Geochimica et Cosmochimica Acta (GCA) is a professional scientific research journal for geochemistry and cosmochemistry. It is sponsored by The Geochemical Society and The Meteoritical Society and is published semi-monthly (24 issues per year) by Elsevier Science Ltd. GCA is published in hardcopy and is also available as an electronic version. Inquiries regarding institutional subscription should be directed to Elsevier. Individual subscriptions are available through membership in either of the sponsoring societies.

This website provides facilities for electronic submission of manuscripts and reviews and for password-protected electronic access to manuscripts for authors and reviewers. It also provides general information about the journal and about the Washington University editorial office. All information and facilities are accessible through the buttons on the navigation bar which appears at the top of this and most other pages on this site. If you have not previously used this site you may wish to read About This Site before proceeding, particularly if you want to access or submit a manuscript or review for the first time.