[Rockhounds] Iridium in undersea crater confirms asteroid wiped out the dinosaurs

[Axel Emmermann]

Bryan,

both events are not so far apart on the geological timescale.
Most likely both events conspired to the demise of the dinosaurs.

Axel

-----Oorspronkelijk bericht-----
Van: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> Namens J Bryan Kramer
Verzonden: woensdag 24 februari 2021 23:38
Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors <rockhounds at rockhounds.drizzle.com>
Onderwerp: Re: [Rockhounds] Iridium in undersea crater confirms asteroid wiped out the dinosaurs

I watched a lecture about the Washington flood basalts a week ago and was interested to observe that the lecturer pinned the dinosaur extinction on those volcanos with not one word about Chicxulub. I knew some geologist were skeptical when the asteroid theory was announced by some physicists but I'm surprised to see the resistance still exists this many years later.

BK

““There exists a law…inborn of our hearts…by natural intuition. … If our lives are endangered by plots or violence or armed robbers or enemies, any and every method of protecting ourselves is morally right.””
Cicero

J Bryan Krämer       North Florida, USA
photos at: http://pbase.com/photoburner


On Wed, Feb 24, 2021 at 4:25 PM Kreigh Tomaszewski <kreigh at gmail.com> wrote:

> Strong evidence that the dinosaurs were killed-off 66 million years 
> ago by an asteroid hitting Earth has been found in Chicxulub crater 
> under the Gulf of Mexico. An international team has measured an 
> abundance of the rare element iridium in the crater and similarly high 
> concentrations of the element are known to occur in sediments laid 
> down at the time of the Cretaceous–Paleogene boundary (K–Pg) 
> extinction event, which saw many species on Earth vanish.
>
> Measuring 200 km across, the Chicxulub crater is believed to have been 
> created by an 11 km-wide asteroid crashing into Earth. The impact 
> would have sent vast amounts of vaporized rock into the atmosphere, 
> blocking out the Sun and creating a winter that could have lasted 
> lasted several decades. The result, scientists believe, was the mass 
> extinction of 75% of species on Earth including the non-flying dinosaurs.
>
>
> https://physicsworld.com/a/iridium-in-undersea-crater-confirms-asteroi
> d-wiped-out-the-dinosaurs/ 
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