The ICS International Chronostratigraphic Chart

The International Commission on Stratigraphy (ICS) has a long tradition of producing international charts that communicate higher-order divisions of geological time and actual knowledge on the absolute numerical ages of their boundaries. The primary objective of ICS is to define precisely a global standard set of time-correlative units (Systems, Series, and Stages) for stratigraphic successions worldwide. These units are, in turn, the basis for the Periods, Epochs and Ages of the Geological Time Scale. Setting an international global standard is fundamental for expressing geological knowledge. It is also of considerable pragmatic importance as it provides the framework through which regional-scale higher-resolution divisions can be linked, equated and collated. This is a status update on the International Chronostratigraphic Chart and the ICS website www.stratigraphy.org.

[1]  W. B. Harland,et al.  A Geologic time scale , 1982 .

[2]  J. Ogg,et al.  The Concise Geologic Time Scale , 2008 .

[3]  Amos Salvador,et al.  International Stratigraphic Guide: A Guide to Stratigraphic Classification, Terminology, and Procedure , 1996 .

[4]  H. D. Hedberg.  International stratigraphic guide : a guide to stratigraphic classification, terminology, and procedure , 1976 .

[5]  Denys B. Smith.  The Permian period , 2019, Geological Society, London, Special Publications.

[6]  V. Davydov,et al.  Proposal for base-Kungurian GSSP , 2012 .

[7]  James G. Ogg,et al.  A Geologic Time Scale 2004: CONCEPTS AND METHODS , 2004 .

[8]  C. Spötl,et al.  The Global Boundary Stratotype Section and Point (GSSP) of the Carnian Stage (Late Triassic) at Prati di Stuores/Stuores Wiesen Section (Southern Alps, NE Italy) , 2012 .

[9]  B. Schmitz,et al.  The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain , 2011 .

[10]  D. Erwin,et al.  Calibrating the End-Permian Mass Extinction , 2011, Science.

[11]  John W. Cowie,et al.  Guidelines and Statues of the International Commission on - Stratigraphy (ICS) , 1986 .

[12]  Olaf Michelsen,et al.  Revised guidelines for the establishment of global chronostratigraphic standards by the International Commission on Stratigraphy (ICS) , 1996 .

[13]  V. Davydov,et al.  Quantitative radiometric and biostratigraphic calibration of the Pennsylvanian–Early Permian (Cisuralian) time scale and pan-Euramerican chronostratigraphic correlation , 2012 .