Template:Geology to Paleobiology

From Wikipedia, the free encyclopedia
Jump to: navigation, search
e  h
Units in geochronology and stratigraphy[1]
Segments of rock (strata) in chronostratigraphy Time spans in geochronology Notes to
geochronological units
Eonothem
Eon
4 total, half a billion years or more
Erathem
Era
10 defined, several hundred million years
System
Period
22 defined, tens to ~one hundred million years
Series
Epoch
tens of millions of years
Stage
Age
millions of years
Chronozone
Chron
subdivision of an age, not used by the ICS timescale

References

These references will appear in the article, but this list appears only on this page.
  1. ^ Cohen, K.M.; Finney, S.; Gibbard, P.L. (2013), International Chronostratigraphic Chart (PDF), International Commission on Stratigraphy .