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
- 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 126864 collections
International Chronostratigraphic Timescale | Cambrian of Kazakhstan | Permian-Jurassic of New Zealand | Permian of the Pamirs | Obsolete Carboniferous Ages of China | Devonian Subages | Ordovician of Australia | ||||
---|---|---|---|---|---|---|---|---|---|---|
Quaternary | Holocene | Meghalayan | 0 | |||||||
Northgrippian | 0.0042 | |||||||||
Greenlandian | 0.0082 | |||||||||
Pleistocene | Late Pleistocene | 0.0117 | ||||||||
Chibanian | 0.129 | |||||||||
Calabrian | 0.774 | |||||||||
Gelasian | 1.8 | |||||||||
Neogene | Pliocene | Piacenzian | 2.58 | |||||||
Zanclean | 3.6 | |||||||||
Miocene | Messinian | 5.333 | ||||||||
Tortonian | 7.246 | |||||||||
Serravallian | 11.63 | |||||||||
Langhian | 13.82 | |||||||||
Burdigalian | 15.98 | |||||||||
Aquitanian | 20.44 | |||||||||
Paleogene | Oligocene | Chattian | 23.03 | |||||||
Rupelian | 27.82 | |||||||||
Eocene | Priabonian | 33.9 | ||||||||
Bartonian | 37.71 | |||||||||
Lutetian | 41.2 | |||||||||
Ypresian | 47.8 | |||||||||
Paleocene | Thanetian | 56 | ||||||||
Selandian | 59.2 | |||||||||
Danian | 61.6 | |||||||||
Cretaceous | Late Cretaceous | Maastrichtian | 66 | |||||||
Campanian | 72.1 | |||||||||
Santonian | 83.6 | |||||||||
Coniacian | 86.3 | |||||||||
Turonian | 89.8 | |||||||||
Cenomanian | 93.9 | |||||||||
Early Cretaceous | Albian | 100.5 | ||||||||
Aptian | 113 | |||||||||
Barremian | 121.4 | |||||||||
Hauterivian | 125.77 | |||||||||
Valanginian | 132.6 | |||||||||
Berriasian | 139.8 | |||||||||
Jurassic | Late Jurassic | Tithonian | Oteke | Puaroan | 145 | |||||
Kimmeridgian | 149.2 | |||||||||
Kawhia | Ohauan | 150 | ||||||||
Heterian | 154.5 | |||||||||
Oxfordian | 154.8 | |||||||||
Middle Jurassic | Callovian | 161.5 | ||||||||
Temaikan | 164.3 | |||||||||
Bathonian | 165.3 | |||||||||
Bajocian | 168.2 | |||||||||
Aalenian | 170.9 | |||||||||
Early Jurassic | Toarcian | 174.7 | ||||||||
Herangi | Ururoan | 176 | ||||||||
Pliensbachian | 184.2 | |||||||||
Aratauran | 188.9 | |||||||||
Sinemurian | 192.9 | |||||||||
Hettangian | 199.5 | |||||||||
Triassic | Late Triassic | Rhaetian | Balfour | Otapirian | 201.4 | |||||
Norian | Warepan | 208.5 | ||||||||
Otamitan | 217 | |||||||||
Oretian | 221 | |||||||||
Carnian | 227 | |||||||||
Gore | Kaihikuan | 227.5 | ||||||||
Middle Triassic | Ladinian | 237 | ||||||||
Etalian | 238 | |||||||||
Anisian | 242 | |||||||||
Malakovian | 246 | |||||||||
Early Triassic | Olenekian | 247.2 | ||||||||
Nelsonian | 249 | |||||||||
Induan | 251.2 | |||||||||
DUrville | Makarewan | 251.5 | ||||||||
Permian | Lopingian | Changhsingian | Dorashamian | 251.902 | ||||||
Waiitian | 253.2 | |||||||||
Wuchiapingian | Dzhulfian | 254.14 | ||||||||
Puruhauan | 254.2 | |||||||||
Guadalupian | Capitanian | Aparima | Flettian | Midian | 259.51 | |||||
Wordian | 264.28 | |||||||||
Barettian | 266 | |||||||||
Murgabian | 266.2 * | |||||||||
Roadian | 266.9 | |||||||||
Cisuralian | Kungurian | Kubergandian | 273.01 | |||||||
Mangapirian | 276 | |||||||||
Bolorian | 279.8 | |||||||||
Artinskian | 283.5 | |||||||||
Telfordian | 285 | |||||||||
Yakhtashian | 286 | |||||||||
288.5 | ||||||||||
Sakmarian | Sakmarian | 290.1 | ||||||||
Asselian | Asselian | 293.52 | ||||||||
Carboniferous | Pennsylvanian | Gzhelian | Mapingian † | 298.9 | ||||||
Kasimovian | 303.7 | |||||||||
305.9 | ||||||||||
Moscovian | 307 | |||||||||
Bashkirian | 315.2 | |||||||||
Mississippian | Serpukhovian | 323.2 | ||||||||
Visean | 330.9 | |||||||||
Tournaisian | 346.7 | |||||||||
Devonian | Late Devonian | Famennian | Late Famennian | 358.9 | ||||||
Middle Famennian | 365.3 * | |||||||||
Early Famennian | 368.5 * | |||||||||
Frasnian | Late Frasnian | 372.2 | ||||||||
Middle Frasnian | 375.4 * | |||||||||
Early Frasnian | 379.3 * | |||||||||
Middle Devonian | Givetian | Late Givetian | 382.7 | |||||||
Middle Givetian | 383.7 * | |||||||||
Early Givetian | 385.9 * | |||||||||
Eifelian | Late Eifelian | 387.7 | ||||||||
Early Eifelian | 390.3 * | |||||||||
Early Devonian | Emsian | Late Emsian | 393.3 | |||||||
Early Emsian | 398.3 * | |||||||||
Pragian | Pragian | 407.6 | ||||||||
Lochkovian | Late Lochkovian | 410.8 | ||||||||
Middle Lochkovian | 412.8 * | |||||||||
Early Lochkovian | 415.6 * | |||||||||
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 | Ungurian | 477.7 | ||||||||
Warendian | 482.8 * | |||||||||
Cambrian | Furongian | Stage 10 | Batyrbaian | 485.4 | ||||||
Jiangshanian | 489.5 | |||||||||
Aksaian | 490.7 * | |||||||||
Sakian | 492.2 * | |||||||||
Paibian | 494 | |||||||||
Miaolingian | Guzhangian | Ayusokkanian | 497 | |||||||
499.5 | ||||||||||
Drumian | Zhanaarykian | 500.5 | ||||||||
Tuesaian | 503 | |||||||||
Wuliuan | 504.5 | |||||||||
505.3 | ||||||||||
Series 2 | Stage 4 | 509 | ||||||||
Toyonian | 510 * | |||||||||
Botomian | 512.5 * | |||||||||
Stage 3 | 514 | |||||||||
Atdabanian | 515.6 * | |||||||||
Terreneuvian | Stage 2 | Tommotian | 521 | |||||||
525.5 | ||||||||||
Fortunian | 529 | |||||||||
538.8 |