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Volcanoes May Have Caused Mass Extinctions?
Hugh Pickens writes "According to recent research, huge amounts of sulphur dioxide released by volcanic eruptions may have had more to do with wiping out dinosaurs than the meteorite strike at Chicxulub on Mexico's Yucatán Peninsula. Marine sediments drilled from the Chicxulub crater have revealed that that the mass extinctions occurred 300,000 years after Chicxulub hit Earth. The Deccan volcanism was a long cumulative process that released vast amounts of greenhouse gases into the atmosphere. '"On land it must have been 7-8 degrees warmer," says Princeton University paleontologist Gerta Keller. "The Chicxulub impact alone could not have caused the mass extinction, because this impact predates the mass extinction."' Keller also postulates a second larger and still unidentified meteor strike after Chicxulub, that left the famous extraterrestrial layer of iridium found in rocks worldwide and pushed earth's ecosystem over the brink. But where's the crater? "I wish I knew," says Keller."
Maybe the meteor impact caused the volcanos to start up.
Gerta Keller... *sigh*
I think everyone should take her research with quite a few grains of salt, she has been in a bitter fight for years over this issue and she has been quite obnoxious when it comes to the topic of Chicxulub and mass extinction. Until this is confirmed by independent research, nobody should take it for gold.
If you mod me down, I *will* introduce you to my sister!
And I'll keep telling it, and others like it until the groups who subscribe to such theories STOP pushing it on everyone else (ala school boards calling evolution into question, government policy decisions being based on it, etc.). I believe that such policies are dangerous as they are pushing our educational system backwards, thereby potentially triggering a landslide of bad side effects (intolerance, war, and damage to the economy, to name a few). You'll notice that I have never, nor will I ever, make an Amish (or other such group) joke. I politely disagree with their position, but fully recognize and respect their right to practice those beliefs. Its when those beliefs start being rammed down my throat that I take issue...