[meteorite-list] ARCTIC IRONS - the hunt is on

From: Michael Farmer <meteoriteguy_at_meteoritecentral.com>
Date: Wed, 26 Dec 2007 07:44:52 -0800 (PST)
Message-ID: <660464.97369.qm_at_web33114.mail.mud.yahoo.com>

Why would a crater the size of Canyon Diablo pepper
Mammoths in both Siberia and Alaska?
Meteor crater is big, but my god, you would not have
been killed if you were 30 or 40 miles away, and you
think it would shower iron with enough force to damage
things thousands of miles away? I am confused here.
Michael Farmer
--- "E.P. Grondine" <epgrondine at yahoo.com> wrote:

> Hi Sterling, all -
> Hopefully now that Jason and Darryl have stopped
> their
> harassment, we can begin to define the problem space
> for the arctic iron hunt. I don't intend to let
> either
> of them waste another minute of my time, and would
> recommend to others here that they follow a similar
> course.
> Going back to Firestone's piece in the Mammoth
> Trumpet
> in March, 2001, which Sterling provided us the link
> to
> (Sterling, would you please do so again), we see
> spikes in Carbon 14 production in the accepted radio
> calibration curve INTCAL98.
> Running through time, the first of these spikes at
> (by
> eyeball) 46,000 BCE may be associated with the
> Barringer Crater Impact.
> The next spike at 40,000 BCE is unassociated with
> any
> impact crater that I know of. There may be one, it's
> simply that I don't know it or can't recall it; if
> anyone knows of a candidate impact do tell. I seem
> to
> vaguely remember that there were South American
> impactites found at Rio Cuarto which did not come
> from
> the 2,360 BCE event, but came from a much earlier
> one.
> Does anyone here know of any impact or impactite
> which
> might match?
> The next spike at 31,000 BCE appears to be from the
> Mammoth Pepperer Impact. Judging from the
> calibration
> chart, this crater should have been just a tad
> bigger
> than Barringer Crater, if the iron hit land. Of
> course, that land is tundra, so the crater edges
> most
> likely will not remain sharp today.
> >From the BBC report, we see that the most intense
> peppering occurred in Alaska, where the mammoth
> tusks
> were found (no longer a Calgary shop, as per earlier
> reports). There was some doubt among Firestone's
> team
> as to whether the mammoths died at the time of
> impact,
> and some of them were clearly hoping the tusks were
> peppered later at 10,900 BCE. Remarkably, they did
> not
> seem to understand the difference in impactites
> coming
> from an iron impact and a comet impact.
> A healed ox skull from Siberia shows that the iron
> peppering was less intense there - the ox survived.
> Looking at the ice sheet maps from 31,000 BCE, while
> this was the Laurentide ice maximum, strangely
> enough
> Alaska was ice free in its north - they know this
> from
> pollen samples. The mammoth were eating something to
> live, after all. This was what was left of an
> earlier
> ice free "corridor", which would reopen again later.
> Thus the possibility of a large undiscovered crater
> somewhere in that ice free area of Alaska remains,
> no
> matter what kinds of tantrums some people throw.
> The tusks show jagged unhealed edges - which is to
> say
> immediate death. A problem here is that ballistic
> re-entry means condensed spherules will arrive back
> to
> Earth with the same force with which the iron plasma
> left, so an ice impact still can not be ruled out.
> We have the spherule distribution from the Barringer
> Impact to go on for comparison. Can someone here
> provide the information which Nininger gathered?
> That
> distribution could be compared with the peppering
> density preserved in the tusks, which might give
> some
> kind of range.
> If we knew exactly where the tusks and the ox skull
> were found it would help. Alaska and Siberia are big
> places.
> The next C14 spike ca. 13,000 BCE is probably
> related
> to the following one at 10,900 BCE, the cometary
> impact now proved by Kenneth's team's recovery of
> the
> North American impactite layer at that date, some of
> the peoples' memories of which I have repeated here
> from my book.
> good hunting, and Merry Christmas,
> E.P. Grondine
> Man and Impact in the Americas
> Never miss a thing. Make Yahoo your home page.
> http://www.yahoo.com/r/hs
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Received on Wed 26 Dec 2007 10:44:52 AM PST

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