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Data Publication
Sediment geochemistry data for the publication: “10Be/9Be ratios reveal marine authigenic clay formation”
Bernhardt, Anne | Oelze, Marcus | Bouchez, Julien | von Blanckenburg, Friedhelm | Mohtadi, Mahyar | Christl, Marcus | Wittmann-Oelze, Hella
GFZ Data Services
(2020)
As reverse weathering has been shown to impact long-term changes in atmospheric CO2 levels, it is crucial to develop quantitative tools to reconstruct marine authigenic clay formation. We explored the potential of the beryllium (Be) isotope ratio (10Be/9Be) recorded in marine clay-sized sediment to track neoformation of authigenic clays. The power of such proxy relies on the orders-of-magnitude difference in 10Be/9Be ratios between continental Be and Be dissolved in seawater. On riverine and marine sediments collected along a Chilean margin transect we chemically extracted reactive phases and separated the clay-sized sediment fraction. We compare the riverine and marine 10Be/9Be ratio of this fraction. Moreover, we compare the elemental and mineralogical composition and the Nd and Sr-isotopic composition of these samples. 10Be/9Be ratios increase four-fold from riverine to marine sediment. We attribute this increase to the incorporation of Be high in 10Be/9Be from dissolved biogenic opal, which also serves as a Si-source for the precipitation of marine authigenic clays. 10Be/9Be ratios thus sensitively track reverse-weathering reactions forming marine authigenic clays.
Keywords
Originally assigned keywords
Corresponding MSL vocabulary keywords
MSL enriched keywords
MSL enriched sub domains i
Source publisher
GFZ Data Services
DOI
10.5880/fidgeo.2020.009
Authors
Bernhardt, Anne
0000-0002-2584-511X
Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany; Freie Universitaet Berlin, Berlin, Germany;
Oelze, Marcus
0000-0002-3950-6629
GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Bouchez, Julien
0000-0003-4832-1615
Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France;
von Blanckenburg, Friedhelm
0000-0002-2964-717X
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Mohtadi, Mahyar
0000-0003-3306-0969
MARUM Center for Marine Environmental Sciences, Bremen University, Bremen, Germany;
Christl, Marcus
0000-0002-3950-6629
Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland; ETH Zurich, Zurich, Switzerland;
Wittmann-Oelze, Hella
0000-0002-1252-705
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Contributers
Bernhardt, Anne
ContactPerson
0000-0002-2584-511X
Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany; Freie Universitaet Berlin, Berlin, Germany;
Bernhardt, Anne
Researcher
0000-0002-2584-511X
Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany; Freie Universitaet Berlin, Berlin, Germany;
Oelze, Marcus
DataCollector
0000-0002-3950-6629
GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Oelze, Marcus
Researcher
0000-0002-3950-6629
GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Bouchez, Julien
Researcher
0000-0003-4832-1615
Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France;
Bouchez, Julien
DataCollector
0000-0003-4832-1615
Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France;
von Blanckenburg, Friedhelm
Researcher
0000-0002-2964-717X
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Mohtadi, Mahyar
Researcher
0000-0003-3306-0969
MARUM Center for Marine Environmental Sciences, Bremen University, Bremen, Germany;
Christl, Marcus
Researcher
0000-0002-3950-6629
Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland; ETH Zurich, Zurich, Switzerland;
Christl, Marcus
DataCollector
0000-0002-3950-6629
Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland; ETH Zurich, Zurich, Switzerland;
Wittmann-Oelze, Hella
Researcher
0000-0002-1252-705
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Wittmann-Oelze, Hella
DataCollector
0000-0002-1252-705
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
References
Wittmann, H., von Blanckenburg, F., Mohtadi, M., Christl, M., & Bernhardt, A. (2017). The competition between coastal trace metal fluxes and oceanic mixing from the 10Be/9Be ratio: Implications for sedimentary records. Geophysical Research Letters, 44(16), 8443–8452. Portico. https://doi.org/10.1002/2017gl074259
10.1002/2017GL074259
Continues
Bernhardt, A., Oelze, M., Bouchez, J., von Blanckenburg, F., Mohtadi, M., Christl, M., & Wittmann, H. (2020). 10Be/9Be Ratios Reveal Marine Authigenic Clay Formation. Geophysical Research Letters, 47(4). Portico. https://doi.org/10.1029/2019gl086061
10.1029/2019GL086061
IsSupplementTo
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10.1130/G37594.1
Cites
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Cites
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Cites
Wittmann, H., von Blanckenburg, F., Mohtadi, M., Christl, M., & Bernhardt, A. (2017). The competition between coastal trace metal fluxes and oceanic mixing from the 10Be/9Be ratio: Implications for sedimentary records. Geophysical Research Letters, 44(16), 8443–8452. Portico. https://doi.org/10.1002/2017gl074259
10.1002/2017GL074259
Cites
Contact
Wittmann-Oelze, Hella
GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Citiation
Bernhardt, A., Oelze, M., Bouchez, J., von Blanckenburg, F., Mohtadi, M., Christl, M., & Wittmann-Oelze, H. (2020). Sediment geochemistry data for the publication: “10Be/9Be ratios reveal marine authigenic clay formation” [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2020.009