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
- 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
- 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
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 126606 collections
International Chronostratigraphic Timescale | Ordovician of Australia | Cretaceous-Cenozoic of New Zealand | Carboniferous of China | Obsolete Names for ICS Units | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Quaternary | Holocene | Meghalayan | Wanganui | Haweran | 0 | |||||
Northgrippian | 0.0042 | |||||||||
Greenlandian | 0.0082 | |||||||||
Pleistocene | Late Pleistocene | 0.0117 | ||||||||
Chibanian | 0.129 | |||||||||
Castlecliffian | 0.34 | |||||||||
Calabrian | 0.774 | |||||||||
Nukumaruan | 1.63 | |||||||||
Gelasian | 1.8 | |||||||||
Mangapanian | 2.4 | |||||||||
Neogene | Pliocene | Piacenzian | Tertiary † | 2.58 | ||||||
Waipipian | 3 | |||||||||
Zanclean | 3.6 | |||||||||
Opoitian | 3.7 | |||||||||
Miocene | Messinian | Taranaki | Kapitean | 5.333 | ||||||
Tongaporutuan | 7.2 | |||||||||
Tortonian | 7.246 | |||||||||
Southland | Waiauan | 11.04 | ||||||||
Serravallian | 11.63 | |||||||||
Lillburnian | 13.05 | |||||||||
Langhian | 13.82 | |||||||||
Clifdenian | 15.1 | |||||||||
Pareora | Altonian | 15.9 | ||||||||
Burdigalian | 15.98 | |||||||||
Otaian | 18.7 | |||||||||
Aquitanian | 20.44 | |||||||||
Landon | Waitakian | 21.7 | ||||||||
Paleogene | Oligocene | Chattian | 23.03 | |||||||
Duntroonian | 25.2 | |||||||||
Whaingaroan | 27.3 | |||||||||
Rupelian | 27.82 | |||||||||
Eocene | Priabonian | 33.9 | ||||||||
Arnold | Runangan | 34.6 | ||||||||
Kaiatan | 36.7 | |||||||||
Bartonian | 37.71 | |||||||||
Bortonian | 39.1 | |||||||||
Lutetian | 41.2 | |||||||||
Dannevirke | Porangan | 42.6 | ||||||||
Heretaungan | 45.7 | |||||||||
Ypresian | 47.8 | |||||||||
Mangaorapan | 48.9 | |||||||||
Waipawan | 52 | |||||||||
Paleocene | Thanetian | Teurian | 56 | |||||||
Selandian | 59.2 | |||||||||
Danian | 61.6 | |||||||||
Cretaceous | Late Cretaceous | Maastrichtian | Mata | Haumurian | 66 | |||||
Campanian | 72.1 | |||||||||
Santonian | Piripauan | 83.6 | ||||||||
Raukumara | Teratan | 86.1 | ||||||||
Coniacian | 86.3 | |||||||||
Turonian | 89.8 | |||||||||
Mangaotanean | 90.5 | |||||||||
Arowhanan | 93.7 | |||||||||
Cenomanian | 93.9 | |||||||||
Clarence | Ngaterian | 95.2 | ||||||||
Motuan | 99.5 | |||||||||
Early Cretaceous | Albian | 100.5 | ||||||||
Urutawan | 103.3 | |||||||||
Taitai | Korangan | 108.4 | ||||||||
Aptian | 113 | |||||||||
117.5 | ||||||||||
Barremian | 121.4 | |||||||||
Hauterivian | 125.77 | |||||||||
Valanginian | 132.6 | |||||||||
Berriasian | 139.8 | |||||||||
Jurassic | Late Jurassic | Tithonian | 145 | |||||||
Kimmeridgian | 149.2 | |||||||||
Oxfordian | 154.8 | |||||||||
Middle Jurassic | Callovian | 161.5 | ||||||||
Bathonian | 165.3 | |||||||||
Bajocian | 168.2 | |||||||||
Aalenian | 170.9 | |||||||||
Early Jurassic | Toarcian | 174.7 | ||||||||
Pliensbachian | 184.2 | |||||||||
Sinemurian | 192.9 | |||||||||
Hettangian | 199.5 | |||||||||
Triassic | Late Triassic | Rhaetian | 201.4 | |||||||
Norian | 208.5 | |||||||||
Carnian | 227 | |||||||||
Middle Triassic | Ladinian | 237 | ||||||||
Anisian | 242 | |||||||||
Early Triassic | Olenekian | 247.2 | ||||||||
Induan | 251.2 | |||||||||
Permian | Lopingian | Changhsingian | 251.902 | |||||||
Wuchiapingian | Longtanian † | 254.14 | ||||||||
Guadalupian | Capitanian | 259.51 | ||||||||
Wordian | 264.28 | |||||||||
Roadian | 266.9 | |||||||||
Cisuralian | Kungurian | 273.01 | ||||||||
Artinskian | 283.5 | |||||||||
Sakmarian | 290.1 | |||||||||
Asselian | 293.52 | |||||||||
Carboniferous | Pennsylvanian | Gzhelian | 298.9 | |||||||
Xiaodushanian | 300 * | |||||||||
Kasimovian | 303.7 | |||||||||
Dalaun | 305.8 * | |||||||||
Moscovian | 307 | |||||||||
Bashkirian | 315.2 | |||||||||
Huashibanian | 318.5 * | |||||||||
Lousuan | 321.2 * | |||||||||
Mississippian | Serpukhovian | Dewunian | 323.2 | |||||||
Shangsian | 330.8 * | |||||||||
Visean | 330.9 | |||||||||
Jiusian | 335 * | |||||||||
Tournaisian | Tangbagouan | 346.7 | ||||||||
Devonian | Late Devonian | Famennian | 358.9 | |||||||
Frasnian | 372.2 | |||||||||
Middle Devonian | Givetian | 382.7 | ||||||||
Eifelian | 387.7 | |||||||||
Early Devonian | Emsian | 393.3 | ||||||||
Pragian | 407.6 | |||||||||
Lochkovian | 410.8 | |||||||||
Silurian | Pridoli | 419.2 | ||||||||
Ludlow | Ludfordian | 423 | ||||||||
Gorstian | 425.6 | |||||||||
Wenlock | Homerian | 427.4 | ||||||||
Sheinwoodian | 430.5 | |||||||||
Llandovery | Telychian | 433.4 | ||||||||
Aeronian | 438.5 | |||||||||
Rhuddanian | 440.8 | |||||||||
Ordovician | Late Ordovician | Hirnantian | Bolindian | 443.8 | ||||||
Katian | 445.2 | |||||||||
Eastonian | 449 * | |||||||||
Gisbornian | 452 * | |||||||||
Sandbian | 453 | |||||||||
Middle Ordovician | Darriwilian | Darriwilian | 458.4 | |||||||
Dapingian | Yapeenian | 467.3 | ||||||||
Castlemainian | 468.5 * | |||||||||
Early Ordovician | Floian | Chewtonian | 470 | |||||||
Bendigonian | 471.8 * | |||||||||
Lancefieldian | 473.5 * | |||||||||
Tremadocian | 477.7 | |||||||||
Warendian | 482.8 * | |||||||||
Cambrian | Furongian | Stage 10 | 485.4 | |||||||
Jiangshanian | 489.5 | |||||||||
Paibian | 494 | |||||||||
Miaolingian | Guzhangian | Series 3 † | 497 | |||||||
Drumian | 500.5 | |||||||||
Wuliuan | Stage 5 † | 504.5 | ||||||||
509 |