Tuesday, April 2, 2013

Re: [Geology2] Here We Go Again--Alvarez Theory on Dinosaur Die-Out Upheld: Experts Find Asteroid Guilty of Killing the Dinosaurs



Bre,

That's not ignroance-that's a very good question. And I have an answer. Having seen the layer myself, which is, as you pointed out, an extremely small layer, the layer itself denotes a catastrophic event-only! The fossils would naturally be found immediately after or above that thin layer. The blast sent a fast retort of debris and iridium across the planet and burned everything it touched. The layer that I witnessed was about the width of my fingernail in places, and up to two inches in others. The blast layer would naturally not hold fossils as it would destroy everything it touched. Only when the blast had cleared and a stable environment returned could dino fossils be found.

Lin


On Mon, Apr 1, 2013 at 9:03 PM, Breanna Gardner <geolover49@gmail.com> wrote:
 

Pardon my ignorance, I keep read that there hasn't been any dinosaur fossils found in the impact layer, fossils have only been found below the iridium layer, but nothing in it and that it is an extremely small layer.  If it caused the dinosaur extinction why no fossils?

Bre


On Thu, Mar 28, 2013 at 4:49 AM, Lin Kerns <linkerns@gmail.com> wrote:
 

Alvarez Theory on Dinosaur Die-Out Upheld: Experts Find Asteroid Guilty of Killing the Dinosaurs

March 09, 2010
Lynn Yarris

Additional Information

The new Science paper by Peter Schulte, et al, is titled "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary." It can be read (with subscription) here:

http://www.sciencemag.org/cgi/content/abstract/327/5970/1214

The original Science paper by Luis Alvarez, et al, can be read at http://www.sciencemag.org/cgi/content/abstract/208/4448/1095

http://newscenter.lbl.gov/feature-stories/2010/03/09/alvarez-theory-on-dinosaur/
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