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A BRIEF INTRODUCTION TO THE "INTERNATIONAL STRATIGRAPHIC CHART"(2008)

ZHANG Sen-gui,ZHANG Yun-bai and YAN Hui-jun Editorial Office of Journal of Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Scieoces,Nanjing 210008  
As a successor to the "International Stratigraphic Chart"(2004),the "International Stratigraphic Chart"(2008)was constructed by the International Commission on Stratigraphy(ICS)in 2008.Some updates in the new chart may be outlined as follows:the Quaternary was readopted as a formal Period/System of the Cenozoic;chronostratigraphic frameworks of the Lower Palaeozoic and Precambrian were greatly refined;14 new GSSPs were formalized,and some radiometric ages were revised.To aid correlations using magnetostratigraphy and eustatic oscillations,the "International Stratigraphic Chart"(2008)is present together with the "Geologic Time Scale"(2008).
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