GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2007-05 > 1179760101
From: "Eric Olson" <>
Subject: Re: [DNA] Comet set fire to Northern Hemisphere 13000 years ago?
Date: Mon, 21 May 2007 08:08:21 -0700
I think the Mt. St. Helens event it might be comparable to a modest
meteoroid hit. And the damage was widespread, extending down the river
systems far beyond the actual blast zone. But as you point out, no
megafauna became extinct. (With the possible exception of Big Foot, who
hasn't been sighted since.) :-(
Sadly, floral successions will not be allowed to run their natural course,
except in the set aside, as Weyerhauser has planted most of the blasted old
growth forest with tree farms.
> [Original Message]
> From: Diana Gale Matthiesen <>
> To: <>
> Date: 5/21/2007 5:36:10 AM
> Subject: Re: [DNA] Comet set fire to Northern Hemisphere 13000 years ago?
> The blast from Mt. St. Helen was severe in effect, but limited in extent,
> it's not really a comparable event. While nothing survived in the blast
> few miles away everything survived, so the region was repopulated with
> species that were there before (or will be once succession has run its
> No macrofauna became extinct from the blast of Mt. St. Helen.
> The difficulty for those trying to assert that a wide-spread cataclysm
> have killed off the mammoths and mastodons is explaining how musk oxen,
> carribou, bison, saiga, and others species -- with similar ecological
> requirements -- survived it.
> > -----Original Message-----
> > From: On Behalf Of Eric Olson
> > Sent: Monday, May 21, 2007 3:21 AM
> > To: ;
> > Subject: Re: [DNA] Comet set fire to Northern Hemisphere 13000 years
> > Diana,
> > What you say has much merit.
> > It's amazing how quickly this Mt. St. Helens blast zone out here has
> > recovered, both with plants and animals. The pyroclastic flows were
> > clocked at nearly 300 mph, and about 800 degrees Celsuis.
> > That is bright cherry red heat... It certainly totally sterlized the
> > for miles, but life returned.
> > Eric
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|Re: [DNA] Comet set fire to Northern Hemisphere 13000 years ago? by "Eric Olson" <>|