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© 2019 International Union of Geological Sciences

INTERNATIONAL COMMISSION ON STRATIGRAPHY (ICS)

The International Commission on Stratigraphy is the largest and oldest constituent scientific body in the International Union of Geological Sciences (IUGS). Its primary objective is to precisely define global units (systems, series, and stages) of the International Chronostratigraphic Chart that, in turn, are the basis for the units (periods, epochs, and age) of the International Geologic Time Scale; thus setting global standards for the fundamental scale for expressing the history of the Earth.​

ICS website: http://www.stratigraphy.org/

ICS_Chronostratigraphic_Chart2020-01.jpg

Chair
Prof. David A. T. Harper

Earth Sciences and Principal

Van Mildert College, Durham University

Durham DH1 3LE, United Kingdom

Tel.: +44-1913347143

Email: david.harper@durham.ac.uk

Vice-Chair
Brian T. Huber

Chairman, Department of Paleobiology,

Smithsonian Institution,

Washington, DC 20013-7012, USA

Tel.: +1-202-633-1328

Email: HUBERB@si.edu

Secretary General
Prof. Philip Gibbard 

Scott Polar Research Institute

University of Cambridge

Lensfield Road, Cambridge CB2 1ER, United Kingdom

Tel: +44 (0)1223 336540

Email: plg1@cam.ac.uk 

 

Translations of the International Chronostratigraphic Chart

  • American Spanish - version 2017/2: pdf

  • Basque - version 2015/1: pdf

  • Belgium Dutch - version 2018/8: pdf

  • Brazilian Portuguese - version 2017/2: pdf

  • Catalan - version 2018/8: pdf

  • Chinese - version 2018/8: pdf

  • French - version 2019/5: pdf

  • Finnish - version 2019/5: pdf

  • German - version 2017/2: pdf

  • Iberian Portuguese - version 2017/2: pdf

  • Japanese - version 2019/5: pdf

  • Lithuanian- version 2015/1: pdf

  • Netherlands Dutch - version 2018/8: pdf

  • Norwegian - version 2015/1: pdf

  • Russian - version 2017/2: pdf

  • Spanish - version 2018/8: pdf

  • Turkish - version 2018/8: pdf

Old versions of the International Chronostratigraphic Chart

Change Log file: txt

2019/5: pdf2018/8: pdf2018/7: pdf2017/2: pdf2016/10: pdf2016/4: pdf;

2015/1: pdf2014/10: pdf2014/2: pdf2013/1: pdf2012: pdf2010: pdf2009: pdf;

2008: pdf

Global chronostratigraphical correlation table for the last 2.7 million years

ICS_QuaternaryChart1.jpg

Ordovician Chronostratigraphic Chart

 

Correlation of regional chronostratigraphic schemes with the new global stages and series for the Ordovician System by Bergstrom et al. (2008)

  • version 2008: jpg

Ordovician Carbon Isotope Curve

 

by Bergstrom et al. (2008)

  • version 2008: jpg

Permian Time Scale

  • version 2012: jpg