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| |colspan=3|<span style="float:right;"><span class="plainlinksneverexpand">  </span></span><center><big>''']'''</big><ref>{{cite web| |
|colspan=3|<span style="float:right;"><span class="plainlinksneverexpand">  </span></span><center><big>''']'''</big><ref>{{cite web|archiveurl=http://web.archive.org/web/20091229003212/http://www.stratigraphy.org/upload/ISChart2009.pdf|archivedate=2009-12-29|title=International Stratigraphic Chart|author=]}}</ref></center> | ||
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| !Segments of rock (]) in ] | !Segments of rock (]) in ] | ||
Revision as of 05:33, 10 November 2011
| e h | ||
| Segments of rock (strata) in chronostratigraphy | Periods of time in geochronology | Notes |
|---|---|---|
| 4 total, half a billion years or more | ||
| 12 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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