A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes
<p>The database presented here contains radiogenic neodymium and strontium isotope ratios measured on both terrestrial and marine sediments. The main purpose of this dataset is to help assess sediment provenance and transport processes for various time intervals. This can be achieved by either...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2019-05-01
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| Series: | Earth System Science Data |
| Online Access: | https://www.earth-syst-sci-data.net/11/741/2019/essd-11-741-2019.pdf |
| _version_ | 1811212264241364992 |
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| author | C. L. Blanchet C. L. Blanchet |
| author_facet | C. L. Blanchet C. L. Blanchet |
| author_sort | C. L. Blanchet |
| collection | DOAJ |
| description | <p>The database presented here contains radiogenic neodymium and strontium
isotope ratios measured on both terrestrial and marine sediments. The main
purpose of this dataset is to help assess 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.</p>
<p>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, specific attention has been devoted to providing 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) 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 split the dataset into
specific categories. For instance, samples were distinguished according to
their location (“Region”, “Sub-region” and “Location” that relate to
locations at continental to city or river scale) or the sample type
(terrestrial samples – “aerosols”, “soil sediments”, “river
sediments”, “rocks” – or marine samples – “marine sediment” or “trap
sample”). Finally, samples were distinguished according to their deposition
age, which allowed us to compute average values for specific time intervals.</p>
<p>Graphical examples illustrating the functionality of the database are
presented and the validity of the process was tested by comparing the results
with published data. The dataset will be updated bi-annually in order to add
more data points to increase the sampling density or provide new types of
samples (e.g. seawater signature) and/or integrate additional information
regarding the samples. It is publicly available (under CC4.0-BY Licence) from
the GFZ data management service at <a href="https://doi.org/10.5880/GFZ.4.3.2019.001">https://doi.org/10.5880/GFZ.4.3.2019.001</a>.</p> |
| first_indexed | 2024-04-12T05:26:12Z |
| format | Article |
| id | doaj.art-e6f9267ce4b540d18f406fac86ad2228 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-04-12T05:26:12Z |
| publishDate | 2019-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-e6f9267ce4b540d18f406fac86ad22282022-12-22T03:46:17ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162019-05-011174175910.5194/essd-11-741-2019A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processesC. L. Blanchet0C. L. Blanchet1Department of Geosciences, Freie Universität Berlin, Berlin, Germanynow at: GFZ German Research Centre for Geosciences, Climate Dynamics and Landscape Evolution, Potsdam, Germany<p>The database presented here contains radiogenic neodymium and strontium isotope ratios measured on both terrestrial and marine sediments. The main purpose of this dataset is to help assess 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.</p> <p>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, specific attention has been devoted to providing 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) 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 split the dataset into specific categories. For instance, samples were distinguished according to their location (“Region”, “Sub-region” and “Location” that relate to locations at continental to city or river scale) or the sample type (terrestrial samples – “aerosols”, “soil sediments”, “river sediments”, “rocks” – or marine samples – “marine sediment” or “trap sample”). Finally, samples were distinguished according to their deposition age, which allowed us to compute average values for specific time intervals.</p> <p>Graphical examples illustrating the functionality of the database are presented and the validity of the process was tested by comparing the results with published data. The dataset will be updated bi-annually in order to add more data points to increase the sampling density or provide new types of samples (e.g. seawater signature) and/or integrate additional information regarding the samples. It is publicly available (under CC4.0-BY Licence) from the GFZ data management service at <a href="https://doi.org/10.5880/GFZ.4.3.2019.001">https://doi.org/10.5880/GFZ.4.3.2019.001</a>.</p>https://www.earth-syst-sci-data.net/11/741/2019/essd-11-741-2019.pdf |
| spellingShingle | C. L. Blanchet C. L. Blanchet A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes Earth System Science Data |
| title | A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes |
| title_full | A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes |
| title_fullStr | A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes |
| title_full_unstemmed | A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes |
| title_short | A database of marine and terrestrial radiogenic Nd and Sr isotopes for tracing earth-surface processes |
| title_sort | database of marine and terrestrial radiogenic nd and sr isotopes for tracing earth surface processes |
| url | https://www.earth-syst-sci-data.net/11/741/2019/essd-11-741-2019.pdf |
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