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
- 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
- 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 126848 collections
International Chronostratigraphic Timescale | Silurian Ages of Europe | Cambrian of China | Precambrian of Russia | ||||||
---|---|---|---|---|---|---|---|---|---|
Phanerozoic | Paleozoic | Silurian | Wenlock | Homerian | Gleedonian | 427.4 | |||
Whitwellian | 429.7 * | ||||||||
Sheinwoodian | 430.5 | ||||||||
Llandovery | Telychian | 433.4 | |||||||
Aeronian | 438.5 | ||||||||
Rhuddanian | 440.8 | ||||||||
Ordovician | Late Ordovician | Hirnantian | 443.8 | ||||||
Katian | 445.2 | ||||||||
Sandbian | 453 | ||||||||
Middle Ordovician | Darriwilian | 458.4 | |||||||
Dapingian | 467.3 | ||||||||
Early Ordovician | Floian | 470 | |||||||
Tremadocian | 477.7 | ||||||||
Cambrian | Furongian | Stage 10 | Niuchehean | Taoyuanian † | 485.4 | ||||
Jiangshanian | Jiangshanian | 489.5 | |||||||
Paibian | Paibian | 494 | |||||||
Waergangian †/Youshuanian | 494.9 * | ||||||||
Miaolingian | Guzhangian | Guzhangian | Wangcunian † | 497 | |||||
Drumian | Drumian | 500.5 | |||||||
Wuliuan | Wuliuan/Taijangian | 504.5 | |||||||
Series 2 | Stage 4 | Duyunian | 509 | ||||||
Stage 3 | Nangaoian | 514 | |||||||
Terreneuvian | Stage 2 | Meishucunian | 521 | ||||||
Fortunian | 529 | ||||||||
Jinnigian | 530.7 | ||||||||
Proterozoic | Neoproterozoic | Ediacaran | Vendian | 538.8 | |||||
Cryogenian | 635 | ||||||||
Tonian | 720 | ||||||||
Karatau | 800 | ||||||||
Mesoproterozoic | Stenian | 1000 | |||||||
Yurmatian | 1100 | ||||||||
Ectasian | 1200 | ||||||||
Burzyan | 1375 | ||||||||
1400 |