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dc.contributor.authorLongman, J
dc.contributor.authorPalmer, MR
dc.contributor.authorGernon, TM
dc.contributor.authorManners, Hayley
dc.date.accessioned2019-03-27T14:33:58Z
dc.date.issued2019-05
dc.identifier.issn0012-8252
dc.identifier.urihttp://hdl.handle.net/10026.1/13546
dc.description.abstract

Preservation of organic carbon (C org ) in marine sediments plays a major role in defining ocean-atmosphere CO 2 levels, Earth climate, and the generation of hydrocarbons. Important controls over sedimentary C org preservation include; biological productivity, C org isolation from oxidants (mainly dissolved O 2 ) in the overlying water column and sediments, and C org – mineral association in sediments. Deposition of the products of explosive volcanism (tephra) in the oceans directly enhances C org burial through all these mechanisms, and indirectly through enhanced formation of authigenic carbonate (C auth ) derived from sedimentary C org . In the modern oceans, it is suggested that tephra deposition may account for 5–10% of the C org burial flux and 10–40% of the C auth burial flux. However, during certain periods in Earth's history, extensive explosive volcanism may have led to enhanced C auth precipitation on a sufficiently large scale to influence the global ocean-atmosphere carbon cycle. Changes in tephra-related C org preservation may also have played a role in increasing C org preservation rates in local marine basins, at the oxic-anoxic boundary and enhanced the generation of hydrocarbon deposits in these settings.

dc.format.extent480-490
dc.languageen
dc.language.isoen
dc.publisherElsevier
dc.titleThe Role of Tephra in Enhancing Organic Carbon Preservation in Marine Sediments
dc.typejournal-article
dc.typeReview
dc.typeJournal
plymouth.volume192
plymouth.publication-statusPublished
plymouth.journalEarth-Science Reviews
dc.identifier.doi10.1016/j.earscirev.2019.03.018
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.dateAccepted2019-03-26
dc.rights.embargodate2019-4-17
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1016/j.earscirev.2019.03.018
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-05
rioxxterms.typeJournal Article/Review


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