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GSSP Table - Precambrian

Global Boundary Stratotype Section and Point (GSSP) of the International Commission of Stratigraphy

Cenozoic Era Mesozoic Era Paleozoic Era Precambrian All Periods
Stage Age (Ma) CGTS 2008 GSSP Location Latitude, Longitude Boundary Level Correlation Events Status Reference
Proterozoic Eon
Neoproterozoic Era
Ediacaran System 635 Enorama Creek, Flinders Ranges, South Australia 31.3314°S 138.6334°E base of the Marinoan cap carbonate (1) rapid decay of Marinoan ice sheets and onset of distinct cap carbonates throughout the world, and (2) the beginning of a distinctive pattern of secular changes in carbon isotopes. Ratified 1990 Lethaia 39, p.13-30, 2006
Cryogenian System 850 Defined chronometrically; but will be replaced by GSSP. First glacial episode occurred after 750 Ma Ratified 1990 Episodes 14/2,1991
Tonian System 1000 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Mesoproterozoic Era
Stenian System 1200 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Ectasian System 1400 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Calymmian System 1600 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Paleoproterozoic Era
Statherian System 1800 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Orosirian System 2050 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Rhyacian System 2300 Defined chronometrically Ratified 1990 Episodes 14/2,1991
Siderian System 2500 Defined chronometrically, but it will be replaced by GSSP Ratified 1990 Episodes 14/2,1991
Archean Eon
Neoarchean Era 2800 Defined chronometrically Subcomm. decision 1996, but not submitted to ICS Informally in Episodes 15/2, 1992
Mesoarchean Era 3200 Defined chronometrically Subcomm. decision 1996, but not submitted to ICS Informally in Episodes 15/2, 1992
Paleoarchean Era 3600 Defined chronometrically Subcomm. decision 1996, but not submitted to ICS Informally in Episodes 15/2, 1992
Eoarchean Era 4000 Base is not defined Subcomm. decision 1996, but not submitted to ICS Informally in Episodes 15/2, 1992
Hadean Eon 4600 Formation of planet Earth. Informal term