Re: Our problems are over!..

["Glenn marshall" <gmarshall@duratekinc.com>]

Kai,



How is this determined?  Does the coral grab only the U-238 and not the U-234?  Thorium is chemically very similar (also an actinide); does the coral not also absorb Th-234 and Th-230?  How then is the coral dated?



Glenn



>>> Kai Kaletsch <eic@shaw.ca> 03/08/03 09:42AM >>>

Coral CalciumJerry,



Coral actively grabs the U from seawater and coral is dated by the ingrowth of uranium decay products.





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