Articles | Volume 13, issue 21
Biogeosciences, 13, 6003–6014, 2016
https://doi.org/10.5194/bg-13-6003-2016
Biogeosciences, 13, 6003–6014, 2016
https://doi.org/10.5194/bg-13-6003-2016

Research article 02 Nov 2016

Research article | 02 Nov 2016

Quantifying the Cenozoic marine diatom deposition history: links to the C and Si cycles

Johan Renaudie

Data sets

Smear Slide description data National Geophysical Data Center http://www.ngdc.noaa.gov/mgg/fliers/00mgg03.html

DSDP project National Geophysical Data Center http://www.ngdc.noaa.gov/mgg/geology/odp/start.html

Janus Database OPT/TAMU Science Operator http://www-odp.tamu.edu/database/

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Short summary
Marine planktonic diatoms are today both the main silica and carbon exporter to the deep sea. However, 50 million years ago, radiolarians were the main silica exporter and diatoms were a rare, geographically restricted group. Quantification of their rise to dominance suggest that diatom abundance is primarily controlled by the continental weathering and has a negative feedback, observable on a geological timescale, on the carbon cycle.
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