[FPSPACE] Three recent large fatal impacts

[E.P. Grondine]

Hi and Hello - 
 
I don't know if this was ever posted to fpspace, so here are the links:
 
Dr. Firstone's agu abstract on the iron impacts:http://ie.lbl.gov/mammoth/impact.htmland even better, his poster:http://ie.lbl.gov/mammoth/AGUSF_poster_2.gifThis looks to me like 2 separate iron impacts, one in Alaska about 32,500 BCE,  another in Siberia ca. 24,000 BCE.  Dr. Firestone has a team out looking for the Alaskan impact crater.These impacts are different than the cometary impact(s) at 10,900 BCE (the third impact) - the impactthat Kenneth et al. evidenced with the impactites, and that it appears the First Peoples here remembered.One interesting question is whether neutrons and protons are being released in large hypervelocity impacts, leading to increases in 14C and 10Be. BTW - Mars is a cold irradiated sulfuric acid hell hole with a near vacuum for an atmosphere, and in no way resembles Arizona or Canada.E.P. GrondineMan and Impact in the Americas
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