Magma compostion. - nuclear core.

[Zack Clayton <zclayton@YAHOO.COM>]

Kim,  You would expect that IF the source of volcanism was the area

anywhere near the earths core.  Most volcanism and extruded magma that

we see today originates as recycled crust from less than 300 miles

depth.  Even the mid ocean ridges and heavy basalt volcanoes like the

Hawaiian Islands come from shallow mantle.  Time of transport from the

core to the surface takes millions of years.  And at that point you are

probably :) going to get something that looks like secular equilibrium.

 Now mix that up with really old stuff from the lower and upper mantle

and continental crust and what do you get?  A big masking effect.



Zack Clayton

Columbus, OH



A day without radiation would be a day without sunshine.





From: 	"Kim D. Merritt" <k.merritt@larc.nasa.gov>

To:	<radsafe@list.vanderbilt.edu>

Date: 	7/19/02 7:41AM

Subject: 	Fwd: RE: Nuclear Planet in DISCOVER





>If the Earth's core was indeed a natural fission reactor wouldn't

there be 

>readily detectable physical evidence of it here at the surface, such

as a 

>natural abundance of plutonium isotopes and fission products that

would 

>well up due to vulcanism?  Wouldn't you also have other naturally

abundant 

>induced radioactivity isotopes?



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