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

[Andrew Turner]

Don't see how the flood basalts in Washington (my home area - Tri Cities) could have contributed much to a mass extinction event and surely not more than a meteorite/comet impact or even explosive, caldera-like eruptions.  The flood basalts weren't very explosive events, they are basaltic (similar to Hawaii) by definition.  Not very viscous and free-flowing.  So, they would definitely affect the nearby area and cause a temperature increase in the immediate region, but they most likely wouldn't have a "nuclear winter" or large-scale global effect of a meteorite impact.  That time period was very active for volcanoes, but flood basalts are a bit different phenomena.

Andrew Turner


________________________________
From: Rockhounds <rockhounds-bounces at rockhounds.drizzle.com> on behalf of Tim Fisher <nospam at orerockon.com>
Sent: Wednesday, February 24, 2021 3:57 PM
To: 'Rockhounds at drizzle.com: A mailing list for rock and gem collectors' <rockhounds at rockhounds.drizzle.com>
Subject: Re: [Rockhounds] Iridium in undersea crater confirms asteroid wiped out the dinosaurs

Was that Nick Zentner? That would really surprise me.

Tim Fisher
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-----Original Message-----
From: Rockhounds [mailto:rockhounds-bounces at rockhounds.drizzle.com] On
Behalf Of Axel Emmermann
Sent: Wednesday, February 24, 2021 3:02 PM
To: 'Rockhounds at drizzle.com: A mailing list for rock and gem collectors'
Subject: Re: [Rockhounds] Iridium in undersea crater confirms asteroid wiped
out the dinosaurs

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

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