Friday, February 24, 2006


Fossil wood gives vital clues to ancient climates

Fossil wood gives vital clues to ancient climates: "New research into a missing link in climatology shows that the Earth was not overcome by a greenhouse period when dinosaurs dominated, but experienced rapid fluctuations in temperature and sea level change that resulted in a balance of the global carbon cycle. The study is being published in the March issue of Geology.

'Most people think the mid-Cretaceous period was a super-greenhouse,' says Darren Gr�cke, assistant professor and Director of the Stable Isotope Biogeochemistry Laboratory at McMaster University. 'But in fact it was not to dissimilar to the climates over the past 5 million years.'"

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