A new study suggests that a drop in carbon dioxide (CO2) levels seems to
have triggered Antarctic ice sheet formation.Roughly a 40 percent
decrease in CO2 occurred prior to and during the rapid formation of a
mile-thick ice sheet over the Antarctic approximately 34 million years
ago.The long-held, prevailing theory known as "Southern Ocean gateway
opening" is not the best explanation for the climate shift that occurred
during the Eocene-Oligocene transition when the Earth's polar regions
were … Read more at candidshare.com
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