Chattian
Second Age of the Oligocene Epoch / From Wikipedia, the free encyclopedia
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The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/Series. It spans the time between 27.82 and 23.03 Ma. The Chattian is preceded by the Rupelian and is followed by the Aquitanian (the lowest stage of the Miocene).[5]
Quick Facts Chronology, Formerly part of ...
Chattian | |||||||||||||
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27.82 – 23.03 Ma | |||||||||||||
Chronology | |||||||||||||
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Formerly part of | Tertiary Period/System | ||||||||||||
Etymology | |||||||||||||
Name formality | Formal | ||||||||||||
Usage information | |||||||||||||
Celestial body | Earth | ||||||||||||
Regional usage | Global (ICS) | ||||||||||||
Time scale(s) used | ICS Time Scale | ||||||||||||
Definition | |||||||||||||
Chronological unit | Age | ||||||||||||
Stratigraphic unit | Stage | ||||||||||||
Time span formality | Formal | ||||||||||||
Lower boundary definition | LAD of the Planktonic Foraminifer Chiloguembelina (Base of Foram Zone P21b) | ||||||||||||
Lower boundary GSSP | Monte Cagnero, Central Apennines, Italy 43.6466°N 13.4677°E / 43.6466; 13.4677 | ||||||||||||
Lower GSSP ratified | September 2016[3] | ||||||||||||
Upper boundary definition |
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Upper boundary GSSP | Lemme-Carrosio Section, Carrosio, Italy 44.6589°N 8.8364°E / 44.6589; 8.8364 | ||||||||||||
Upper GSSP ratified | 1996[4] |
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