Cohen, K.M., Finney, S.C., Gibbard, P.L. & Fan, J.-X. (2013; updated) The ICS International Chronostratigraphic Chart. Episodes 36: 199-204.
Precambrian Supereon
Original version Copyright © 2018 International Commission on Stratigraphy
2019-05-01 - Updated to 2018-08 version;
removed StratigraphicPoints, Ranks, TimePositions collections;
nested sub-collections in GeochronologicEra
Base of Miaolingian
Base of Olenekian
Base of Silurian
Base of Cambrian Series 2
Base of Callovian
Geologic Time Scale (2018)
Base of Ludlow
Base of Proterozoic
2019-06-10
isc
2017-03-31
Stratotype Point Base of Ordovician
Added informal definition of chronometric temporal reference system - Millions of years, counting backwards from 1950
Base of Toarcian
Base of Chattian
Base of Middle Mississippian
Base of Visean
Base of Bajocian
Base of Homerian
Geologic Timescale Elements in the International Chronostratigraphic Chart
Base of Katian
Base of Ectasian
Base of Priabonian
International Chronostratigraphic Chart 2018
Base of Late Jurassic
Base of Middle Devonian
Base of Paleoarchean
Base of Drumian
Base of Guzhangian
Base of Pliensbachian
Base of Holocene
Base of Calabrian
Base of Tithonian
Base of Eocene
Base of Piacenzian
Base of Ediacaran
Base of Mesozoic
Base of Pragian
Base of Late Ordovician
Base of Hirnantian
Base of Darriwillian
Base of Famennian
Chinese and Japanese preferred labels from SKOS by Xiaogang Ma, adopted from Asian Multilingual Thesaurus of Geosciences.
Base of Late Triassic
2018-09-27 fixed some broken namespaces and prefixes, mostly related to SPARQL - some kind of search/replace error
Stratigraphic points
Base of Barremian
International Chronostratigraphic Chart (2018)
Base of Sinemurian
International Commission on Stratigraphy
Base of Kungurian
Base of Kimmeridgian
Base of Norian
Base of Furongian
Base of Cambrian Stage 4
Base of Burdigalian
Base of Cretaceous
Base of Late Pleistocene
http://resource.geosciml.org/classifier/ics/ischart/
Base of Lutetian
Base of Oligocene
Base of Pliocene
Simon J D COX, CSIRO
Base of Hauterivian
Base of Permian
isc2018:2019-06-10
Base of Rhaetian
Base of Floian
Base of Cryogenian
Base of Archean
Base of Quaternary
Base of Middle Jurassic
See <http://stratigraphy.org/ICSchart/ChangeLog2012-2013-2014-2015-2016-2017-2018.txt> for changes from prior versions
Base of Ladinian
2019-06-10 - This revision adjusts the nomenclature of units to use only chronologic terminology rather than stratigraphic terminology [e.g. Cambrian-Age 2 in place of Cambrian-Stage 2; Cambrian-Epoch 2 in place of Cambrian-Series 2; Early/Late in place of Lower/Upper (namely in application to Epoch/time units rather than their equivalent Series/stratigraphic units—e.g. Early Jurassic Epoch rather than Lower Jurassic Series)]; and the whole artefact is renamed ‘Geologic Time Scale’.
Also: changed samfl:shape --> geo:hasGeometry
Base of Middle Triassic
Base of Phanerozoic
The Present
Base of Thanetian
Base of Middle Pleistocene
Base of Aeronian
Base of Pridoli
Phanerozoic Eon
Base of Pennsylvanian
Base of Ludfordian Stage
Base of Cambrian Stage 2
Base of Albian
Base of Gzhelian
Base of Late Mississippian
Base of Carboniferous
Base of Langhian
1. THORS ontology updated to align with OWL-Time (instead of ISO 19108).
2. GTS ontology updated to use sam-lite (instead of OWL implementation of ISO 19156) with a lightweight SOSA alignment
3. Spatial data uses GeoSPARQL (instead of OWL implementation of ISO 19107)
Base of Aptian
Base of Telychian
This Ontology is made available under the Open Data Commons Attribution License: http://opendatacommons.org/licenses/by/1.0
Base of Wenlock
Base of Statherian
<p>This dataset is being <a href="https://github.com/GeoscienceAustralia/geosciml.org/blob/master/resource/static/vocabulary/timescale/">maintained in GitHub</a></p>
<p>Please report errors, or propose improvements, using the <a href="https://github.com/GeoscienceAustralia/geosciml.org/issues">GitHub issue-tracker</a>.
Base of Campanian
OneGeology Europe preferred labels merged in by S.M. Richard.
Base of Selandian
2017-02-22 Added additional collections for eras of each rank;
classified rank-based collections using XKOS;
cleaned out legacy Base* instances that did not have links;
renamed *[GS]SP individuals to *SP;
removed all boundaries as TopConcepts, leaving on PreCambrian and Phanerozoic as TopConcepts
Base of Cambrian Stage 10
Base of Ordovician
Base of Orosirian
Base of Sakmarian
Base of Tortonian
Base of Mesoproterozoic
Base of Mesoarchean
Base of Bartonian
Base of Serravallian
RDF version Copyright © 2019 CSIRO, Arizona Geological Survey, IUGS
Geochronologic Boundaries
Base of Turonian
Base of Cenozoic
Base of Santonian
RDF representation of the Geologic Time Scale, as defined in the International Chronostratigraphic Chart (ICC) from the International Commission on Stratigraphy (ICS). The ICC embraces both chronostratigraphic (time-rock) units and their equivalent geochronologic (geologic-time) units, the former being related to the ‘Stratigraphic points’ referred to below, and the latter (geochronologic units) being employed in this RDF representation.
Base of Neogene
Base of Jurassic
Base of Maastrichtian
S M Richard
Base of Devonian
Base of Late Pennsylvanian
Geologic Time Scale (2018)
Base of Lopingian
Base of Givetian
Base of Late Devonian
Base of Messinian
Base of Wordian
Base of Middle Pennsylvanian
Base of Jiangshanian
Base of Guadalupian
Base of Valanginian
Base of Neoproterozoic
Base of Capitanian
Geological Timescale (2018)
Base of Changhsingian
Formation of the Earth
Base of Stenian
Base of Emsian
Base of Artinskian
Base of Bathonian
Base of Rhyacian
Ordovician Period
Base of Coniacian
Base of Late Cretaceous
Base of Neoarchean
2009-05-01 Introduced Holocene subdivisions, as shown in 2018 version from stratigraphy.org - see
2017/02 - Paleogene: Base of Chattian: The numeric age is updated to that at the ratified GSSP (27.82 Ma; Nanno et al. exp. 2017; by request of Simonetti Monechi)
Base of Middle Ordovician