Re: Our problems are over!..

[Kai Kaletsch <eic@shaw.ca>]

Glenn,



I was looking at

http://horizon.ucsd.edu/palmyra/cobb2002.pdf

They say that the difference in solubility is 5 orders of magnitude. So U is

not in equilibrium with it progeny when it is dissolved in the ocean. (U234

would also be missing, because the parent is missing.) See page 58.



Anybody have data on U234/U238 in seawater?



Kai



----- Original Message -----

From: "Glenn marshall" <gmarshall@duratekinc.com>

To: <#060#radsafe@list.vanderbilt.edu#062#>;

<jerry#032#cohen#032##060#jjcohen@prodigy.net#062#>; <eic@shaw.ca>

Sent: Saturday, March 08, 2003 11:28 AM

Subject: Re: Our problems are over!..





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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