Author: GiuseppeGiuseppe Date: Apr 23, 2007 01:19
"T. Keating" ktcnslt.com> ha scritto nel messaggio
news:20qm23pi2j89q7gmgi2m4mfl9hnt42he8r@4ax.com...> On Sun, 22 Apr 2007 11:45:16 +0200, "Giuseppe" wrote:
>
>>
>>"Paul F. Dietz" dls.net> ha scritto nel messaggio
>>news:U4qdnXdlCOzGoLfbnZ2dnUVZ_judnZ2d@dls.net...>>> T. Keating wrote:
>>>
>>>>>Actually, the rock of the oceanic crust has a much lower level of
>>uranium than
>>>>>the continental crust. Uranium (and, to some extent, thorium)
>>preferentially
>>>>>go into felsic rocks in preference to mafic rocks. The
concentration
>>>>>of uranium in the continental crust is enriched by orders of
magnitude
>>>>>over the average U content of the Earth because of this.
>>>>
>>>> ...
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