OK, ‘fess up! What Really Killed the Dinosaurs?

(This artist’s rendering shows the Chicxulub crater at the time of the meteorite’s impact.Credit: NASA)

Asteroid Impact Weakens?

The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published in the Journal of the Geological Society on April 27, 2009.

The crater, discovered in 1978 in northern Yucutan and measuring about 180 kilometers (112 miles) in diameter, records a massive extra-terrestrial impact.

When spherules from the impact were found just below the Cretaceous-Tertiary (K-T) boundary, it was quickly identified as the “smoking gun” responsible for the mass extinction event that took place 65 million years ago.

It was this event which saw the demise of dinosaurs, along with countless other plant and animal species.

However, a number of scientists have since disagreed with this interpretation.

The newest research, led by Gerta Keller of Princeton University in New Jersey, and Thierry Adatte of the University of Lausanne, Switzerland, uses evidence from Mexico to suggest that the Chicxulub impact predates the K-T boundary by as much as 300,000 years.

Read the complete press release in New Blow for Dinosaur-Killing Asteroid Theory


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One Comment to “OK, ‘fess up! What Really Killed the Dinosaurs?”

  1. Ever notice how ground water drainage on soil with fine sediments from 6 feet up looks just like river beds from 5000 feet up. The pattern of erosion and areas of deposit build up are the same. Well look at the Taklamakan desert in China, (N 32.86113 E 68.40088), on any satellite image from Google or ACME mapper 2.0 or what ever you like. Does it look like a glancing blow from a comet or asteroid started directly east of the Taklamakan desert basin finally digging into the Earths crust propelling huge amounts of its dust and mineral deposits as far as Bagdad. What might be buried in the large deposits just west of the Himalayas? Is the sand in this desert different from other desert sands, because it was part of the asteroid or comet? Possible the entire impact site and debris field has been slightly distorted by the Himalayan Mountain Range. Or is it possible this impact happened before the this range was developed by the tectonic plates pushed up in this area creating the Himalayas? Crazy sure, but sometimes things are really what they appear. Ok start laughing and tearing me apart now but I still pose the question and will learn from any and all sources willing to constructively criticize and educate a beginner. Thanks.

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