"Acronym":null,"Library":"NIOZ","DutchTerm":null,"URL":null,"ClassifID":260,"Classification":"NIOZ Open Repository","ReqLink":null,"ClassifTypID":1,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":null,"LoggedInReq":null,"Disclaimer":"Disclaimer_NIOZ","DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":397,"FileFormID":6,"LendableFlag":null,"PublicFlag":1,"orderLib":"NIOZ","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":805,"SERpubls":[{"PublName":"Copernicus Publications","City":"Göttingen"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":{"805":{"SpName":"Koninklijk Nederlands Instituut voor Onderzoek der Zee","SpColID":805,"ParSpColID":null,"TopParID":null,"ShortName":"NIOZ","URLLocation":"https://www.vliz.be/imis/nioz/imis.php?refid=","LibID":2779,"OpenRepoFlag":1,"SpTypID":1,"TopParIDNotWebsite":null,"SpColPath":"NIOZ"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":222889,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.5194/bg-9-717-2012","externalID":"10.5194/bg-9-717-2012","URLTypeCode":"DOI","URLID":30804,"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":"Lyssens, Liesbeth, L.","newSesDate":{"date":"2013-12-01 18:55:58.187000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Leonne.van.der.Weegen@nioz.nl","updSesDate":{"date":"2014-10-01 16:34:40.313000","timezone_type":3,"timezone":"Europe/Brussels"}}}