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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
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 126150 collections
International Chronostratigraphic Timescale | Ordovician of China | Cenozoic Subepochs | Cambrian of West Avalonia | Cambrian of North America | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Quaternary | Holocene | Meghalayan | 0 | ||||||||
Northgrippian | 0.0042 | ||||||||||
Greenlandian | 0.0082 | ||||||||||
Pleistocene | Late Pleistocene | Late Pleistocene | 0.0117 | ||||||||
Chibanian | Middle Pleistocene | 0.129 | |||||||||
Calabrian | Early Pleistocene | 0.774 | |||||||||
Gelasian | 1.8 | ||||||||||
Neogene | Pliocene | Piacenzian | Late Pliocene | 2.58 | |||||||
Zanclean | Early Pliocene | 3.6 | |||||||||
Miocene | Messinian | Late Miocene | 5.333 | ||||||||
Tortonian | 7.246 | ||||||||||
Serravallian | Middle Miocene | 11.63 | |||||||||
Langhian | 13.82 | ||||||||||
Burdigalian | Early Miocene | 15.98 | |||||||||
Aquitanian | 20.44 | ||||||||||
Paleogene | Oligocene | Chattian | Late Oligocene | 23.03 | |||||||
Rupelian | Early Oligocene | 27.82 | |||||||||
Eocene | Priabonian | Late Eocene | 33.9 | ||||||||
Bartonian | Middle Eocene | 37.71 | |||||||||
Lutetian | 41.2 | ||||||||||
Ypresian | Early Eocene | 47.8 | |||||||||
Paleocene | Thanetian | Late Paleocene | 56 | ||||||||
Selandian | Middle Paleocene | 59.2 | |||||||||
Danian | Early Paleocene | 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 | 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 | 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 | ||||||||
Kasimovian | 303.7 | ||||||||||
Moscovian | 307 | ||||||||||
Bashkirian | 315.2 | ||||||||||
Mississippian | Serpukhovian | 323.2 | |||||||||
Visean | 330.9 | ||||||||||
Tournaisian | 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 | Hirnantian | Xiaoxita †/Shikou | Wufeng † | 443.8 | |||||
Katian | Chientangkiangian | 445.2 | |||||||||
Neichianshanian/Hanjiang | 449.5 | ||||||||||
Sandbian | 453 | ||||||||||
Middle Ordovician | Darriwilian | Darriwilian | Guniu †/Hulo | 458.4 | |||||||
Hunjiang † | Dawan †/Daobaowan/Ningkuo | 466.3 * | |||||||||
Dapingian | Dapingian | 467.3 | |||||||||
Early Ordovician | Floian | Yiyangian | 470 | ||||||||
Tremadocian | Xinchangian | 477.7 | |||||||||
Lianghekou † | 477.9 * | ||||||||||
Cambrian | Furongian | Stage 10 | Franconian †/Dresbachian/Millardan | 485.4 | |||||||
Sunwaptan | 487.5 | ||||||||||
Jiangshanian | 489.5 | ||||||||||
Steptoean | 493 * | ||||||||||
Paibian | 494 | ||||||||||
Miaolingian | Guzhangian | Marjumian | Albertian † | 497 | |||||||
Arcadian | 498.4 | ||||||||||
Drumian | 500.5 | ||||||||||
Wuliuan | Topazan | 504.5 | |||||||||
Delamaran | 506.5 | ||||||||||
Series 2 | Stage 4 | Branchian | Waucoban † | 509 | |||||||
Dyeran | 511 * | ||||||||||
Stage 3 | 514 | ||||||||||
Montezuman | 514.8 * | ||||||||||
Placentian | 517.1 | ||||||||||
Begadean | 519.9 * | ||||||||||
Terreneuvian | Stage 2 | 521 | |||||||||
Fortunian | 529 | ||||||||||
538.8 |