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ChronostratChart2020-03

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chronostratchart2020 03
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v 2020/03 www.stratigraphy.org 0.0117 0.129 0.774 1.80 2.58 3.600 5.333 7.246 11.63 13.82 15.97 20.44 23.03 27.82 33.9 37.71 41.2 47.8 56.0 59.2 61.6 66.0 72.1 ±0.2 83.6 ±0.2 86.3 ±0.5 89.8 ±0.3 93.9 100.5 ~ 113.0 ~ 125.0 ~ 129.4 ~ 132.6 ~ 139.8 ~ 145.0 ~ 145.0 152.1 ±0.9 157.3 ±1.0 163.5 ±1.0 166.1 ±1.2 168.3 ±1.3 170.3 ±1.4 174.1 ±1.0 182.7 ±0.7 190.8 ±1.0 199.3 ±0.3 201.3 ±0.2 ~ 208.5 ~ 227 254.14 ±0.07 259.1 ±0.5 265.1 ±0.4 268.8 ±0.5 272.95 ±0.11 283.5 ±0.6 290.1 ±0.26 303.7 ±0.1 307.0 ±0.1 315.2 ±0.2 323.2 ±0.4 330.9 ±0.2 346.7 ±0.4 358.9 ±0.4 298.9 ±0.15 293.52 ±0.17 ~ 237 ~ 242 247.2 251.2 251.902 ±0.024 358.9 ±0.4 372.2 ±1.6 382.7 ±1.6 387.7 ±0.8 393.3 ±1.2 407.6 ±2.6 410.8 ±2.8 419.2 ±3.2 423.0 ±2.3 425.6 ±0.9 427.4 ±0.5 430.5 ±0.7 433.4 ±0.8 438.5 ±1.1 440.8 ±1.2 443.8 ±1.5 445.2 ±1.4 453.0 ±0.7 458.4 ±0.9 467.3 ±1.1 470.0 ±1.4 477.7 ±1.4 485.4 ±1.9 541.0 ±1.0 ~ 489.5 ~ 494 ~ 497 ~ 500.5 ~ 504.5 ~ 509 ~ 514 ~ 521 ~ 529 541.0 ±1.0 ~ 635 1000 1200 1400 1600 1800 2050 2300 2500 2800 3200 3600 4000 ~ 4600 ~ 720 0.0042 0.0082 Phanerozoic Cenozoic Quaternary Holocene Pleistocene Pliocene Miocene Oligocene Eocene Paleocene Neogene Paleogene Upper Lower Cretaceous Mesozoic Triassic Carboniferous Mesozoic Permian Jurassic Upper Lower Middle Upper Lower Middle Lopingian Guadalupian Cisuralian Upper Lower Upper Middle Middle Lower Mississippian Pennsylvanian Paleozoic Upper Calabrian Gelasian Piacenzian Zanclean Messinian Tortonian Serravallian Langhian Burdigalian Aquitanian Chattian Rupelian Priabonian Bartonian Lutetian Ypresian Thanetian Selandian Danian Maastrichtian Campanian Santonian Coniacian Turonian Cenomanian Albian Aptian Barremian Hauterivian Valanginian Berriasian Tithonian Kimmeridgian Oxfordian Hettangian Sinemurian Pliensbachian Toarcian Aalenian Bajocian Bathonian Callovian Induan Olenekian Anisian Ladinian Carnian Norian Rhaetian Asselian Sakmarian Artinskian Kungurian Roadian Wordian Capitanian Wuchiapingian Changhsingian Gzhelian Famennian Frasnian Givetian Eifelian Emsian Pragian Lochkovian Ludfordian Gorstian Homerian Sheinwoodian Telychian Aeronian Rhuddanian Hirnantian Katian Sandbian Darriwilian Dapingian Floian Tremadocian Stage 10 Jiangshanian Paibian Guzhangian Drumian Wuliuan Stage 4 Stage 3 Stage 2 Fortunian Kasimovian Moscovian Bashkirian Serpukhovian Visean Tournaisian Terreneuvian Series 2 Miaolingian Furongian Cambrian Lower Middle Upper Ordovician Llandovery Wenlock Ludlow Pridoli Silurian Upper Middle Lower Devonian Paleozoic Hadean Precambrian Eo- archean Paleo- archean Meso- archean Neo- archean Archean Siderian Rhyacian Orosirian Statherian Calymmian Ectasian Stenian Tonian Cryogenian Ediacaran Paleo- proterozoic Meso- proterozoic Neo- proterozoic Proterozoic Phanerozoic Phanerozoic Chibanian Greenlandian Meghalayan Northgrippian L/E M U/L L/E M U/L present Series / Epoch Stage / Age numerical age (Ma) Eonothem / Eon Erathem / Era System / Period Series / Epoch Stage / Age numerical age (Ma) Eonothem / Eon Erathem / Era System / Period Series / Epoch Stage / Age numerical age (Ma) numerical age (Ma) Eonothem / Eon Erathem / Era System / Period GSSP GSSP GSSP GSSP GSSA INTERNATIONAL CHRONOSTRATIGRAPHIC CHART International Commission on Stratigraphy Colouring follows the Commission for the Geological Map of the World (www.ccgm.org) Chart drafted by K.M. Cohen, D.A.T. Harper, P.L. Gibbard, J.-X. Fan (c) International Commission on Stratigraphy, March 2020 To cite: Cohen, K.M., Finney, S.C., Gibbard, P.L. updated) The ICS International Chronostratigraphic Chart. Episodes 36: 199-204. URL: http://www.stratigraphy.org/ICSchart/ChronostratChart2020-03.pdf Units of all ranks are in the process of being defined by Global Boundary Stratotype Section and Points (GSSP) for their lower boundaries, including those of the Archean and Proterozoic, long defined by Global Standard Stratigraphic Ages (GSSA). Italic fonts indicate informal units and placeholders for unnamed units. Versioned charts and detailed information on ratified GSSPs are available at the website http://www.stratigraphy.org. The URL to this chart is found below. Numerical ages are subject to revision and do not define units in the Phanerozoic and the Ediacaran; only GSSPs do. For boundaries in the Phanerozoic without ratified GSSPs or without constrained numerical ages, an approximate numerical age (~) is provided. Ratified Subseries/Subepochs are abbreviated as U/L (Upper/Late), M (Middle) and L/E (Lower/Early). Numerical ages for all systems except Quaternary, upper Paleogene, Cretaceous, Triassic, Permian and Precambrian are taken from ‘A Geologic Time Scale 2012’ by Gradstein et al. (2012), those for the Quaternary, upper Paleogene, Cretaceous, Triassic, Permian and Precambrian were provided by the relevant ICS subcommissions. Eonothem / Eon Erathem / Era System / Period
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