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Data Publication
A global database of radiogenic Nd and Sr isotopes in marine and terrestrial samples
Blanchet, Cécile L.
GFZ Data Services
(2018)
The database presented here contains radiogenic neodymium and strontium isotope ratios measured on both terrestrial and marine sediments. It was compiled to help assessing sediment provenance and transport processes for various time intervals. This can be achieved by either mapping sediment isotopic signature and/or fingerprinting source areas using statistical tools (see supplemental references). The database has been built by incorporating data from the literature and the SedDB database and harmonizing the metadata, especially units and geographical coordinates. The original data were processed in three steps. Firstly, a specific attention has been devoted to provide geographical coordinates to each sample in order to be able to map the data. When available, the original geographical coordinates from the reference (generally DMS coordinates, with different precision standard) were transferred into the decimal degrees system. When coordinates were not provided, an approximate location was derived from available information in the original publication. Secondly, all samples were assigned a set of standardized criteria that help splitting the dataset in specific categories. We defined categories associated with the sample location ("Region", "Sub-region", "Location", which relate to location at continental to city/river scale) or with the sample types (terrestrial samples – “aerosols”, “soil sediments”, “river sediments” - or marine samples –“marine sediment” or “trap sample”). Thirdly, samples were discriminated according to their deposition age, which allowed to compute average values for specific time intervals (see attached table "Age_determination_Sediment_Cores.csv"). The dataset will be updated bi-annually and might be extended to reach a global geographical extent and/or add other type of samples. This dataset contains two csv tables: "Dataset_Nd_Sr_isotopes.csv" and "Age_determination_Sediment_Cores.csv". "Dataset_Nd_Sr_isotopes.csv" contains the assembled dataset of marine and terrestrial Nd and/or Sr concentration and isotopes, together with sorting criteria and geographical locations. "Age_determination_Sediment_Cores.csv" contains all background information concerning the determination of the isotopic signature of specific time intervals (depth interval, number of samples, mean and standard deviation). Column headers are explained in respective metadata comma-separated files. A human readable data description is provided in portable document format, as well. Finally, R code for mapping the data and running statistical analyses is also available for this dataset (see supplemental references).
Keywords
Originally assigned keywords
Corresponding MSL vocabulary keywords
MSL enriched keywords
MSL enriched sub domains i
Source publisher
GFZ Data Services
DOI
10.5880/gfz.5.2.2018.001
Authors
Blanchet, Cécile L.
0000-0002-7146-705X
GFZ German Research Centre for Geosciences, Potsdam, Germany;
Contributers
Blanchet, Cécile L.
ContactPerson
0000-0002-7146-705X
GFZ German Research Centre for Geosciences, Potsdam, Germany;
Blanchet, Cécile L.
DataCurator
0000-0002-7146-705X
GFZ German Research Centre for Geosciences, Potsdam, Germany;
Blanchet, Cécile L.
DataCollector
0000-0002-7146-705X
GFZ German Research Centre for Geosciences, Potsdam, Germany;
References
Abouchami, W., Näthe, K., Kumar, A., Galer, S. J. G., Jochum, K. P., Williams, E., Horbe, A. M. C., Rosa, J. W. C., Balsam, W., Adams, D., Mezger, K., & Andreae, M. O. (2013). Geochemical and isotopic characterization of the Bodélé Depression dust source and implications for transatlantic dust transport to the Amazon Basin. Earth and Planetary Science Letters, 380, 112–123. https://doi.org/10.1016/j.epsl.2013.08.028
10.1016/j.epsl.2013.08.028
Cites
Blanchet, C. (2018). <i>R Code for mapping (contour maps) the Nd and Sr isotopic signature of marine and terrestrial sediments</i>. figshare. https://doi.org/10.6084/M9.FIGSHARE.6990161.V3
10.6084/m9.figshare.6990161.v3
IsSupplementedBy
Blanchet, C. (2018). <i>R Code for plotting statistical parameters of Nd and Sr isotopic signature of Potential Source Areas</i>. figshare. https://doi.org/10.6084/M9.FIGSHARE.6990260.V3
10.6084/m9.figshare.6990260.v3
IsSupplementedBy
Bayon, G., Burton, K. W., Soulet, G., Vigier, N., Dennielou, B., Etoubleau, J., Ponzevera, E., German, C. R., & Nesbitt, R. W. (2009). Hf and Nd isotopes in marine sediments: Constraints on global silicate weathering. Earth and Planetary Science Letters, 277(3–4), 318–326. https://doi.org/10.1016/j.epsl.2008.10.028
10.1016/j.epsl.2008.10.028
Cites
Bayon, G., Toucanne, S., Skonieczny, C., André, L., Bermell, S., Cheron, S., Dennielou, B., Etoubleau, J., Freslon, N., Gauchery, T., Germain, Y., Jorry, S. J., Ménot, G., Monin, L., Ponzevera, E., Rouget, M.-L., Tachikawa, K., & Barrat, J. A. (2015). Rare earth elements and neodymium isotopes in world river sediments revisited. Geochimica et Cosmochimica Acta, 170, 17–38. https://doi.org/10.1016/j.gca.2015.08.001
10.1016/j.gca.2015.08.001
Cites
Blanchet, C. L., Frank, M., & Schouten, S. (2014). Asynchronous Changes in Vegetation, Runoff and Erosion in the Nile River Watershed during the Holocene. PLoS ONE, 9(12), e115958. https://doi.org/10.1371/journal.pone.0115958
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Cites
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Cites
Castañeda, I. S., Schouten, S., Pätzold, J., Lucassen, F., Kasemann, S., Kuhlmann, H., & Schefuß, E. (2016). Hydroclimate variability in the Nile River Basin during the past 28,000 years. Earth and Planetary Science Letters, 438, 47–56. https://doi.org/10.1016/j.epsl.2015.12.014
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Cites
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Cites
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Cites
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Cites
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Cites
Franzese, A. M., Hemming, S. R., & Goldstein, S. L. (2009). Use of strontium isotopes in detrital sediments to constrain the glacial position of the Agulhas Retroflection. Paleoceanography, 24(2). Portico. https://doi.org/10.1029/2008pa001706
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Cites
Freydier, R., Michard, A., De Lange, G., & Thomson, J. (2001). Nd isotopic compositions of Eastern Mediterranean sediments: tracers of the Nile influence during sapropel S1 formation? Marine Geology, 177(1–2), 45–62. https://doi.org/10.1016/s0025-3227(01)00123-2
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Cites
Frost, C. D., O’Nions, R. K., & Goldstein, S. L. (1986). Mass balance for Nd in the Mediterranean Sea. Chemical Geology, 55(1–2), 45–50. https://doi.org/10.1016/0009-2541(86)90126-9
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Cites
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Cites
Grousset, F. E., & Biscaye, P. E. (2005). Tracing dust sources and transport patterns using Sr, Nd and Pb isotopes. Chemical Geology, 222(3–4), 149–167. https://doi.org/10.1016/j.chemgeo.2005.05.006
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Cites
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Cites
Grousset, F. E., Henry, F., Minster, J. F., & Monaco, A. (1990). Nd isotopes as tracers in water column particles: the western Mediterranean Sea. Marine Chemistry, 30, 389–407. https://doi.org/10.1016/0304-4203(90)90083-o
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Cites
Contact
Blanchet, Cécile L.
GFZ German Research Centre for Geosciences, Potsdam, Germany;
Citiation
Blanchet, C. L. (2018). A global database of radiogenic Nd and Sr isotopes in marine and terrestrial samples [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.5.2.2018.001
Geo location(s)
Africa and Europe sectors