December 9, 2012

Extinctions update

Filed under: Extinctions — acagle @ 9:41 am

But not of the Holocene variety: Volcanoes, Not Meteorite, Killed Dinosaurs, New Study Suggests

Tens of thousands of years of lava flow from the Deccan Traps, a volcanic region near Mumbai in present-day India, may have spewed poisonous levels of sulfur and carbon dioxide into the atmosphere and caused the mass extinction through the resulting global warming and ocean acidification, the research suggests.

The findings, presented Wednesday (Dec. 5) here at the annual meeting of the American Geophysical Union, are the latest volley in an ongoing debate over whether an asteroid or volcanism killed off the dinosaurs about 65 million years ago in the mass die-off known as the K-T extinction.

It’s not a new theory but a new study.

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