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Global Ocean Sediment Composition and Burial Flux in the Deep Sea

Hayes, Christopher T. and Costa, Kassandra M. and Anderson, Robert F. and Calvo, Eva and Chase, Zanna and Demina, Ludmila L. and Dutay, Jean-Claude and German, Christopher R. and Heimbürger-Boavida, Lars-Eric and Jaccard, Samuel L. and Jacobel, Allison and Kohfeld, Karen E. and Kravchishina, Marina D. and Lippold, Jörg and Mekik, Figen and Missiaen, Lise and Pavia, Frank J. and Paytan, Adina and Pedrosa-Pamies, Rut and Petrova, Mariia V. and Rahman, Shaily and Robinson, Laura F. and Roy-Barman, Matthieu and Sanchez-Vidal, Anna and Shiller, Alan and Tagliabue, Alessandro and Tessin, Allyson C. and Van Hulten, Marco and Zhang, Jing (2021) Global Ocean Sediment Composition and Burial Flux in the Deep Sea. Global Biogeochemical Cycles, 35 (4). Art. No. e2020GB006769. ISSN 0886-6236. doi:10.1029/2020GB006769.

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Quantitative knowledge about the burial of sedimentary components at the seafloor has wide‐ranging implications in ocean science, from global climate to continental weathering. The use of ²³⁰Th‐normalized fluxes reduces uncertainties that many prior studies faced by accounting for the effects of sediment redistribution by bottom currents and minimizing the impact of age model uncertainty. Here we employ a recently compiled global data set of ²³⁰Th‐normalized fluxes with an updated database of seafloor surface sediment composition to derive atlases of the deep‐sea burial flux of calcium carbonate, biogenic opal, total organic carbon (TOC), nonbiogenic material, iron, mercury, and excess barium (Baxs). The spatial patterns of major component burial are mainly consistent with prior work, but the new quantitative estimates allow evaluations of deep‐sea budgets. Our integrated deep‐sea burial fluxes are 136 Tg C/yr CaCO₃, 153 Tg Si/yr opal, 20Tg C/yr TOC, 220 Mg Hg/yr, and 2.6 Tg Ba_(xs)/yr. This opal flux is roughly a factor of 2 increase over previous estimates, with important implications for the global Si cycle. Sedimentary Fe fluxes reflect a mixture of sources including lithogenic material, hydrothermal inputs and authigenic phases. The fluxes of some commonly used paleo‐productivity proxies (TOC, biogenic opal, and Baxs) are not well‐correlated geographically with satellite‐based productivity estimates. Our new compilation of sedimentary fluxes provides detailed regional and global information, which will help refine the understanding of sediment preservation.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper ItemData
Hayes, Christopher T.0000-0002-5636-2989
Costa, Kassandra M.0000-0001-8715-638X
Anderson, Robert F.0000-0002-8472-2494
Calvo, Eva0000-0003-3659-4499
Chase, Zanna0000-0001-5060-779X
Demina, Ludmila L.0000-0002-7660-6151
Heimbürger-Boavida, Lars-Eric0000-0003-0632-5183
Jaccard, Samuel L.0000-0002-5793-0896
Jacobel, Allison0000-0002-1036-9026
Kohfeld, Karen E.0000-0001-7241-1624
Kravchishina, Marina D.0000-0001-9967-2891
Lippold, Jörg0000-0003-1976-5065
Mekik, Figen0000-0002-0248-9335
Missiaen, Lise0000-0002-0679-1347
Pavia, Frank J.0000-0003-3627-0179
Paytan, Adina0000-0001-8360-4712
Pedrosa-Pamies, Rut0000-0003-3504-4727
Petrova, Mariia V.0000-0001-9967-2197
Rahman, Shaily0000-0002-3912-7258
Sanchez-Vidal, Anna0000-0002-8209-1959
Shiller, Alan0000-0002-2068-7909
Tagliabue, Alessandro0000-0002-3572-3634
Tessin, Allyson C.0000-0001-8657-8484
Van Hulten, Marco0000-0002-3045-4949
Zhang, Jing0000-0002-2409-3104
Additional Information:© 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. Issue Online: 28 April 2021; Version of Record online: 28 April 2021; Accepted manuscript online: 24 March 2021; Manuscript accepted: 18 March 2021; Manuscript revised: 05 March 2021; Manuscript received: 28 July 2020. This study was supported by the Past Global Changes (PAGES) project, which in turn received support from the Swiss Academy of Sciences and the US‐NSF. The work grew out of a 2018 workshop in Aix‐Marseille, France, funded by PAGES, GEOTRACES, SCOR, US‐NSF, Aix Marseille Université, and John Cantle Scientific, and the authors would like to acknowledge all attendees of this meeting. The authors acknowledge the participants of the 68th cruise of RV Akademik Mstislav Keldysh for helping acquire samples. Christopher T. Hayes acknowledges support from US‐NSF awards 1658445 and 1737023. Some data compilation on Arctic shelf seas was supported by the Russian Science Foundation, grant number 20‐17‐00157. This work was also supported through project CRESCENDO (grant no. 641816, European Commission). Zanna Chase acknowledges support from the Australian Research Council’s Discovery Projects funding scheme (project DP180102357). Christopher R. German acknowledges US‐NSF awards 1235248 and 1234827. Some colorbars used in the figures were designed by Kristen Thyng et al. (2016) and Patrick Rafter. Two anonymous reviewers are acknowledged for constructive reviews. Data Availability Statement: The new and compiled data reported here are available at the NOAA Paleoclimatology database (
Funding AgencyGrant Number
Past Global Changes (PAGES)UNSPECIFIED
Swiss Academy of SciencesUNSPECIFIED
Scientific Committee on Oceanic Research (SCOR)UNSPECIFIED
Aix Marseille UniversitéUNSPECIFIED
John Cantle ScientificUNSPECIFIED
Russian Science Foundation20-17-00157
European Research Council (ERC)641816
Australian Research CouncilDP180102357
Subject Keywords:barium; carbon cycle; marine atlas; mercury; opal; sediment burial
Issue or Number:4
Record Number:CaltechAUTHORS:20210209-142018073
Persistent URL:
Official Citation:Hayes, C. T., Costa, K. M., Anderson, R. F., Calvo, E., Chase, Z., Demina, L. L., et al. (2021). Global ocean sediment composition and burial flux in the deep sea. Global Biogeochemical Cycles, 35, e2020GB006769.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107969
Deposited By: Tony Diaz
Deposited On:09 Feb 2021 22:46
Last Modified:30 Apr 2021 17:06

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