moi621 (imported) wrote: Mon Oct 25, 2010 4:40 pm
I have read away, there. FIRST, before posing the problem to the brainiacs and A-1, here.
No luck! Let me know if A-1 finds something to answer the question. Or others too, please.
Consider, we can find a map of the northern hemisphere during the last ice age easily enough.
But, I have not been able to locate a map of the antarctic ice cap say, 50,000 years ago.
Moi
Another example of Northern bias
You can see several maps of the progress of the Ice Age in Brian Fagan's The Complete Ice Age, published by Thames and Hudson. Maps of the entire planet and its ice sheets appear on pages 67 and 120-21 (at ca. 30,000 BP). The severest Ice Age was about 18,000 years BP, and earlier one at 24,000 BP, one at 30,000 BP and one at 38,000 BP. 50,000 years BP, the climate was relatively mild, but there was a minor cooling at 54,000 BP roughly as severe as the Younger Dryas of 10,000 BP.
Because most of the southern land mass is in the tropical zone between the equator and the Tropic of Capricorn, the ice sheets had little effect in the souther hemisphere except for Antarctica and the rather tall Andes mountains of South America, the only substantial land masses south of the tropics. There is a map of the maximum extent of the ice sheets in South America at 18,000 BP on page 68.
The text is also worth reading.
if sometimes, North and South trade off as opposed to synchronicity of ice capping and melt.if sometimes, North and South trade off as opposed to synchronicity of ice capping and melt.
