Stratigraphic Chart 2008.pdf

ICS

INTERNATIONAL STRATIGRAPHIC CHART

International Commission on Stratigraphy

Holocene

Tithonian

145.5 ±4.0

Famennian

359.2 ±2.5

Ediacaran

542

150.8 ±4.0

0.0117

Upper

374.5 ±2.6

Neo-

proterozoic

~635

Upper

Kimmeridgian

Frasnian

Cryogenian

~ 155.6

0.126

385.3 ±2.6

850

“Ionian”

Calabrian

Oxfordian

Givetian

Tonian

Pleistocene

161.2 ±4.0

0.781

Middle

391.8 ±2.7

1000

Callovian

Eifelian

Stenian

164.7 ±4.0

1.806

397.5 ±2.7

Meso-

proterozoic

1200

Gelasian

Bathonian

Emsian

Ectasian

2.588

Middle

167.7 ±3.5

407.0 ±2.8

1400

Piacenzian

Bajocian

Lower

Pragian

Calymmian

Pliocene

3.600

171.6 ±3.0

411.2 ±2.8

1600

Zanclean

Aalenian

Lochkovian

Statherian

5.332

175.6 ±2.0

416.0 ±2.8

1800

Messinian

Toarcian

Orosirian

Pridoli

Paleo-

proterozoic

183.0 ±1.5

7.246

418.7 ±2.7

2050

Tortonian

Pliensbachian

Ludfordian

Rhyacian

Lower

189.6 ±1.5

Ludlow

11.608

421.3 ±2.6

2300

Serravallian

Sinemurian

Gorstian

Siderian

Miocene

13.82

196.5 ±1.0

422.9 ±2.5

2500

Langhian

Hettangian

Homerian

426.2 ±2.4

15.97

199.6 ±0.6

Wenlock

Neoarchean

Burdigalian

Rhaetian

Sheinwoodian

20.43

203.6 ±1.5

2800

428.2 ±2.3

Norian

Aquitanian

Upper

Telychian

23.03

216.5 ±2.0

436.0 ±1.9

Mesoarchean

Chattian

Carnian

Llandovery

Aeronian

28.4 ±0.1

Oligocene

~ 228.7

439.0 ±1.8

3200

Rupelian

Ladinian

Rhuddanian

33.9 ±0.1

Paleoarchean

Middle

237.0 ±2.0

443.7 ±1.5

Priabonian

Anisian

Hirnantian

37.2 ±0.1

~ 245.9

445.6 ±1.5

3600

Bartonian

Olenekian

Upper

Katian

Eoarchean

Eocene

40.4 ±0.2

Lower

~ 249.5

455.8 ±1.6

Lutetian

Induan

Sandbian

48.6 ±0.2

55.8 ±0.2

251.0 ±0.4

460.9 ±1.6

4000

Ypresian

Changhsingian

Darriwilian

Hadean (informal)

Lopingian

253.8 ±0.7

Middle

468.1 ±1.6

Thanetian

Wuchiapingian

Dapingian

~4600

58.7 ±0.2

260.4 ±0.7

471.8 ±1.6

Paleocene

Selandian

Capitanian

Floian

265.8 ±0.7

Subdivisions of the global geologic record are

formally defined by their lower boundary. Each unit

of the Phanerozoic (~542 Ma to Present) and the

base of Ediacaran are defined by a basal Global

Standard Section and Point (GSSP ), whereas

Precambrian units are formally subdivided by

absolute age (Global Standard Stratigraphic Age,

GSSA). Details of each GSSP are posted on the

ICS website ( www.stratigraphy.org ).

Numerical ages of the unit boundaries in the

Phanerozoic are subject to revision. Some stages

within the Cambrian will be formally named upon

international agreement on their GSSP limits. Most

sub-Series boundaries (e.g., Middle and Upper

Aptian) are not formally defined.

Colors are according to the Commission for the

Geological Map of the World ( www.cgmw.org ).

The listed numerical ages are from 'A Geologic

Time Scale 2004', by F.M. Gradstein, J.G. Ogg,

A.G. Smith, et al. (2004; Cambridge University Press)

and “The Concise Geologic Time Scale” by J.G. Ogg,

G. Ogg and F.M. Gradstein (2008).

~ 61.1

Lower

478.6 ±1.7

Danian

Wordian

Guadalupian

Tremadocian

268.0 ±0.7

65.5 ±0.3

488.3 ±1.7

Maastrichtian

Roadian

Stage 10

70.6 ±0.6

270.6 ±0.7

~ 492 *

Campanian

Kungurian

Furongian

Stage 9

83.5 ±0.7

85.8 ±0.7

275.6 ±0.7

~ 496 *

Santonian

Artinskian

Paibian

Upper

Cisuralian

284.4 ±0.7

~ 499

Coniacian

Sakmarian

Guzhangian

~ 88.6

294.6 ±0.8

~ 503

Turonian

Asselian

Series 3

Drumian

299.0 ±0.8

93.6 ±0.8

~ 506.5

Cenomanian

Gzhelian

Stage 5

99.6 ±0.9

Upper

303.4 ±0.9

~ 510 *

Albian

Kasimovian

Stage 4

~ 515 *

112.0 ±1.0

307.2 ±1.0

Series 2

Aptian

Middle

Moscovian

Stage 3

311.7 ±1.1

~ 521 *

125.0 ±1.0

130.0 ±1.5

Barremian

Lower

Bashkirian

Stage 2

~ 528 *

Lower

318.1 ±1.3

Terreneuvian

Hauterivian

Upper

Serpukhovian

Fortunian

~ 133.9

328.3 ±1.6

542.0 ±1.0

Valanginian

Middle

Visean

This chart was drafted by Gabi Ogg. Intra Cambrian unit ages

with * are informal, and awaiting ratified definitions.

140.2 ±3.0

145.5 ±4.0

345.3 ±2.1

Berriasian

Lower

Tournaisian

359.2 ±2.5

* Definition of the Quaternary and revision of the Pleistocene are under discussion. Base of the Pleistocene is at 1.81 Ma

(base of Calabrian), but may be extended to 2.59 Ma (base of Gelasian). The historic “Tertiary” comprises the Paleogene

and Neogene, and has no official rank.

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