{"refrec":{"BRefID":350307,"RR":"<b>Giuliani, A.; Drysdale, R.N.; Woodhead, J.D.; Planavsky, N.J.; Phillips, D.; Hergt, J.; Griffin, W.L.; Oesch, S.; Dalton, H.; Davies, G.R.</b> (2022). Perturbation of the deep-Earth carbon cycle in response to the Cambrian explosion. <i>Science Advances 8(9)</i>: eabj1325. <a href=\"https://dx.doi.org/10.1126/sciadv.abj1325\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.abj1325</a>","BEntID":348003,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Science Advances 8(9)</i>: eabj1325. <a href=\"https://dx.doi.org/10.1126/sciadv.abj1325\" target=\"_blank\">https://dx.doi.org/10.1126/sciadv.abj1325</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Giuliani, A.; Drysdale, R.N.; Woodhead, J.D.; Planavsky, N.J.; Phillips, D.; Hergt, J.; Griffin, W.L.; Oesch, S.; Dalton, H.; Davies, G.R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Giuliani, A. <i>et al.</i>","Englishabstract":"Earth’s carbon cycle is strongly influenced by subduction of sedimentary material into the mantle. The composition of the sedimentary subduction flux has changed considerably over Earth’s history, but the impact of these changes on the mantle carbon cycle is unclear. Here, we show that the carbon isotopes of kimberlite magmas record a fundamental change in their deep-mantle source compositions during the Phanerozoic Eon. The <sup>13</sup>C/<sup>12</sup>C of kimberlites before ~250 Ma preserves typical mantle values, whereas younger kimberlites exhibit lower and more variable ratios—a switch coincident with a recognized surge in kimberlite magmatism. We attribute these changes to increased deep subduction of organic carbon with low <sup>13</sup>C/<sup>12</sup>C following the Cambrian Explosion when organic carbon deposition in marine sediments increased significantly. These observations demonstrate that biogeochemical processes at Earth’s surface have a profound influence on the deep mantle, revealing an integral link between the deep and shallow carbon cycles.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Perturbation of the deep-Earth carbon cycle in response to the Cambrian explosion","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":2022,"MonPub":null,"DateUpdate":"2022-03-10","DateCreate":"2022-03-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000790020300003","VABBcode":null,"OpenAcc":1,"DOI":"10.1126/sciadv.abj1325"},"refs":null,"anarec":{"AnaID":350307,"PubliDate":2022,"Pagination":"eabj1325","XtraPublOfAnaID":null,"ISBN":null,"Volume":"8","Issue":"9","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":248966,"SerRR":"Science Advances. 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