ClumpDB  uses the EarthChem Library as a permanent repository to store raw (replicate-level) clumped isotope data and associated meta-data, with easy, universal access.

The partnership between the clumped isotope community and EarthChem began as part of a community-wide effort in 2019 to reprocess, compare, and reconcile published carbonate clumped isotope calibration data measured in many different labs. It was discovered as part of this project that many published papers lacked the level of information, even in supplementary material, necessary to be able to update and reprocess data using new standard values or new data processing practices. In order to facilitate future reprocessing and/or data compilation efforts and to keep older data relevant and usable as the community progresses, this EarthChem collection was created. Although initially populated with carbonate clumped isotope data (D47), this collection welcomes other clumped isotope data as well (CH4, O2, etc.).

ClumpDB Data Submission Guidelines

Data can be contributed to ClumpDB/ECL in multiple formats, but needs to be documented with relevant information regarding the analytical data quality. Please follow the steps below to confirm that your dataset follows the below requirements and suggestions. Incomplete datasets will take longer to process and publish.

The first step is to prepare your data in the appropriate format for submission. Clumped isotope data should be submitted in large table format, including all sample and standard replicates.


We strongly recommend the use of the clumped isotope data submission template found at [link].  If a template does not yet exist for your type of clumped isotope data, you may edit an existing template to fit your needs or contact us at or about designing a new one.


You can submit data from a publication/study as one combined template file, or separate it into multiple template files that can be linked together as one submission. This may be appropriate in the case of having two distinct types of samples in a single study that may like to be accessed separately at a later date (e.g. modern calibration samples and paleoclimate samples).


EASOTOPE USERS: Along with your completed template file, you may also submit a zipped database file or files (including raw cycle-level voltage data), as long as each file is under 20MB. If needed, split into multiple zipped database files by measurement session.



File Format

  • Submitted data tables should be in the above linked ECL template, if possible, but mustat the very least be in a .csv, .txt, or .xlsx file (not in .pdf, .docx, .jpeg, etc.).
  • A maximum of 20 files can be submitted together, including the template file.
  • Each file has a maximum size of 20 MB.
  • Zipped database files must be in .zip format.



Data & Metadata

  • All analytes, units, and methods mustbe clearly stated and defined. Relevant standards, reference measurements, and additional information about laboratory and instrument should also be included when possible.
  • Every analyte mustbe linked to a sample with a name and geospatial information (unless not applicable, i.e. experimental samples).
  • We strongly recommend use of IGSNs (International Geo Sample Number) as persistent identifiers to identify samples. Obtain IGSNs by registering samples in the System for Earth Sample Registration (SESAR).

If submitting a compilation dataset, the ECL requires a reference sheet or tab with full citations of all referred publications.

During submission, you will be asked for the following additional information, to be provided with your data files.

  • Contributor Information: Name, email, ORCID, Institution
  • Related Funding Information: funding source and award #
  • Dataset information: Title, Type, Lead Author, Co-authors (names and ORCID’s), Abstract, Data Type(s), Subject/keyword, Citation of related publications, publication DOI (if available)
  • Spatial coverage information: spatial coverage type, geographic keywords
  • Dataset linking info: ISGN lookup or IODP cruise DOI#
  • File Upload: file description
  • Release date information: data file release date, data file license

See below for more information about some of these submission requirements.

During submission, you will be asked for identifying information to support your dataset. Here is guidance on what is expected for certain fields.

In general, we encourage users to include as much documentation as possible, taking particular care to include unique identifiers such as IGSNs, related publication DOIs, volcano numbers, cruise DOI’s, etc.


Your dataset title must contain concise and descriptive information about the content of the dataset (the “what” and “where”, for example “Gakkel Ridge basalt melt inclusion and mineral chemistry”). If submitting data from a publication, the dataset title may be the same as your publication title, but likely will be different since your ECL dataset will paint a different story than your full publication.



Your abstract must describe in full sentences the measurements, location, and purpose of the dataset. Avoid abbreviations and acronyms. Include relevant keywords, such as the geographic area or cruise or field program name, for example “This dataset presents analyses of volatile, major, and trace elements for a suite of glasses and melt inclusions from the 85 degrees E segment of the ultra-slow spreading Gakkel Ridge”.


Data Type

For including in the clumped isotope database, select “Chemistry:ClumpedIsotopes”.


Publication DOI

Commonly, datasets will be submitted to ClumpDB/ECL when a paper has been submitted or accepted, but not yet published. In this way, a DOI# can be assigned for a dataset while there is still time to include it in a manuscript prior to final publication. Therefore, at the time of first submission, leave this field blank. Once the manuscript is accepted and a doi has been assigned, contact to provide the manuscript DOI to link the submitted dataset to the paper.


Funding source

We strongly encourage US-based researchers to link their NSF award numbers with their ECL datasets. This will allow tracking of datasets by Award number and show compliance with Data Management policies of funding agencies.

By default, the release date is set to the date of submission. If this is not desirable, you may select a release date within the next two years. Every approved ECL dataset receives a DOI and is searchable in the ECL, even if the release date has not yet been reached. This allows investigators to submit datasets in compliance with data management policies of funding agencies and journals without releasing the actual data immediately.

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 4  Creative Commons data file license options to choose from:

The ECL 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.

  • Make sure your uploaded files are in their final form – the EarthChem Library is a long-term repository, treat the dataset submission like a journal article submission. Once a file has been released for public access, it cannot be changed, instead you would have to publish a new version with a new DOI.
  • Include as much documentation as possible, taking particular care to include unique identifiers such as IGSNs, related publication DOIs, volcano numbers, cruise DOIS, etc.
  • We strongly encourage US-based researchers to link their NSF award numbers with their ECL datasets. This will allow tracking of datasets by Award number and show compliance with Data Management policies of funding agencies.

If any issues arise, please contact

  1. Go to and navigate to the Contribute tab.
  2. Sign in through ORCID (recommended) or GeoPass. GeoPass provides you with sign-in credentials (email and password) for IEDA data systems, including the EarthChem Library, SESAR, and Geochron. More information at
  3. Complete the submission form and upload your file(s) following the requirements above.
  4. Click “submit”.

Clumped Isotope Templates

The clumped isotope EarthChem template for D47 (CO2 and carbonate) was designed with feedback from the clumped community. The goal of this template is to include all information needed to convert raw, replicate-level sample isotopic compositions to final sample mean values, fully corrected into the absolute reference frame (ARF). This template is designed to be flexible and accommodate the many different measurement schemes used in clumped isotope labs around the world. Overall, it is highly recommended that data be uploaded using this template to make it easier to combine data from different projects in the future. However, since we believe it would be better to upload and archive data in another format than not to archive at all, other formats will be accepted into this database (but please use the template if at all possible).


This template includes 3 types of columns/cells: required (green), optional (white), new/customizable (yellow).

Required Fields

Columns/cells highlighted in green define the minimum necessary information to convert raw D47 data to final values.

This includes all replicate-level isotopic values for samples and standards (d45-d47, D47), as well as information about working gas composition, which types of standards were used in the ARF correction, where measurement session and correction window breaks occurred, which acid fractionation factor was used, etc.

All of these columns must be completed.

Optional, Standardized Fields

This template also includes many white columns/cells which represent optional additional information at the study, sample mean or replicate level. In many cases, these columns represent information which should be easily available but is not deemed to be absolutely necessary for going from raw to final data (e.g. ‘sd_d45’, the standard deviation on d45).

Some of these will only be useful for a specific type of study (e.g. the ‘Species’ column is not useful for a study of paleosol carbonates, but may be vital for a foram-based study). We have included many optional columns in this spreadsheet in order to standardize this extra information where possible.

For example, if later on someone wanted to compile all clumped isotope calibration data from soil carbonates, compilation efforts would be much easier if all studies had submitted their assigned calibration temperature under the ‘FormT’ (Formation Temperature) column instead of one study calling that column ‘MAT’ and another calling it ‘FormT’ and a third calling it ‘LocalTemp’.

New/Customizable Fields

In addition to suggestions for optional columns provided in white, an individual dataset may require a specialized column (e.g. ‘PaleoElevation’), representing an additional variable only relevant to your particular study but not commonly reported.

In this case, we encourage users to include as much information as possible in the template to increase future usability.

Please design new column names and formats in alignment with the rest of the template, where possible.

Using the Template

We have provided an ‘Instructions’ tab that defines what is intended to go in each column. However, likely an easier way to figure out what should be included is to look at some archived datasets to see how others have filled in columns.

Example datasets

(Updated November 2020: Creates map from sample geospatial information on ECL landing page and includes more optional columns).

The original 2019 version of the clumped isotope template is available here.


If you have any questions about the clumped isotope templates, please contact Sierra Petersen (  If you are interested in submitting data from a different clumping system, we encourage you to contact to help develop a suitable template for other clumped isotope species.


To publish your own data and receive a DOI, please submit the template to the EarthChem Library.