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Geological time chart

The  schedule below, shows us  the main events, taking place in different geological periods. We find the oldest periods located at the bottom of the chart, because usually the oldest geological deposits are located at the bottom of a geological formation. Right now, we live in a period called the Holocene, it is a part of the Quaternary period. The main classification is an "Era",  which is divided into "periods".

We prefer to use the time chart proposed and updated by the International Commission on Stratigraphy. This commission develops the geological time in an international context, the upper and lower limits of the different time periods are fixed. To determine these limits, the commission uses of as much absolute time dating as possible. Each geological unit has been attributed a so called “locus typicus” or type location. This is a representative section, where a specific geological unit is clearly visible and most complete.

PeriodEpochStageMillion years
Quaternary
(0-2.590 Million Years)
Holocene 0 - 0.012
PleistoceneUpper Pleistocene0.012 - 0.126
Middle Pleistocene0.126 - 0.781
Calabrian0.781 - 1.806
Gelasian1.806 - 2.588
Neogene
(2.588-23.03 Million Years)
PliocenePiacenzian2.588 - 3.600
Zanclean3.600 - 5.333
MioceneMessinian5.333 - 7.246
Tortonian7.246 - 11.62
Serravallian11.62 - 13.82
Langhian13.82 - 15.97
Burdigalian15.97 - 20.44
Aquitanian20.44 - 23.03
Paleogene
(23.03-66.00 Million Years)
OligoceneChattian23.03 - 28.10
Rupelian28.10 - 33.90
EocenePriabonian33.90 - 38.00
Bartonian38.00 - 41.30
Lutetian41.30 - 47.80
Ypresian47.80 - 56.00
PaleoceneThanetian56.00 - 59.20
Selandian59.20 - 61.60
Danian61.60 - 66.00
Cretaceous
(66.00-145.0 Million Years)
Upper CretaceousMaastrichtian66.00 - 72.10
Campanian72.10 - 83.60
Santonian83.60 - 86.30
Coniacian86.30 - 89.80
Turonian89.80 - 93.90
Cenomanian93.90 - 100.5
Lower CretaceousAlbian100.5 - 113.0
Aptian113.0 - 125.0
Barremian125.0 - 129.4
Hauterivian129.4 - 132.9
Valanginian132.9 - 139.8
Berriasian139.8 - 145.0
Jurassic
(145.0-201.3 Million Years)
Upper JurassicTithonian145.0 - 152.1
Kimmeridgian152.1 - 157.3
Oxfordian157.3 - 163.5
Middle JurassicCallovian163.5 - 166.1
Bathonian166.1 - 168.3
Bajocian168.3 - 170.3
Aalenian170.3 - 174.1
Lower JurassicToarcian174.1 - 182.7
Pliensbachian182.7 - 190.8
Sinemurian190.8 - 199.3
Hettangian199.3 - 201.3
Triassic
(201.3-252.2 Million Years)
Upper TriassicRhaetian201.3 - 208.5
Norian208.5 - 228.0
Carnian228.0 - 235.0
Middle TriassicLadinian235.0 - 242.0
Anisian242.0 - 247.2
Lower TriassicOlenekian247.2 - 251.2
Induan251.2 - 252.2
Permian
(252.2-298.9 Million Years)
LopingianChanghsingian252.2 - 254.2
Wuchiapingian254.2 - 259.9
GuadelupianCapitanian259.9 - 265.1
Wordian265.1 - 268.8
Roadian268.8 - 272.3
CisuralianKungurian272.3 - 279.3
Artinskian279.3 - 290.1
Sakmarian290.1 - 295.5
Asselian295.5 - 298.9
Carboniferous
(298.9-358.9 Million Years)
PennsylvanianGzhelian298.9 - 303.7
Kasimovian303.7 - 307.0
Moscovian307.0 - 315.2
Bashkirian315.2 - 323.2
MississippianSerpukhovian323.2 - 330.9
Visean330.9 - 346.7
Tournaisian346.7 - 358.9
Devonian
(358.9-419.2 Million Years)
Upper DevonianFamennian358.9 - 372.2
Frasnian372.2 - 382.7
Middle DevonianGivetian382.7 - 387.7
Eifelian387.7 - 393.3
Lower DevonianEmsian393.3 - 407.6
Pragian407.6 - 410.8
Lochkovian410.8 - 419.2
Silurian
(419.2-443.4 Million Years)
Pridoli 419.2 - 423.0
LudlowLudfordian423.0 - 425.6
Gorstian425.6 - 427.4
WenlockHomerian427.4 - 430.5
Sheinwoodian430.5 - 433.4
LlandoveryTelychian433.4 - 438.5
Aeronian438.5 - 440.8
Rhuddanian440.8 - 443.4
Ordovician
(443.4-485.4 Million Years)
Upper OrdovicianHirnantian443.4 - 445.2
Katian445.2 - 453.0
Sandbian453.0 - 458.4
Middle OrdovicianDarriwilian458.4 - 467.3
Dapingian467.3 - 470.0
Lower OrdovicianFloian470.0 - 477.7
Tremadocian477.7 - 485.4
Cambrian
(485.4-541.0 Million Years)
FurongianStage 10485.4 - 489.5
Jiangshanian489.5 - 494.0
Paibian494.0 - 497.0
Series 3Guzhangian497.0 - 500.5
Drumian500.5 - 504.5
Stage 5504.5 - 509.0
Series 2Stage 4509.0 - 514.0
Stage 3514.0 - 521.0
TerreneuvianStage 2521.0 - 529.0
Fortunian529.0 - 541.0
Precambrian
(541.0-4,600 Million Years)
  541.0 - 4,600


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