{"refrec":{"BRefID":211456,"RR":"<b>Diester-Haass, L.; Billups, K.; Grocke, D.R.; François, L.; Lefebvre, V.; Emeis, K.C.</b> (2009). Mid-Miocene paleoproductivity in the Atlantic Ocean and implications for the global carbon cycle. <i>Paleoceanography 24</i>. <a href=\"http://dx.doi.org/10.1029/2008PA001605\" target=\"_blank\">dx.doi.org/10.1029/2008PA001605</a>","BEntID":203378,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Paleoceanography 24</i>. <a href=\"https://dx.doi.org/10.1029/2008PA001605\" target=\"_blank\">https://dx.doi.org/10.1029/2008PA001605</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Diester-Haass, L.; Billups, K.; Grocke, D.R.; François, L.; Lefebvre, V.; Emeis, K.C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Diester-Haass, L. <i>et al.</i>","Englishabstract":"A prominent, middle Miocene (17.5–13.5 Ma) carbon isotope excursion ubiquitously recorded in carbonate sediments has been attributed to enhanced marine productivity and sequestration of <sup>13</sup>C depleted organic carbon in marine sediments or enhanced carbon burial in peat/lignite deposits on land. Here we test the hypothesis that the marine d<sup> 13</sup>C record reflects a change in productivity with proxy records from three Atlantic Ocean sites (Deep Sea Drilling Program Site 608 and Ocean Drilling Program Sites 925 and 1265). Our multiproxy approach is based on benthic foraminiferal accumulation rates, elemental ratios (Ba/Al and P/Al), the d<sup> 13</sup>C of bulk sedimentary organic matter, and dissolution indices. We compare these proxies to benthic foraminiferal d <sup>13</sup>C values measured on the same samples. Our results indicate that marine paleoproductivity in the Atlantic Ocean is not related to the benthic foraminiferal d <sup>13</sup>C excursion. A numerical box model confirms that marine productivity cannot account for the d <sup>13</sup>C maximum. The model shows that sequestration of 1.5 × 10<sup>18</sup> mol C in the terrestrial realm over a period of 3 Ma leads to a 0.9‰ d <sup>13</sup>C increase in the deep ocean, which is near the observed records. Therefore, an increase in continental organic carbon sequestration is the most plausible way to enrich the ocean's carbon pool with <sup>13</sup>C, which is consistent with coeval lignite deposits worldwide. The d <sup>13</sup>C values of bulk sedimentary organic matter parallel the d<sup> 13</sup>C of dissolved inorganic carbon as reflected by benthic foraminiferal d<sup> 13</sup>C values suggesting no significant change in atmospheric <i>p</i>CO<sub>2</sub> levels over the investigated period.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Mid-Miocene paleoproductivity in the Atlantic Ocean and implications for the global carbon cycle","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":2009,"MonPub":null,"DateUpdate":"2012-01-30","DateCreate":"2011-12-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000263615100002","VABBcode":null,"OpenAcc":0,"DOI":"10.1029/2008PA001605"},"refs":null,"anarec":{"AnaID":211456,"PubliDate":2009,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"24","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45633,"SerRR":"Paleoceanography. American Geophysical Union: Washington, DC.  ISSN 0883-8305; e-ISSN 1944-9186","StandardTitleSer":"Paleoceanography","ISSN":"0883-8305","AbbrevSer":"Paleoceanography","StandardTitleMon":null,"StartPage":null,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Diester-Haass","Firstname":null,"Initials":"L.","Affiliation":"Univ Saarland, Zentrum Umweltwissensch, D-66041","Discriminator":null,"CorporateFlag":0,"BEntID":203378,"AutID":141013,"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":"Billups","Firstname":null,"Initials":"K.","Affiliation":"Univ Delaware, Coll Marine & Earth Studies, Lewes, DE 19958 USA.","Discriminator":null,"CorporateFlag":0,"BEntID":203378,"AutID":141014,"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":"Grocke","Firstname":null,"Initials":"D.R.","Affiliation":"Univ Durham, Dept Earth Sci, Sci Labs, Durham DH1 3LE, England.","Discriminator":null,"CorporateFlag":0,"BEntID":203378,"AutID":141015,"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":"François","Firstname":"Louis","Initials":"L.","Affiliation":"Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium.","Discriminator":null,"CorporateFlag":0,"BEntID":203378,"AutID":141016,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AGO","InsFSN":"Université de Liège; 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