[meteorite-list] Seafloor Data Point to Global Volcanism after Chicxulub Impact

From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Wed, 7 Feb 2018 23:11:07 -0600
Message-ID: <mailman.14.1518067272.22474.meteorite-list_at_meteoritecentral.com>

Paul, List,

The real mystery about Chicxulub
is its SIZE for so recent a date.
Or another way of putting it is to
ask how an object that big could
keep crossing the Earth's orbit for
all those billions of years without
deliverng us a good smack?

There's a theory that Chixcy is a
by-product of the breakup of the
large asteroid 298 Baptistina about
160 million years ago, and Chixcy
got tossed our way and managed
to nail us in only 100 million years.
<https://www.nature.com/articles/nature06070>

That I can believe...

It's an interesting notion, and it
models well. I quote it: "...lines of
evidence, however, suggest that
the impact flux from kilometre-
sized bodies increased by at least
a factor of two over the long-term
average during the past ?100?Myr."

I see that the journal Nature
wants you to buy the article, but
you can download a PDF of the
actual article for free from here:
http://www.boulder.swri.edu/~bottke/Reprints/Bottke_2007_Nature_449_48_Baptistina_KT.pdf

Knowledge wants to be free,
doesn't it?


Sterling Webb
--------------------------------------------
-----Original Message-----
From: Meteorite-list [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Paul via Meteorite-list
Sent: Wednesday, February 07, 2018 8:39 PM
To: Meteorite-list at meteoritecentral.com
Subject: [meteorite-list] Seafloor Data Point to Global Volcanism after Chicxulub Impact

The dinosaur-murdering asteroid maybe also triggered an underwater volcano meltdown. Why pick just one flavor of apocalypse? By Rachel Becker, The Verge, Feb 7, 2018 https://www.theverge.com/2018/2/7/16988112/asteroid-chicxulub-mass-extinction-dinosaurs-underwater-volcanoes-magma

Seafloor data point to global volcanism after Chicxulub meteor strike, University of Oregon, February 7, 2018 https://www.eurekalert.org/pub_releases/2018-02/uoo-sdp020518.php
https://around.uoregon.edu/content/one-two-punch-may-have-helped-deck-dinosaurs

The paper is;

Joseph S. Byrnes and Leif Karlstrom, 2018, Anomalous K-Pg-aged seafloor attributed to impact-induced mid-ocean ridge magmatism Science Advances 07 Feb 2018:
Vol. 4, no. 2, eaao2994 DOI: 10.1126/sciadv.aao2994
http://advances.sciencemag.org/content/4/2/eaao2994

Yours,

Paul H.

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Received on Thu 08 Feb 2018 12:11:07 AM PST