A global database of radiogenic Nd and Sr isotopes in marine and terrestrial samples

Blanchet, Cécile L.;

2018 || GFZ Data Services

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).

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

MSL enriched sub domains
  • geochemistry
Source http://dx.doi.org/10.5880/gfz.5.2.2018.001
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;
Contributors
  • 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). R Code for mapping (contour maps) the Nd and Sr isotopic signature of marine and terrestrial sediments. figshare. https://doi.org/10.6084/M9.FIGSHARE.6990161.V3
  • 10.6084/m9.figshare.6990161.v3
  • IsSupplementedBy
  • Blanchet, C. (2018). R Code for plotting statistical parameters of Nd and Sr isotopic signature of Potential Source Areas. 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
  • 10.1371/journal.pone.0115958
  • Cites
  • Box, M. R., Krom, M. D., Cliff, R. A., Bar-Matthews, M., Almogi-Labin, A., Ayalon, A., & Paterne, M. (2011). Response of the Nile and its catchment to millennial-scale climatic change since the LGM from Sr isotopes and major elements of East Mediterranean sediments. Quaternary Science Reviews, 30(3–4), 431–442. https://doi.org/10.1016/j.quascirev.2010.12.005
  • 10.1016/j.quascirev.2010.12.005
  • 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
  • 10.1016/j.epsl.2015.12.014
  • Cites
  • Chavagnac, V., Lair, M., Milton, J. A., Lloyd, A., Croudace, I. W., Palmer, M. R., Green, D. R. H., & Cherkashev, G. A. (2008). Tracing dust input to the Mid-Atlantic Ridge between 14°45′N and 36°14′N: Geochemical and Sr isotope study. Marine Geology, 247(3–4), 208–225. https://doi.org/10.1016/j.margeo.2007.09.003
  • 10.1016/j.margeo.2007.09.003
  • Cites
  • Cole, J. M., Goldstein, S. L., deMenocal, P. B., Hemming, S. R., & Grousset, F. E. (2009). Contrasting compositions of Saharan dust in the eastern Atlantic Ocean during the last deglaciation and African Humid Period. Earth and Planetary Science Letters, 278(3–4), 257–266. https://doi.org/10.1016/j.epsl.2008.12.011
  • 10.1016/j.epsl.2008.12.011
  • Cites
  • Dasch, E. J. (1969). Strontium isotopes in weathering profiles, deep-sea sediments, and sedimentary rocks. Geochimica et Cosmochimica Acta, 33(12), 1521–1552. https://doi.org/10.1016/0016-7037(69)90153-7
  • 10.1016/0016-7037(69)90153-7
  • Cites
  • FRANZESE, A., HEMMING, S., GOLDSTEIN, S., & ANDERSON, R. (2006). Reduced Agulhas Leakage during the Last Glacial Maximum inferred from an integrated provenance and flux study. Earth and Planetary Science Letters, 250(1–2), 72–88. https://doi.org/10.1016/j.epsl.2006.07.002
  • 10.1016/j.epsl.2006.07.002
  • 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
  • 10.1029/2008PA001706
  • 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
  • 10.1016/S0025-3227(01)00123-2
  • 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
  • 10.1016/0009-2541(86)90126-9
  • Cites
  • Goldstein, S. L., O’Nions, R. K., & Hamilton, P. J. (1984). A Sm-Nd isotopic study of atmospheric dusts and particulates from major river systems. Earth and Planetary Science Letters, 70(2), 221–236. https://doi.org/10.1016/0012-821x(84)90007-4
  • 10.1016/0012-821X(84)90007-4
  • 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
  • 10.1016/j.chemgeo.2005.05.006
  • Cites
  • Gross, A., Palchan, D., Krom, M. D., & Angert, A. (2016). Elemental and isotopic composition of surface soils from key Saharan dust sources. Chemical Geology, 442, 54–61. https://doi.org/10.1016/j.chemgeo.2016.09.001
  • 10.1016/j.chemgeo.2016.09.001
  • 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
  • 10.1016/0304-4203(90)90083-O
  • Cites
Contact
  • Blanchet, Cécile L.
  • GFZ German Research Centre for Geosciences, Potsdam, Germany;
Citation 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
Spatial coordinates
  • eLong 60.0000
  • nLat 55.0000
  • sLat -40.0000
  • wLong -35.0000