Environmental Changes
| Holocene Epoch |
|---|
| ↑ Pleistocene |
| Holocene/Anthropocene |
|
- c. 8000 BC—Glaciers form the rock formation in present-day New Hampshire, formerly known as the Old Man of the Mountain
- c. 7911 BC—Series of seven massive volcanic eruptions give volcanic skies and lowered temperatures for several centuries (ending 7090 BC). Locations not known, but show in polar ice. (NatGeo1986–9)
- c. 7640 BC—Date theorized for impact of Tollmann's hypothetical bolide with Earth and associated global cataclysm
- c. 7220 BC—Eruption of Mount Edgecumbe, Alaska
- Large outflow of fresh water from Black Sea into Aegean Sea
Read more about this topic: 8th Millennium BC