3rd Millennium BC - Environmental Changes

Environmental Changes

Holocene Epoch
↑ Pleistocene
Holocene/Anthropocene
Preboreal (10.3 ka – 9 ka),
Boreal (9 ka – 7.5 ka),
Atlantic (7.5 ka – 5 ka),
Subboreal (5 ka – 2.5 ka)
Subatlantic (2.5 ka – present)
  • Major migration of Central Saharans into West Africa possibly due to climate change starting in 4th millennium BC.

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