Not by Fire but by Ice


Discover What Killed the Dinosaurs . . . and Why it Could Soon Kill Us


Did climate change kill the dinosaurs?

Forget the asteroid

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28 Mar 10 - German paleontologist Michael Prauss, who studied 65-million-year-old fossils in the Brazos River area of Texas, thinks long-term climate change, rather than a rogue asteroid, killed the dinosaurs.

Although a minority of paleontologists remain skeptical, most now agree that the asteroid's crash blasted debris into the atmosphere that blocked out the sun for up to a year. (See 'Dream Team' Agrees Huge Asteroid Killed Dinosaurs)

But Prauss disagrees.

Writing in next month's edition of the journal Palaeogeography, Palaeoclimatology, Palaeoecology and working with Princeton paleontologist Gerta Keller -- a well-known critic of the Chicxulub theory -- Prauss maintains that radical changes to the flora and fauna of the era began long before the Chicxulub impact (Chicxulub means tail of the devil).
     I've written about Gerta Keller several times before. See links below.

Prauss argues that the impact was just one in a chain of catastrophic events that caused substantial environmental upheaval.

One of those events was the massive, years-long volcanic activity in what is now the Deccan Plateau of India, which, like Chicxulub, is used by paleontologists to separate the Cretaceous period from the Paleogene period.

But doubters persist. If the asteroid strike was such a doomsday event, how were some classes of species able to survive and even thrive, asks Norman MacLeod of the Natural History Museum in London.

Since there's no direct evidence showing what killed the dinosaurs, the debate is likely to continue.

See entire article:|aim|dl1|link3|
Thanks to David Bronzich for this link

     I agree that the Deccan Traps could have triggered the dinosaur extinction. 

     The Deccan Traps, a "volcanic flood," buried huge portions of India under
     lava about one mile deep over an area half the size of Australia.
     But that wasn't all. According to paleontologist Dewey McLean (personal
     communication), a good portion of the Deccan Traps was submarine.

     Wouldn’t it make sense that thousands of cubic miles - cubic miles! - of
     lava measuring 2,150 degrees hot, ten times the boiling point. pouring into
     the seas might have heated them just a tad?

     That's exactly what happened. Ocean temperatures at the dinosaur
     extinction rose by 14F to 22F.

     As the lava poured into the seas, te oceans must have boiled, literally
     boiled, sending untold amounts of moisture into skies.
     The increased evaporation would have sent excess moisture rose into the
     skies, skies which had already cooled because of the ash from the above-
     water eruptions. This lead to massive increases in snowfall, and to an ice age.

     Warmer oceans and colder skies, a deadly combination . . . which is what I
     propose in Not by Fire but by Ice.

See also Volcanic Eruptions Killed Dinosaurs

See aso Volcanism Killed Dinosaurs

See also Maybe an asteroid didn't kill the dinosaurs




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