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
- P. L. Gibbard, M. J. Head, and M. J. C. Walker. 2010. Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma. Journal of Quaternary Science 25(2):96-102 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 126973 collections
International Chronostratigraphic Timescale | Cambrian of Britain | Cambrian of Australia | Cambrian of North America | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Merioneth | Dolgellian/Trempealeauan | Datsonian | Franconian †/Dresbachian/Millardan | 485.4 | |||||
Payntonian | 486.8 * | |||||||||||
Sunwaptan | 487.5 | |||||||||||
Festiniogian | 489.2 * | |||||||||||
Jiangshanian | Iverian | 489.5 | ||||||||||
Steptoean | 493 * | |||||||||||
Maentwrogian | 493.1 * | |||||||||||
Paibian | Idamean | 494 | ||||||||||
Miaolingian | Guzhangian | St Davids | Mindyallan | Marjumian | Albertian † | 497 | ||||||
Boomerangian | 499 | |||||||||||
Drumian | Undillan | 500.5 | ||||||||||
Floran | 503 | |||||||||||
Wuliuan | Templetonian | Topazan | 504.5 | |||||||||
Delamaran | 506.5 | |||||||||||
Ordian | 507.8 * | |||||||||||
Series 2 | Stage 4 | Caerfai | Waucoban † | 509 | ||||||||
510.8 * | ||||||||||||
Dyeran | 511 * | |||||||||||
Stage 3 | 514 | |||||||||||
Montezuman | 514.8 * | |||||||||||
Begadean | 519.9 * | |||||||||||
Terreneuvian | Stage 2 | 521 | ||||||||||
Fortunian | 529 | |||||||||||
538.8 |