6th 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)
  • c. 7000 BC: Beginning the Holocene climatic optimum.
  • c. 6000 BC: The land bridge connecting England with the rest of Europe disappears beneath the waters of the North Sea and the English Channel.
  • c. 5600 BC: According to the Black Sea deluge theory, the Black Sea floods with salt water. Some 3000 cubic miles (12,500 km³) of salt water is added, significantly expanding it and transforming it from a fresh-water landlocked lake into a salt water sea.

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