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Geology, Palaeontology & Archaeology / How much pollution does a volcano produce?
« on: 09/06/2009 06:13:35 »
The largest volcanic eruption since the rise of modern humans, Homo sapiens, is the great eruption of Toba, in Sumatra, about 71,000 years ago. It produced some 2800 cubic kilometers of ash and may have reduced the world's human population to only 10,000. The eruption of Toba is hypothesized by some scientists to have decimated the early human inhabitants of S Asia. The eruption lasted perhaps two weeks, but the ensuing "volcanic winter" resulted in a decrease in average global temperatures by 3 to 3.5 degrees Celsius for several years.
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