[meteorite-list] CAI and chondrules

[Jeff Grossman]

I didn't say "we don't know cr*p"... I said there 
was not a definitive answer.  We know a lot about 
the timing, materials, and physical conditions 
needed to make chondrules and CAIs, and people 
have used these to make models for their 
formation.  But many of these constraints are 
under scrutiny right now, and some pretty basic 
things are still controversial.  What this means 
is... ok, we don't know cr*p.  But progress is being made.

Jeff


At 02:39 PM 10/1/2009, Sterling K. Webb wrote:
>Hi, Carl, Francesco, Jeff, List,
>
>Wrong, Carl. A good solid "We don't know
>crap about this yet; it's all up in the air"
>is the best kind of definitive answer.
>
>There are probably a half-dozen scenarios
>for how this data came about and there's few
>reasons to choose any one over the others.
>
>I was glad to hear Jeff confirm it.
>
>
>Sterling K. Webb
>-----------------------------------------------------------
>----- Original Message ----- From: "Carl 's" <carloselguapo1 at hotmail.com>
>To: <meteorite-list at meteoritecentral.com>
>Sent: Wednesday, September 30, 2009 5:49 PM
>Subject: Re: [meteorite-list] CAI and chondrules
>
>
>
>Ahhh! Good questions, Francesco. I had been 
>wondering about CAIs and chondrules myself. None 
>of the books I've read explains,how?
>
>Thanks also for your answer, Jeff. While not 
>definitive, it seems to be the only answer at this time. Thank you.
>
>Carl
>
>
>Jeff Grossman wrote:
>>...
>
>Definitive answers to what caused the formation of CAIs and chondrules
>are not known.
>
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Dr. Jeffrey N. Grossman       phone: (703) 648-6184
US Geological Survey          fax:   (703) 648-6383
954 National Center
Reston, VA 20192, USA