Neogene

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Neogene Period
23.03–2.588 million years ago
Mean atmospheric O
2
content ower period duration
c. 21.5 vol %[1][2]
(108 % of modern level)
Mean atmospheric CO
2
content ower period duration
c. 280 ppm[3][4]
(1 times pre-industrial level)
Mean surface temperature ower period duration c. 14 °C[5][6]
(0 °C above modern level)
Key events in the Neogene
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-24 —
-22 —
-20 —
-18 —
-16 —
-14 —
-12 —
-10 —
-8 —
-6 —
-4 —
-2 —
0 —
Holocene begins 11.7 ka ago
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 2.588 Mya.

References[eedit | eedit soorce]

  1. Image:Sauerstoffgehalt-1000mj.svg
  2. Image:OxygenLevelsThroughEarthHistory.png
  3. Image:Phanerozoic Carbon Dioxide.png
  4. Image:CO2LevelsThroughEarthHistory.png
  5. Image:All palaeotemps.png
  6. Image:TemperatureLevelsOverEarthHistory.png
  7. 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.