By Dr. Jessie Mercay
posted by Ganesh
In 15,000 BC the earth was a cold planet – an Ice making machine. The planet was in its fifth ice age. The glacial maximum (coldest period with maximum icecaps and lowest seal level) had occurred 2000 – 3000 years earlier. The world was colder and dryer and far less hospitable than today. The enormous ice sheets held massive amounts of water lowering sea levels. The world’s oceans were more than 460 feet lower than what they are today. This resulted in exposure of continental shelves, joined landmasses, and extensive coastal plains. (Fleming, et. al. (1998). “Refining the eustatic sea-level curve since the Last Glacial Maximum using far – and intermediate-field sites”. Earth and Planetary Science Letters 163 (1-4): 327-342).
The geography of the earth was significantly different from the present day and humanity lived primarily in a small concentrated area of…
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