The International Commission on Stratigraphy sets global standards for geologic time, offering resources and updates for earth science professionals and researchers.
Official global standards for geologic time
The International Commission on Stratigraphy (ICS) is the leading authority for establishing the official standards of geologic time worldwide. If you work in earth sciences or are interested in geology, this site provides essential charts, guidelines, and updates about how the Earth's history is organized and named.
You can find detailed information on stratigraphic units, official statements, and recent decisions affecting the global geologic time scale. The site is especially valuable for researchers, educators, and students who need accurate, up-to-date references on stratigraphy. Whether you're looking for the latest boundary definitions or collaborative international initiatives, ICS offers a central resource for the scientific community.
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