[meteorite-list] Norway Meteorite Impact Site Believed to be Found

From: MexicoDoug_at_aol.com <MexicoDoug_at_meteoritecentral.com>
Date: Mon Jun 12 20:48:04 2006
Message-ID: <3da.49c6c49.31bf5201_at_aol.com>

Sterling W. wrote:

<<(Truth is, meteoritic iron, tough as it is, is
often quite brittle. Remember, inside it's only
50-100 deg K when it hits, so maybe no big
chunks.) Even if it was "only" a ton or two, it
would be worth looking for, obviously>>
 
Hola Sterling, That temperature quoted probably would have the metal a tad
more brittle. However your temperature expressed in absolute Kelvin degrees
corresponds to about 200 degrees below zero centigrade (and a lot more degrees
below zero Farenheit)
 
I don't mean to rehash this too much, but, no, a large meteoritic iron comes
in at the boiling temperature of water and is actually 273 - over 300
degrees centigrade hotter than you say and certainly not brittle as you indicate.
Earth is not magically a comfortable 25 degrees C either, but that's another
story. Plenty of arguments for what happen in the upper atmosphere regarding
heating and cooling from terrestrial atmospheric sources, but that 50 - 100
K perpetuates misinformation where we have been and done that before, time to
move on Saludos, Doug
 
Received on Mon 12 Jun 2006 07:25:53 PM PDT