Not by Fire but by Ice
THE NEXT ICE AGE - NOW!
Discover What Killed the Dinosaurs . . . and Why it Could Soon Kill Us
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Below the layer of iridium, paleontologists find a riot of thriving species in the fossil record; above the layer, more than 65% of all species disappear.
But a new study published in the Journal of the Geological Society shows that the asteroid impact and dinosaur extinction may have occurred hundreds of thousands of years apart.
The controversial paper was written by geoscientists Gerta Keller of Princeton University and Thierry Addate of the University of Lausanne, in Switzerland.
Analyzing fossils at numerous sites in Mexico, including El Peñón, near the supposed impact crater, Keller and Addate counted 52 distinct species just below the iridium layer — and the same 52 species above it. The die-offs didn’t appear until 30 feet higher in the sedimentary record, some 300,000 years later.
"Not a single species went extinct as a result of the Chicxulub impact," says Keller.
So if the Chicxulub asteroid didn't kill the dinosaurs, what did?
It is possible that some kind of atmospheric haze blocked the sun, making the planet too cold for the dinosaurs, Keller and Addate agree. But it didn't have to come from an asteroid. Rather, they say, the source might have been massive volcanoes, like the ones that created India’s Deccan Traps.
I agree with Keller and Addate
that the Deccan Traps* could have
paleontologist Dewey McLean (personal communication),
Warmer oceans and colder skies,
a deadly combination . . . which is
See entire article by
* More than two million cubic
kilometers of lava poured out of the
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