The Darwin Core Maintenance Interest Group (https://www.tdwg.org/community/dwc/) is pleased to announce that the ChronometricAge Task Group (https://www.tdwg.org/community/esp/chrono/) of the Earth Sciences and Paleontology Interest Group (https://www.tdwg.org/community/esp/) has prepared a vocabulary enhancement for Darwin Core consisting of a ChronometricAge class and its properties. A minimum 30-day period for public comment is now open (2020-11-21). To view the proposal and/or engage in the review, visit https://github.com/tdwg/chrono/issues/15, which will provide further guidance and the means to comment. If you are unable to create GitHub comments, you can reply to this message or send comments to the ChronometricAge Task Group convenor at gtuco.btuco@gmail.com. In the absence of objections or substantive amendment requests, the review will close on 2020-12-21. 

John Wieczorek

Darwin Core Maintenance Interest Group convenor on behalf of the Task Group