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dc.contributor.authorLongman, J
dc.contributor.authorGernon, T
dc.contributor.authorPalmer, M
dc.contributor.authorManners, H
dc.date.accessioned2021-10-19T16:30:03Z
dc.date.issued2021-11
dc.identifier.issn0886-6236
dc.identifier.issn1944-9224
dc.identifier.othere2021GB007140
dc.identifier.urihttp://hdl.handle.net/10026.1/18129
dc.description.abstract

<jats:title>Abstract</jats:title><jats:p>Preservation of organic carbon (OC) in marine sediments exerts a major control on the cycling of carbon in the Earth system. In these marine environments, OC preservation may be enhanced by diagenetic reactions in locations where deposition of fragmental volcanic material called tephra occurs. While the mechanisms by which this process occurs are well understood, site‐specific studies of this process are limited. Here, we report a study of sediments from the Bering Sea (IODP Site U1339D) to investigate the effects of marine tephra deposition on carbon cycling during the Pleistocene and Holocene. Our results suggest that tephra layers are loci of OC burial with distinct δ<jats:sup>13</jats:sup>C values, and that this process is primarily linked to bonding of OC with reactive metals, accounting for ∼80% of all OC within tephra layers. In addition, distribution of reactive metals from the tephra into non‐volcanic sediments above and below the tephra layers enhances OC preservation in these sediments, with ∼33% of OC bound to reactive phases. Importantly, OC‐Fe coupling is evident in sediments &gt;700,000 years old. Thus, these interactions may help explain the observed preservation of OC in ancient marine sediments.</jats:p>

dc.languageen
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.subjecttephra
dc.subjectcarbon burial
dc.subjectreactive Fe
dc.subjectorganic carbon
dc.subjectcarbon preservation
dc.subjectvolcanism
dc.titleTephra deposition and bonding with reactive oxides enhances burial of organic carbon in the Bering Sea
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000723020500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue11
plymouth.volume35
plymouth.publication-statusPublished
plymouth.journalGlobal Biogeochemical Cycles: an international journal of global change
dc.identifier.doi10.1029/2021GB007140
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dcterms.dateAccepted2021-10-19
dc.rights.embargodate2021-11-10
dc.identifier.eissn1944-9224
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1029/2021GB007140
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2021-11
rioxxterms.typeJournal Article/Review


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