Supplementary Chart Information

• Chart Updating Status
• Current Chart - Static
• Accessing the Chart’s Data
• Translations & Old Versions
• Mobile App
• Pronunciation Guide

Chart Updating Status

As announced before (see Episodes 48), we are updating the way we handle chart and data on this website.

The ICS’ digital and graphic officer are integrating their data and charts so that human and computer-to-computer use will share a single point of truth.

The main chart is now computer-generated, from data. The version number is 2024/12.

See Accessing the Chart’s Data below to access the underlying data.

The manually produced graphic chart for 2024/12 remains available, in archived form, see Current Chart - Static below. The same holds for earlier manually produced charts and translations, see Translations & Old Versions, also below.

Planned Updates

In late 2025, the ICS will be extending this data file to include:

• tweaks to the PDF graphics
  • Font size of chart and column headers
  • Subseries indication
• more temporal relations
  • as per the more sophisticated Geological Timescale, which is being updated to 2024
• translation quality control and inclusion of further languages
  • validated against the archive of past translations (below)

Current Chart - Static

Here is a static versions of the current Chart (2026/06) in English.

• English default (JPG)
• English default (PDF)

See Translations & Old Versions below for alternate language and older issue versions of this Chart.

Accessing the Chart’s Data

The Chart is built from an RDF data file which can be downloaded:

• https://github.com/i-c-stratigraphy/chart/blob/main/chart.ttl

This is a SKOS vocabulary of Chart elements with conceptual relations between them and some temporal properties.

We will also be making this data file available via its persistent identifier which is

http://resource.geosciml.org/classifier/ics/ischart

via updated the Commission for Geoscience Information, likely early in 2026.

Mobile App

Translations & Old Versions

Pronunciation Guide

Here is a pronunciation guide in English, French & Spanish for the Chart elements that gives hyphenated syllabification:

• Pronunciation Guide in Excel

English	Hyphenation	Pronunciation (British)	Français	Césure	Español	Silabación
Aalenian	Aa-le-ni-an		Aalénien	Aa-lé-nien	Aaleniense	A-a-le-nien-se
Aeronian	Aer-o-ni-an		Aéronien	Aé-ro-nien	Aeroniense	A-e-ro-nien-se
Albian	Al-bi-an		Albien	Al-bien	Albiense	Al-bien-se
Anisian	Ani-si-an		Anisien	A-ni-sien	Anisiense	A-ni-sien-se
Aptian	Ap-ti-an		Aptien	Ap-tien	Aptiense	Ap-tien-se
Aquitanian	Aq-ui-ta-ni-an		Aquitanien	A-qui-ta-nien	Aquitaniense	A-qui-ta-nien-se
Archean	Ar-che-an		Archéen	Ar-chéen	Arcaico	Ar-cai-co
Artinskian	Art-in-ski-an		Artinskien	Ar-tins-kien	Artinskiense	Ar-tins-kien-se
Asselian	As-sel-ian		Assélien	As-sé-lien	Asseliense	As-se-lien-se
Bajocian	Ba-jo-ci-an		Bajocien	Ba-jo-cien	Bajociense	Ba-jo-cien-se
Barremian	Bar-re-mi-an		Barrémien	Bar-ré-mien	Barremiense	Ba-rre-mien-se
Bartonian	Bar-to-ni-an		Bartonien	Bar-to-nien	Bartoniense	Bar-to-nien-se
Bashkirian	Bash-kiri-an		Bashkirien	Bash-ki-rien	Bashkiriense	Bash-ki-rien-se
Bathonian	Batho-ni-an		Bathonien	Ba-tho-nien	Bathoniense	Ba-tho-nien-se
Berriasian	Ber-ri-a-sian		Berriasien	Ber-ria-sien	Berriasiense	Be-rria-sien-se
Burdigalian	Bur-di-gal-i-an		Burdigalien	Bur-diga-lien	Burdigaliense	Bur-diga-lien-se
Calabrian	Ca-la-bri-an		Calabrien	Ca-la-brien	Calabriense	Ca-la-brien-se
Callovian	Call-o-v-i-an		Callovien	Cal-lo-vien	Calímico	Ca-lí-mi-co
Calymmian	Cal-ym-mi-an		Calymmien	Ca-lym-mien	Calloviense	Ca-llo-vien-se
Cambrian	Cam-bri-an	ˈkæmbɹiən	Cambrien	Cam-brien	Cámbrico	Cám-bri-co
Campanian	Cam-pa-ni-an		Campanien	Cam-pa-nien	Campaniense	Cam-pa-nien-se
Capitanian	Cap-i-ta-ni-an		Capitanien	Ca-pi-ta-nien	Capitaniense	Ca-pi-ta-nien-se
Carboniferous	Car-bon-if-er-ous	ˌkɑɹbəˈnɪfɝəs	Carbonifère	Car-bo-ni-fè-re	Carbonífero	Car-bo-ní-fe-ro
Carnian	Car-ni-an		Carnien	Car-nien	Carniense	Car-nien-se
Cenomanian	Cenoma-ni-an		Cénomanien	Cé-no-ma-nien	Cenomaniense	Ce-no-ma-nien-se
Cenozoic	Ce-no-zo-ic	ˌsinəˈzoʊɪk	Cénozoïque	Cé-no-zoï-que	Cenozoico	Ce-no-zoi-co
Changhsingian	Changhsin-gi-an		Changhsingien	Changh-sin-gien	Changhsingiense	Changh-sin-gien-se
Chattian	Chat-ti-an		Chattien	Chat-tien	Chattiense	Cha-ttien-se
Chibanian	Chi-ba-ni-an		Chibanien	Chi-ba-nien	Chibaniense	Chi-ba-nien-se
Cisuralian	Cis-ura-li-an		Cisuralien	Ci-su-ra-lien	Cisuraliense	Ci-su-ra-lien-se
Coniacian	Co-ni-a-cian		Coniacien	Co-nia-cien	Coniaciense	Co-nia-cien-se
Cretaceous	Cre-ta-ceous	krɪˈteɪ.ʃəs	Crétacé	Cré-ta-cé	Cretácico	Cre-tá-ci-co
Cryogenian	Cry-o-ge-ni-an		Cryogénien	Cryo-gé-nien	Criogénico	Crio-gé-ni-co
Danian	Da-ni-an		Danien	Da-nien	Daniense	Da-nien-se
Dapingian	Dapin-gi-an		Dapingien	Da-pin-gien	Dapingiense	Da-pin-gien-se
Darriwilian	Dar-ri-wil-ian		Darriwilien	Dar-ri-wi-lien	Darriwiliense	Da-rri-wi-lien-se
Devonian	De-vo-ni-an	dɪˈvoʊniən	Dévonien	Dé-vo-nien	Devónico	De-vó-ni-co
Drumian	Dru-mi-an		Drumien	Dru-mien	Drumiense	Dru-mien-se
Ectasian	Ec-ta-si-an		Ectasien	Ec-ta-sien	Ectásico	Ec-tá-si-co
Ediacaran	E-di-a-ca-ran		Édiacarien	É-dia-ca-rien	Ediacárico	E-dia-cá-ri-co
Eifelian	Eife-lian		Eifélien	Ei-fé-lien	Eifeliense	Ei-fe-lien-se
Emsian	Em-sian		Emsien	Em-sien	Emsiense	Em-sien-se
Eoarchean	E-o-ar-che-an		Éoarchéen	Éo-ar-chéen	Eoarcaico	E-o-ar-cai-co
Eocene	E-o-cene	ˈiəˌsin	Éocène	Éo-cè-ne	Eoceno	E-o-ce-no
Famennian	Fa-men-ni-an		Famennien	Fa-men-nien	Fameniense	Fa-me-nien-se
Floian	Flo-i-an		Floien	Floien	Floiense	Floien-se
Fortunian	For-tu-ni-an		Fortunien	Fo-rtu-nien	Fortuniense	For-tu-nien-se
Frasnian	Frasn-i-an		Frasnien	Fras-nien	Frasniense	Fras-nien-se
Furongian	Fu-ron-gi-an		Furongien	Fu-ron-gien	Furongiense	Fu-ron-gien-se
Gelasian	Ge-la-si-an		Gélasien	Gé-la-sien	Gelasiense	Ge-la-sien-se
Givetian	Give-tian		Givétien	Gi-vé-tien	Givetiense	Gi-ve-tien-se
Gorstian	Gors-tian		Gorstien	Gor-stien	Gorstiense	Gors-tien-se
Greenlandian	Geen-lan-d-i-an		Greenlandien	Green-lan-dien	Groenlandiense	Gro-en-lan-dien-se
Guadalupian	Gua-da-lu-pian		Guadalupien	Gua-da-lu-pien	Guadalupiense	Gua-da-lu-pien-se
Guzhangian	Gu-zhan-gi-an		Guzhangien	Guz-han-gien	Guzhangiense	Guz-han-gien-se
Gzhelian	G-zhe-li-an		Gzhélien	Gzhé-lien	Gzheliense	Gzhe-lien-se
Hadean	Hade-an		Hadéen	Ha-déen	Hádico	Há-di-co
Hauterivian	Hau-teriv-i-an		Hauterivien	Hau-te-ri-vien	Hauteriviense	Hau-te-ri-vien-se
Hettangian	Het-tan-gi-an		Hettangien	Het-tan-gien	Hettangiense	Het-tan-gien-se
Hirnantian	Hir-nan-ti-an		Hirnantien	Hir-nan-tien	Hirnantiense	Hir-nan-tien-se
Holocene	Hol-o-cene		Holocène	Ho-lo-cè-ne	Holoceno	Ho-lo-ce-no
Homerian	Ho-mer-i-an		Homérien	Ho-mé-rien	Homeriense	Ho-me-rien-se
Induan	In-du-an		Indusien	In-du-sien	Induense	In-du-sien-se
Jiangshanian	Ji-ang-sha-ni-an		Jiangshanien	Jiang-sha-nien	Jiangshaniense	Jiang-sha-nien-se
Jurassic	Ju-ras-sic	dʒʊˈɹæsɪk	Jurassique	Ju-ras-si-que	Jurásico	Ju-rá-si-co
Kasimovian	Ka-s-i-mo-vi-an		Kasimovien	Ka-si-mo-vien	Kasimoviense	Ka-si-mo-vien-se
Katian	Kat-i-an		Katien	Ka-tien	Katiense	Ka-tien-se
Kimmeridgian	Kim-me-r-idg-ian		Kimméridgien	Kim-mé-rid-gien	Kimmeridgiense	Kim-me-rid-gien-se
Kungurian	Kun-gu-ri-an		Koungourien	Koun-gou-rien	Kunguriense	Kun-gu-rien-se
Ladinian	La-din-i-an		Ladinien	La-di-nien	Ladiniense	La-di-nien-se
Langhian	Lan-ghi-an		Langhien	Lan-ghien	Langhiense	Lan-ghien-se
Llandovery	Lla-nd-o-ver-y		Llandovery	Llan-do-ve-ry	Llandovery	Llan-do-ve-ry
Lochkovian	Lochko-vi-an		Lochkovien	Loch-ko-vien	Lochkoviense	Loch-ko-vien-se
Lopingian	Lopin-gi-an		Lopingien	Lo-pin-gien	Lopingiense	Lo-pin-gien-se
Ludfordian	Lud-for-di-an		Ludfordien	Lud-for-dien	Ludfordiense	Lud-for-dien-se
Ludlow	Lud-low		Ludlow	Lud-low	Ludlow	Lud-low
Lutetian	Lu-te-tian		Lutétien	Lu-té-tien	Luteciense	Lu-te-cien-se
Maastrichtian	Maas-trich-tian		Maastrichtien Maëstrichtien	Maas-trich-tien Maës-trich-tien	Maastrichtiense	Ma-as-trich-tien-se
Meghalayan	Meg-ha-layan		Méghalayen	Mé-gha-layen	Megalayense	Me-ga-la-yen-se
Mesoarchean	Mes-o-ar-che-an		Mésoarchéen	Mé-so-ar-chéen	Mesoarcaico	Me-so-ar-cai-co
Mesoproterozoic	Meso-pro-te-ro-zo-ic		Mésoprotérozoïque	Mé-so-pro-té-ro-zoï-que	Mesoproterozoico	Me-so-pro-te-ro-zoi-co
Mesozoic	Mes-o-zo-ic		Mésozoïque	Mé-so-zoï-que	Mesozoico	Me-so-zoi-co
Messinian	Mes-sin-i-an		Messinien	Mes-si-nien	Messiniense	Mes-si-nien-se
Miaolingian	Mi-ao-lin-gi-an		Miaolingien	Miao-lin-gien	Miaolingiense	Mia-o-lin-gien-se
Miocene	Mi-o-cene		Miocène	Mio-cè-ne	Mioceno	Mio-ce-no
Mississippian	Mis-sis-sip-pi-an		Mississippien	Mis-sis-sip-pien	Misisípico	Mi-si-sí-pi-co
Moscovian	Mos-co-vi-an		Moscovien	Mos-co-vien	Moscoviense	Mos-co-vien-se
Neoarchean	Ne-o-ar-che-an		Néoarchéen	Néo-ar-chéen	Neoarcaico	Ne-o-ar-cai-co
Neogene	Ne-o-gene		Néogène	Néo-gè-ne	Neógeno	Ne-ó-ge-no
Neoproterozoic	Ne-o-pro-te-ro-zo-ic		Néoprotérozoïque	Néo-pro-té-ro-zoï-que	Neoproterozoico	Ne-o-pro-te-ro-zoi-co
Norian	No-ri-an		Norien	No-rien	Noriense	No-rien-se
Northgrippian	North-grip-pi-an		Northgrippien	North-grip-pien	Norgripiense	Nor-gri-pien-se
Olenekian	O-le-neki-an		Olénékien	O-lé-né-kien	Olenekiense	O-le-ne-kien-se
Oligocene	Ol-i-go-cene		Oligocène	O-li-go-cè-ne	Oligoceno	O-li-go-ce-no
Ordovician	Or-do-vi-cian		Ordovicien	Or-do-vi-cien	Ordovícico	Or-do-ví-ci-co
Orosirian	Oro-si-ri-an		Orosirien	O-ro-si-rien	Orosírico	O-ro-sí-ri-co
Oxfordian	Ox-for-di-an		Oxfordien	Ox-for-dien	Oxfordiense	Ox-for-dien-se
Paibian	Paibi-an		Paibien	Pai-bien	Paibiense	Pai-bien-se
Paleoarchean	Pa-le-o-ar-che-an		Paléoarchéen	Pa-léo-ar-chéen	Paleoarcaico	Pa-le-o-ar-cai-co
Paleocene	Pa-le-o-cene		Paléocène	Pa-léo-cè-ne	Paleoceno	Pa-le-o-ce-no
Paleogene	Pa-le-o-gene		Paléogène	Pa-léo-gè-ne	Paleógeno	Pa-le-ó-ge-no
Paleoproterozoic	Pa-le-o-pro-te-ro-zo-ic		Paléoprotérozoïque	Pa-léo-pro-té-ro-zoï-que	Paleoproterozoico	Pa-le-o-pro-te-ro-zoi-co
Paleozoic	Pa-le-o-zo-ic		Paléozoïque	Pa-léo-zoï-que	Paleozoico	Pa-le-o-zoico
Pennsylvanian	Penn-syl-va-ni-an		Pennsylvanien	Penn-syl-va-nien	Pensilvánico	Pen-sil-vá-ni-co
Permian	Per-mi-an	ˈpɝmiən	Permien	Per-mien	Pérmico	Pér-mi-co
Phanerozoic	Phan-er-o-zo-ic		Phanérozoïque	Pha-né-ro-zoï-que	Fanerozoico	Fa-ne-ro-zoi-co
Piacenzian	Pi-a-cen-zi-an		Plaisancien	Plai-san-cien	Piacenziense	Pia-cen-zien-se
Pleistocene	Pleis-to-cene		Pléistocène	Pléis-to-cène	Pleistoceno	Pleis-to-ce-no
Pliensbachian	Pliens-bachi-an		Pliensbachien	Pliens-ba-chien	Pliensbachiense	Pliens-ba-chien-se
Pliocene	Pli-o-cene		Pliocène	Plio-cè-ne	Plioceno	Plio-ce-no
Pragian	Pra-gi-an		Pragien	Pra-gien	Pragiense	Pra-gien-se
Precambrian	Pre-cam-bri-an	pɹiˈkæmbɹiən	Précambrien	Pré-cam-brien	Precámbrico	Pre-cám-bri-co
Priabonian	Pri-a-bo-ni-an		Priabonien	Pria-bo-nien	Priaboniense	Pria-bo-nien-se
Pridoli	Prid-o-li		Pridoli	Pri-do-li	Prídoli	Prí-do-li
Proterozoic	Pro-te-ro-zo-ic		Protéozoïque	Protéo–zoï-que	Proterozoico	Pro-te-ro-zoi-co
Quaternary	Qua-ter-na-ry	ˈkwɑtɝˌnɛɹi	Quaternaire	Qua-ter-nai-re	Cuaternario	Cua-ter-na-rio
Rhaetian	Rhae-tian		Rhétien	Rhé-tien	Rhaetiense	Rha-e-tien-se
Rhuddanian	Rhud-da-ni-an		Rhuddanien	Rhud-da-nien	Rhuddaniense	Rhud-da-nien-se
Rhyacian	Rhy-a-cian		Rhyacien	Rhya-cien	Riácico	Riá-ci-co
Roadian	Road-i-an		Roadien	Roa-dien	Roadiense	Ro-a-dien-se
Rupelian	Ru-pe-l-i-an		Rupélien	Ru-pé-lien	Rupeliense	Ru-pe-lien-se
Sakmarian	Sak-mari-an		Sakmarien	Sak-ma-rien	Sakmariense	Sak-ma-rien-se
Sandbian	Sand-bi-an		Sandbien	Sand-bien	Sandbiense	Sand-bien-se
Santonian	San-to-ni-an		Santonien	San-to-nien	Santoniense	San-to-nien-se
Selandian	Selan-di-an		Sélandien	Sé-lan-dien	Selandiense	Se-lan-dien-se
Serpukhovian	Ser-pu-kho-vi-an		Serpukhovien	Ser-pu-kho-vien	Serpukhoviense	Ser-pu-kho-vien-se
Serravallian	Ser-ra-val-li-an		Serravallien	Ser-ra-val-lien	Serravalliense	Se-rra-va-llien-se
Sheinwoodian	Shein-woo-di-an		Sheinwoodien	Shein-woo-dien	Sheinwoodiense	Shein-wo-o-dien-se
Siderian	Si-de-ri-an		Sidérien	Si-dé-rien	Sidérico	Si-dé-ri-co
Silurian	Si-lu-ri-an		Silurien	Si-lu-rien	Silúrico	Si-lú-ri-co
Sinemurian	Sine-mu-ri-an		Sinémurien	Si-né-mu-rien	Sinemuriense	Si-ne-mu-rien-se
Statherian	Sta-t-he-ri-an		Stathérien	Sta-thé-rien	Estatérico	Es-ta-té-ri-co
Stenian	Ste-ni-an		Sténien	Sté-nien	Esténico	Es-té-ni-co
Telychian	Te-lychi-an		Télychien	Té-ly-chien	Telychiense	Te-ly-chien-se
Terreneuvian	Ter-re-neu-vi-an		Terreneuvien	Ter-re-neu-vien	Terreneuviense	Te-rre-neu-vien-se
Thanetian	Thane-tian		Thanétien	Tha-né-tien	Thanetiense	Tha-ne-tien-se
Tithonian	Titho-ni-an		Tithonien	Ti-tho-nien	Titoniense	Ti-to-nien-se
Toarcian	Toar-cian		Toarcien	Toar-cien	Toarciense	To-ar-cien-se
Tonian	To-ni-an		Tonien	To-nien	Tónico	Tó-ni-co
Tortonian	Tor-to-ni-an		Tortonien	Tor-to-nien	Tortoniense	Tor-to-nien-se
Tournaisian	Tour-nai-si-an		Tournaisien	Tour-nai-sien	Tournaisiense	Tour-nai-sien-se
Tremadocian	Tre-ma-do-ci-an		Trémadocien	Tré-ma-do-cien	Tremadociense	Tre-ma-do-cien-se
Triassic	Tri-as-sic	ˌtɹaɪˈæˌsɪk	Trias	Trias	Triásico	Triá-si-co
Turonian	Tu-ro-ni-an		Turonien	Tu-ro-nien	Turoniense	Tu-ro-nien-se
Valanginian	Valan-gin-i-an		Valanginien	Va-lan-gi-nien	Valanginiense	Va-lan-gi-nien-se
Visean	Vise-an		Viséen	Vi-séen	Viseense	Vi-se-en-se
Wenlock	Wen-lock		Wenlock	Wen-lock	Wenlock	Wen-lock
Wordian	Wor-d-i-an		Wordien	Wor-dien	Wordiense	Wor-dien-se
Wuchiapingian	Wu-chi-apin-gi-an		Wuchiapingien	Wu-chia-pin-gien	Wuchiapingiense	Wu-chia-pin-gien-se
Wuliuan	Wu-li-uan		Wuliuen	Wu-liuen	Wuliuense	Wu-liu-en-se
Ypresian	Ypre-sian		Yprésien	Y-pré-sien	Ypresiense	Y-pre-sien-se
Zanclean	Zan-clean		Zancléen	Zan-cléen	Zancliense	Zan-clien-se

Compiler: Bruno Granier
Date: 2022/12/17