A long-term record of early to mid-Paleozoic marine redox change

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dc.contributor.authorSperling, Erik A.en
dc.contributor.authorMelchin, Michael J.en
dc.contributor.authorFraser, Tiffanien
dc.contributor.authorStockey, Richard G.en
dc.contributor.authorFarrell, Una C.en
dc.contributor.authorBhajan, Liamen
dc.contributor.authorBrunoir, Tessa N.en
dc.contributor.authorCole, Devon B.en
dc.contributor.authorGill, Benjamin C.en
dc.contributor.authorLenz, Alfreden
dc.contributor.authorLoydell, David K.en
dc.contributor.authorMalinowski, Josephen
dc.contributor.authorMiller, Austin J.en
dc.contributor.authorPlaza-Torres, Stephanieen
dc.contributor.authorBock, Beatriceen
dc.contributor.authorRooney, Alan D.en
dc.contributor.authorTecklenburg, Sabrina A.en
dc.contributor.authorVogel, Jacqueline M.en
dc.contributor.authorPlanavsky, Noah J.en
dc.contributor.authorStrauss, Justinen
dc.contributor.departmentGeosciencesen
dc.date.accessioned2021-08-04T19:06:42Zen
dc.date.available2021-08-04T19:06:42Zen
dc.date.issued2021-07-01en
dc.date.updated2021-08-04T19:06:37Zen
dc.description.abstractThe extent to which Paleozoic oceans differed from Neoproterozoic oceans and the causal relationship between biological evolution and changing environmental conditions are heavily debated. Here, we report a nearly continuous record of seafloor redox change from the deep-water upper Cambrian to Middle Devonian Road River Group of Yukon, Canada. Bottom waters were largely anoxic in the Richardson trough during the entirety of Road River Group deposition, while independent evidence from iron speciation and Mo/U ratios show that the biogeochemical nature of anoxia changed through time. Both in Yukon and globally, Ordovician through Early Devonian anoxic waters were broadly ferruginous (nonsulfidic), with a transition toward more euxinic (sulfidic) conditions in the mid–Early Devonian (Pragian), coincident with the early diversification of vascular plants and disappearance of graptolites. This ~80-million-year interval of the Paleozoic characterized by widespread ferruginous bottom waters represents a persistence of Neoproterozoic-like marine redox conditions well into the Phanerozoic.en
dc.description.versionPublished versionen
dc.format.extent12 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifierARTN eabf4382 (Article number)en
dc.identifier.doihttps://doi.org/10.1126/sciadv.abf4382en
dc.identifier.eissn2375-2548en
dc.identifier.issn2375-2548en
dc.identifier.issue28en
dc.identifier.orcidGill, Benjamin [0000-0001-7402-0811]en
dc.identifier.other7/28/eabf4382 (PII)en
dc.identifier.pmid34233874 (pubmed)en
dc.identifier.urihttp://hdl.handle.net/10919/104575en
dc.identifier.volume7en
dc.language.isoenen
dc.publisherAAASen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000670435700007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectNEW-YORK-STATEen
dc.subjectBLACK SHALESen
dc.subjectLATE ORDOVICIANen
dc.subjectFERRUGINOUS CONDITIONSen
dc.subjectATMOSPHERIC OXYGENen
dc.subjectGRAPTOLITE BIOSTRATIGRAPHYen
dc.subjectDEPOSITIONAL ENVIRONMENTen
dc.subjectGEOCHEMICAL EVIDENCEen
dc.subjectSEAWATER CHEMISTRYen
dc.subjectNORTHERN YUKONen
dc.titleA long-term record of early to mid-Paleozoic marine redox changeen
dc.title.serialScience Advancesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
dcterms.dateAccepted2021-05-25en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Tech/Science/Geosciencesen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen

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