Neogene
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| Neogene Period 23.03–2.58 million years aby | |
| Mean atmospheric O 2 content ower period duration |
c. 21.5 vol % (108 % o modren level) |
| Mean atmospheric CO 2 content ower period duration |
c. 280 ppm (1 times pre-industrial level) |
| Mean surface temperatur ower period duration | c. 14 °C (0 °C abuin modren level) |
Key events in the Neogene -24 — – -22 — – -20 — – -18 — – -16 — – -14 — – -12 — – -10 — – -8 — – -6 — – -4 — – -2 — – 0 — An approximate timescale o key Neogene events. Vertical axis: millions o years ago. | |
The Neogene, accordin tae current scienteefic consensus, is a geologic period an seestem that spans 20.45 million years frae the end o the Paleogene Period 23.03 million years ago (Mya) tae the beginnin o the present Quaternary Period 2.58 Mya.
References[eedit | eedit soorce]
- ↑ Krijgsman, W.; Garcés, M.; Langereis, C. G.; Daams, R.; Van Dam, J.; Van Der Meulen, A. J.; Agustí, J.; Cabrera, L. (1996). "A new chronology for the middle to late Miocene continental record in Spain". Earth and Planetary Science Letters. 142 (3–4): 367–380. Bibcode:1996E&PSL.142..367K. doi:10.1016/0012-821X(96)00109-4.
