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:[email protected]] On Behalf Of Paul via Meteorite-list Sent: Wednesday, February 07, 2018 8:39 PM To: [email protected] 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. ______________________________________________ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] https://pairlist3.pair.net/mailman/listinfo/meteorite-list ______________________________________________ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] https://pairlist3.pair.net/mailman/listinfo/meteorite-list
