Quaternary

Quaternary Period 2.58–0 million years aby PreЄ Є O S D C P T J K Pg N
Mean atmospheric O ₂ content ower period duration	c. 20.8 vol % (104 % o modren level)
Mean atmospheric CO ₂ content ower period duration	c. 250 ppm (1 times pre-industrial level)
Mean surface temperatur ower period duration	c. 14 °C (0 °C abuin modren level)

Quaternary is the current an maist recent o the three periods o the Cenozoic Era in the geologic time scale o the Internaitional Commission on Stratigrafie (ICS).^[1]

References[eedit | eedit soorce]

↑ Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X. "International Chronostratigraphic Chart 2013" (PDF). stratigraphy.org. ICS. Retrieved 15 Juin 2014.