Geokronologi
|
Eon
(Eonotem)
|
Era
(Eratem)
|
Period
(System)
|
Epok
(Serie)
|
Ålder
(Etage)
|
Miljoner
år sedan
|
|
|
|
|
|
nu
|
Fanerozoikum
|
Kenozoikum
|
Kvartär
|
Holocen
|
Meghalaya
|
0,004–0,000
|
Northgrip
|
0,008–0,004
|
Greenland
|
0,012–0,008
|
Pleistocen
|
Övre pleistocen
|
0,129–0,012
|
Chiba
|
0,774–0,129
|
Calabria
|
1,80–0,774
|
Gela
|
2,58–1,80
|
Neogen
|
Pliocen
|
Piacenza
|
3,6–2,6
|
Zancle
|
5,3–3,6
|
Miocen
|
Messina
|
7,2–5,3
|
Tortona
|
11,6–7,2
|
Serravalle
|
13,8–11,6
|
Langhe
|
16,0–13,8
|
Burdigala
|
20,4–16,0
|
Aquitaine
|
23,0–20,4
|
Paleogen
|
Oligocen
|
Chatt
|
28–23
|
Rupel
|
34–28
|
Eocen
|
Priabona
|
38–34
|
Barton
|
41–38
|
Lutetia
|
48–41
|
Ypres
|
56–48
|
Paleocen
|
Thanet
|
59–56
|
Själland
|
62–59
|
Dan
|
66–62
|
Mesozoikum
|
Krita
|
Yngre krita
|
Maastricht
|
72–66
|
Campan
|
84–72
|
Santon
|
86–84
|
Coniac
|
90–86
|
Turon
|
94–90
|
Cenoman
|
100–94
|
Äldre krita
|
Alba
|
113–100
|
Apt
|
125–113
|
Barreme
|
129–125
|
Hauterive
|
133–129
|
Valangin
|
140–133
|
Berrias
|
145–140
|
Jura
|
Yngre jura
|
Tithon
|
152–145
|
Kimmeridge
|
157–152
|
Oxford
|
164–157
|
Mellersta jura
|
Callov
|
166–164
|
Bathon
|
168–166
|
Bajoc
|
170–168
|
Aalen
|
174–170
|
Äldre jura
|
Toarc
|
183–174
|
Pliensbach
|
191–183
|
Sinemur
|
199–191
|
Hettang
|
201–199
|
Trias
|
Yngre trias
|
Rät
|
208–201
|
Nor
|
227–208
|
Karn
|
237–227
|
Mellersta trias
|
Ladin
|
242–237
|
Anis
|
247–242
|
Äldre trias
|
Olenek
|
251–247
|
Indus
|
252–251
|
Paleozoikum
|
Perm
|
Loping
|
Changxing
|
254–252
|
Wujiaping
|
259–254
|
Guadalupe
|
Capitan
|
265–259
|
Word
|
269–265
|
Road
|
273–269
|
Cisural
|
Kungur
|
284–273
|
Artinsk
|
290–284
|
Sakmara
|
294–290
|
Assel
|
299–294
|
Karbon
|
Pennsylvania
|
Gzhel
|
304–299
|
Kasimov
|
307–304
|
Moskva
|
315–307
|
Basjkir
|
323–315
|
Mississippi
|
Serpuchov
|
331–323
|
Visé
|
347–331
|
Tournai
|
359–347
|
Devon
|
Yngre devon
|
Famenne
|
372–359
|
Frasne
|
383–372
|
Mellersta devon
|
Givet
|
388–383
|
Eifel
|
393–388
|
Äldre devon
|
Ems
|
408–393
|
Prag
|
411–408
|
Lochkov
|
419–411
|
Silur
|
Pridoli
|
423–419
|
Ludlow
|
Ludford
|
426–423
|
Gorsty
|
427–426
|
Wenlock
|
Homer
|
430–427
|
Sheinwood
|
433–430
|
Llandovery
|
Telych
|
438–433
|
Aeron
|
441–438
|
Rhuddan
|
444–441
|
Ordovicium
|
Yngre ordovicium
|
Hirnant
|
445–444
|
Katy
|
453–445
|
Sandby
|
458–453
|
Mellersta ordovicium
|
Darriwil
|
467–458
|
Daping
|
470–467
|
Äldre ordovicium
|
Flo
|
478–470
|
Tremadoc
|
485–478
|
Kambrium
|
Furong
|
Kambriums etage 10
|
490–485
|
Jiangshan
|
494–490
|
Paibi
|
497–494
|
Miaoling
|
Guzhang
|
500–497
|
Drum
|
504–500
|
Wuliu
|
509–504
|
Kambriums serie 2
|
Kambriums etage 4
|
514–509
|
Kambriums etage 3
|
521–514
|
Terreneuve
|
Kambriums etage 2
|
529–521
|
Fortune
|
541–529
|
Proterozoikum
|
Neo-
proterozoikum
|
Ediacara
|
635–541
|
Kryogen
|
720–635
|
Tonium
|
1000–720
|
Meso-
proterozoikum
|
Stenium
|
1200–1000
|
Ectasium
|
1400–1200
|
Kalymmium
|
1600–1400
|
Paleo-
proterozoikum
|
Statherium
|
1800–1600
|
Orosirium
|
2050–1800
|
Rhyacium
|
2300–2050
|
Siderium
|
2500–2300
|
Arkeikum
|
Neoarkeikum
|
2800–2500
|
Mesoarkeikum
|
3200–2800
|
Paleoarkeikum
|
3600–3200
|
Eoarkeikum
|
4000–3600
|
Hadeikum
|
4600–4000
|
Solsystemet och jorden bildas
|
tidigare
|
Färgkodningen finns i {{ICS-färg}}
, som använder färger enligt International Commission on Stratigraphy.
Färgkodning enligt