Global Boundary Stratotype Section and Point
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 The 'golden spike' (bronze disk in the lower section of the image) or 'type section' of the Global Boundary Stratotype Section and Point (GSSP) for the base of Ediacaran period. |
A Global Boundary Stratotype Section and Point, abbreviated GSSP, is an internationally agreed upon stratigraphic section which serves as the reference section for a particular boundary on the geologic time scale. The effort to define GSSPs is conducted by the International Commission on Stratigraphy, a part of the International Union of Geological Sciences. Most, but not all, GSSPs are based on paleontological changes. Hence GSSPs are usually described in terms of transitions between different faunal stages, though far more faunal stages have been described than GSSPs. The GSSP definition effort commenced in 1977. As of 2004, 45 of the 96 GSSPs required have been approved.
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| The Global Boundary Stratotype Section and Point (... The Global Boundary Stratotype Section and Point (GSSP) www.stratigraphy.org/over.htm - Web |
| Chart of The Global Boundary Stratotype Sections a... Chart of The Global Boundary Stratotype Sections and Points (GSSP) stratigraphy.science.purdue.edu/charts/chart.html - Web |
| Table of Global Boundary Stratotype Sections and P... Table of Global Boundary Stratotype Sections and Points (GSSPs) with links to summary pages for each one stratigraphy.science.purdue.edu/gssp/index.php?parentid=all# - Web |
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| Geotime chart displaying geologic time periods com... Geotime chart displaying geologic time periods compared to the fossil record www.rocksandminerals.com/geotime/geotime.htm - Web |
