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)
Descriptions
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
Metadata
MSL enriched sub domains
Source
Source publisher
| GFZ Data Services |
DOI
| 10.5880/fidgeo.2020.009 |
Creators
| Bernhardt, Anne |
| Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany | Freie Universitaet Berlin, Berlin, Germany |
| Oelze, Marcus |
| GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Bouchez, Julien |
| Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France |
| von Blanckenburg, Friedhelm |
| GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Mohtadi, Mahyar |
| MARUM Center for Marine Environmental Sciences, Bremen University, Bremen, Germany |
| Christl, Marcus |
| Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland | ETH Zurich, Zurich, Switzerland |
| Wittmann-Oelze, Hella |
| GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
Contributors
| Bernhardt, Anne |
| Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany | Freie Universitaet Berlin, Berlin, Germany |
| Bernhardt, Anne |
| Institute of Geological Sciences, Freie Universitaet Berlin, Berlin, Germany | Freie Universitaet Berlin, Berlin, Germany |
| Oelze, Marcus |
| GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Oelze, Marcus |
| GFZ German Research Centre for Geosciences, Inorganic and Isotope Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Bouchez, Julien |
| Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France |
| Bouchez, Julien |
| Institut de Physique du Globe de Paris, 1 rue Jussieu, 75238 Paris 05, France |
| von Blanckenburg, Friedhelm |
| GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Mohtadi, Mahyar |
| MARUM Center for Marine Environmental Sciences, Bremen University, Bremen, Germany |
| Christl, Marcus |
| Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland | ETH Zurich, Zurich, Switzerland |
| Christl, Marcus |
| Laboratory of Ion Beam Physics, Department of Physics, ETH Zurich, Zurich, Switzerland | ETH Zurich, Zurich, Switzerland |
| Wittmann-Oelze, Hella |
| GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
| Wittmann-Oelze, Hella |
| GFZ German Research Centre for Geosciences, Earth Surface Geochemistry, Potsdam, Germany | GFZ German Research Centre for Geosciences, Potsdam, Germany |
Citation
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
References
| URL |
| Cites |
| URL |
| Cites |
Dates
| Issued | 2020 |
Language
en
Funding References
| Funder Name | Deutsche Forschungsgemeinschaft |
| Funder Identifier | https://doi.org/10.13039/501100001659 |
| Award Number | BE 5070/2-1 |
| Award Title | Meteoric 10Be as a tracer of terrestrial denudation in marine sediments: A feasibility study offshore central Chile |
| Funder Name | Deutsche Forschungsgemeinschaft |
| Funder Identifier | https://doi.org/10.13039/501100001659 |
| Award Number | WI 3874/2-1 |
| Award Title | Meteoric 10Be as a tracer of terrestrial denudation in marine sediments: A feasibility study offshore central Chile |
Rights
| Name | CC BY 4.0 |
| URI | http://creativecommons.org/licenses/by/4.0 |