The Data Repositories associated with Earthchem and The Astromaterials Data System archive, publish and make accessible user-contributed data and other digital content from Earth and Planetary Science research.

When using EarthChem or Astromaterials Data Systems repository services your dataset will be reviewed by curators with domain-specific knowledge, as outlined below.

By submitting your dataset, you hereby agree to and accept the following policies:

The repositories are domain-specific, offering curation and review of user-submitted data in a variety of Earth and Planetary Science disciplines.

Upon curatorial review, if the submitted data type is considered outside of the repository scope, your data can be rejected from publication.

Please check with our curatorial staff before you start your data submission if your data are within the scope of the EarthChem Library and the Astromaterials Data Repository.

Whenever possible, our staff will provide alternative repositories that would best suit the data type.

The repositories offer data submission templates which are tailored to specific data types.

We highly recommend the use of templates to ensure reproducibility of the data and easy conversion to machine-readable formats.

If the data type can not be aligned with pre-existing templates, it should at least be supplied in one of the following formats:

Generic Resource TypesRecommended Format(s)Additional Format(s)Comment(s)
Tabular DataComma Separated Values (.csv), Tab Separated Values (.tsv), netCDF (.nc), OpenOffice Calc (.ods)Microsoft Excel (.xls or .xlsx), JavaScript Object Notation (.json)ASCII or UTF/UTF8/UNI See guidance for using NetCDF 
TextPortable Document Format/Archival (.pdf), OpenOffice Document (.odt), ASCII (.txt)Microsoft Word (.doc, .docx)Text documents must conform with Section 508 Standards.
MetadataISO 19139 (.xml) Geospatial MetadataFGDC Content Standard for Digital Geospatial Metadata (CSDGM), NASA Directory Interchange Format (DIF), Hierarchical Data Format (.hdf or .h5), Resource Description Framework (.rdf)the preferred representation of metadata in these standard formats is to be in eXtensible Markup Language (xml)
ImagesPortable Network Format (.png), JPEG (.jpeg), Tagged Image File Format (.tiff)BitMap (.bmp), Graphics Interchange Format (.gif), High Efficiency Image (.HEIC)
Geo-referenced dataGeoJSON (.geojson), GeoJPEG (.jgw), Keyhole Markup Language (.kml)
MiscellaniousZip (.zip), Webpage (.html), Jupyter Notebook (.ipynb), Matlab (.m), PowerPoint (.ppt or .pptx)

Our repositories strive to deliver the best quality metadata for datasets. Our curators will review metadata associated with your submitted data, as outlined below.

The completeness and correctness of the (meta)data is the responsibility of the contributor.


Metadata TypeRequired MetadataOptional MetadataComment(s)
Data SourceTitleTitle is concise and describes the dataset content
AbstractAbstract uses full sentences to describe what measurements were
done, the locations, and for what purpose. Avoid abbreviations &
SampleSample nameUse of the International Geo Sample Numbers (IGSN) is recommended
Latitude and Longitude in decimal degreesInclude geospatial information unless not applicable, i.e. experimental samples, extraterrestrial samples
Sample DescriptorsInclude classification, age, stratigraphic position and any additional information on how, where and when the sample was collected
Data and MethodsEach analyte (parameter) in the data table(s) is linked to a sample name or number.
All analytes and units are clearly stated and defined.Avoid or define abbreviations. Relevant standards and reference measurements should be included
when possible.
Technique-Instrument-LaboratoryUse these metadata to define the method code for each analyte (parameter)
Compilation DatasetReference sheet/tab with full citations of all referred publications
Related Publication InformationAuthors, Year, Title, Publisher, (Status)Please include a citation or DOI for the manuscript in which the dataset will be used. If your manuscript is not published yet, include the status (in prep., submitted, in review, accepted)
Funding InformationNSF or NASA Award numbersThis will allow tracking of datasets by Award Number and show compliance with Data Management policies of funding agencies

The EarthChem Library is a curated file repository, you will receive your dataset DOI only after your files and submission has been reviewed and accepted. Please keep in mind that this entire process can take up to two weeks. Complete datasets following all requirements are often published within a few business days.

Datasets in the Library can be identified, shared, published and cited by using a Digital Object Identifier (DOI). The EarthChem Library is part of IEDA, a publication agent with the DataCite consortium.

We ask that you cite the dataset with its dataset DOI. The citation should be formatted as follows:

  • Creator(s) (PublicationYear): Title. Publisher. Identifier. Data Accessed.

For example, a dataset published by IEDA in the EarthChem Library in the DOI system is Whole Rock Helium Data from ODP Site U1256D. Its data DOI is 10.1594/IEDA/100734. Its citation would be:

  • Kurz, M.D.; Curtice, J. (2018): Whole Rock Helium Data from ODP Site U1256D. Interdisciplinary Earth Data Alliance (IEDA). Accessed 29 March 2018.

Access to the EarthChem Library is open and free but you may not circulate or publish materials obtained from this site unless you adhere to the licensing requirements as stipulated by the provider of the dataset(s).

The EarthChem Library guarantees long-term availability of its content through Amazon S3 Glacier.

Use of digital materials obtained from the EarthChem Library is licensed under varying Creative Commons licenses that can be selected by the data contributor. EarthChem Library strongly recommends use of the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license. The license that is applicable for a given dataset can be found on its landing page.


Contributors have 5  Creative Commons data file license options to choose from: