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[EarthNSky <erthnsky AT bellsouth.net>]

Speaking of impact events and craters...you guys know what the largest 
known crater in the US is??

35 million years ago, a 1-2 mile wide asteroid strikes the East Coast of 
the US and creates the beginning of what we know today as Chesapeake 
Bay.  It created a mega-tsunami over 2000 ft tall.  Of course the 
advance and retreat of glaciers during multiple ice ages helped, too, 
but when you are talking about what the earth is like underground, the 
fracturing from that impact still can be seen.
If you live near there in VA, you may have heard that there are pockets 
of salty water in the groundwater.  That was formed during the impact.
The movie "Deep Impact" kind of modeled it's mega-tsunami on what it 
might have been like, so if you have trouble imagining, you can watch 
that movie.  Of course, the movie had the impact off shore, whereas the 
bay meteorite would have vaporized everything for hundreds of miles 
before the tsunami washed everything away.
That article I sent talking about oil in those impact fracture zones 
makes a lot of sense.

Bev

--
BevanRon of EarthNSky Farm   NW Georgia USDA Zone 7
34.498N 85.076W    Bev is Earth, Ron is Sky