International Chronostratigraphic Timescale
The interval definitions in this timescale are derived from the following sources:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
- J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
There are 59 timescales which overlap this one. show
Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 126144 collections
International Chronostratigraphic Timescale | Cenozoic Subepochs | Obsolete Names for ICS Units | Ten Million Year Bins | ||||||
---|---|---|---|---|---|---|---|---|---|
2.58 | |||||||||
Paleogene | Oligocene | Chattian | Late Oligocene | Tertiary † | Cenozoic 4 | 23.03 | |||
Rupelian | Early Oligocene | 27.82 | |||||||
Eocene | Priabonian | Late Eocene | Cenozoic 3 | 33.9 | |||||
Bartonian | Middle Eocene | 37.71 | |||||||
Lutetian | Cenozoic 2 | 41.2 | |||||||
Ypresian | Early Eocene | 47.8 | |||||||
Paleocene | Thanetian | Late Paleocene | Cenozoic 1 | 56 | |||||
Selandian | Middle Paleocene | 59.2 | |||||||
Danian | Early Paleocene | 61.6 | |||||||
66 |