HUMANPAST.NET

Environment                  80,000 BC
Africa
Southwest Asia
Egypt
Indus Valley
China
Europe
South America
Mesoamerica
North America
Other

In General

Hapgood concluded: 'Thus we are able to say that warm conditions of the Arctic Archipelago of Canada persisted for the entire duration of the Wisconsin glaciation, from 40,000 years ago to the establishment of modern conditions.' Hapgood presented evidence to demonstrate, in the same way, that the North Pole moved from the Yukon district to the Greenland Sea about 80,000 years ago, then from the Greenland Sea to Hudson Bay about 50,000 years ago, and from Hudson Bay to its present position about 17,000 to 12,000 years ago. (123)

It appears that, in round figures, the poles remain stationary for periods of about 30,000 years, then move around for 6,000 years, then again stay put for 30,000 years, and so on. Scientists have established that the last four rounds of the poles started 120,000 years ago when the North Pole installed itself in the territory of Yukon in Canada at 63° Nand 135° W; then it went to the Greenland Sea at 72° N and 10° E about 84,000 years ago, moved from 54,000 until 48,000 years ago and settled in the middle of Hudson Bay at 60° N and 83° W; it rested there for 30,000 years; then wandered again from about 18,000 to about 12,000 years ago when it came to its present location. Simultaneously the South Pole went through similar gyrations but in the opposite direction. We have to note that its three previous locations were in their turn in the southern part of the Indian Ocean between Australia and the Antarctic itself. Only the last movement 12,000 years ago brought the South Pole to the middle of the great continent of Antarctica.(141)

What is now clear is that during the last ice age, and the period that followed it, the climate was much more chaotic than it has been in recent millennia. Generally, the climate was much more variable. Sudden changes occurred from time to time. Collapse of parts of the ice sheets, or release of meltwater lakes that built up behind the ice, led to cataclysmic changes. Armadas of icebergs or floods of icy freshwater swept out into the North Atlantic altering the circulation of the ocean at a stroke and with it the climate of the neighbouring continents. With a flick of the climatic switch, Europe and much of North America could be plunged back into icy conditions, having only just emerged from the abyss of the preceding millennia. Conversely, the stability of the glacial conditions could be interrupted by a re-establishment of the flow of warm water to higher latitudes in the North Atlantic, bringing surprising temporary warmth to the northern continents. (145)

...the isotopic temperature records show some 20 interstadials, ...between 15 and 100 kya. Typically the events start with an abrupt warming of Greenland of some 5 to 10°C over a few decades or less. This warming is followed by a gradual cooling over several hundred years, and occasionally much longer. This cooling phase often ends with an abrupt final reduction of temperature back to cold ('stadial') conditions. (145)

Changes in the sea level during the last 100 kyr. (145)

The climate then warmed up around 80 kya with the Odderade interstadial. Then, in terms of sudden climate change, the real action appears to have started around 74 kya. This timing is of particular interest as it coincides with some suggested dates for the movement of modern humans out of Africa.  (145)

Africa

 In the Middle East the most important consequence of the cold conditions around 87 kya was extreme desiccation. The expansion of the deserts here may well have driven out any humans living there at the time. What little evidence there is of climatic conditions in Africa at this time also points to drier conditions. The record of desert-dune formation across southwestern Africa shows that at least part of this period was extremely arid. Desert conditions seem to have existed over a large area west of about 15E, and south of about 18S. (145)

Southwest Asia

 In the Middle East the most important consequence of the cold conditions around 87 kya was extreme desiccation. The expansion of the deserts here may well have driven out any humans living there at the time. What little evidence there is of climatic conditions in Africa at this time also points to drier conditions. The record of desert-dune formation across southwestern Africa shows that at least part of this period was extremely arid. Desert conditions seem to have existed over a large area west of about 15°E, and south of about 18°S. (145)

Egypt

 

Indus Valley

 

China

 

Europe

 

South America

 

Mesoamerica

 

North America

 Several lines of solid evidence suggest that during the last ice age the North Pole was located in or near Hudson Bay. ...the best guess for the site of the pole seems to be approximately 60 degrees North Latitude and 83 degrees West Longitude. The first line of evidence that the last North American ice cap was a polar ice cap is based on the shape, size, and peculiar geographical location of the ice sheet. (132)

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