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'Brief' ice age actually lasted 30M years
Leicester, England (UPI) Jun 18, 2009 British scientists have determined an ice age occurring about 440 million years ago that's been regarded as a brief period actually lasted 30 million years. University of Leicester geologists said their findings suggest that during the ancient ice age, global warming was curbed through the burial of organic carbon that eventually led to the formation of oil -- including the "hot shales" of North Africa and Arabia that constitute the world's most productive oil source rock. The ice age has been named "the Early Palaeozoic Icehouse" by university geologist Alex Page and his colleagues in a paper published as part of a collaborative project between the University of Leicester and the British Geological Survey. The researchers said the ice age occurred during the Ordovician and Silurian Periods, part of the Early Palaeozoic Era, in an interval that saw a major diversification of early marine animals including trilobites and primitive fish, as well as the emergence of the first land plants. Page presented his findings Wednesday during a lecture series at the university. Share This Article With Planet Earth
Related Links Beyond the Ice Age
Lifestyle melts away with Uganda peak snow capBundibugyo, Uganda (AFP) June 15, 2009 When Yasamu Maate was a younger man, he could stand in his garden on a clear, cloudless morning and stare at the ice caps on Uganda's Rwenzori Mountains. But on a recent Friday the 87-year-old lamented the loss of those ice caps, which have all but disappeared, as the world around him has gotten warmer. "We used to use the snow and ice as our guide," he said, sitting on a roadside chair ... read more |
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