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| <center>]</center>||<center>]</center>||4 total, half a billion years or more | | <center>]</center>||<center>]</center>||4 total, half a billion years or more | ||
|- | |- | ||
| <center>]</center> ||<center>]</center>||10 total, several hundred million years | | <center>]</center> ||<center>]</center>||10 total, several hundred million years | ||
|- | |- | ||
| <center>]</center> || <center>]</center>|| | | <center>]</center> || <center>]</center>|| |
Revision as of 18:18, 10 May 2012
e h | ||
Segments of rock (strata) in chronostratigraphy | Periods of time in geochronology | Notes |
---|---|---|
4 total, half a billion years or more | ||
10 total, several hundred million years | ||
tens of millions of years | ||
millions of years | ||
smaller than an age/stage, not used by the ICS timescale |
References
These references will appear in the article, but this list appears only on this page.- International Commission on Stratigraphy. "International Stratigraphic Chart".
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