Re: shelldates (was Early diets)
Jason F. McBrayer (Jason.Mcbrayer@launchpad.unc.edu)
15 May 1994 05:31:28 GMT
In article <rjy.13.2DCFE808@uct.ac.za>, <rjy@uct.ac.za> wrote:
>In article <2qgjn6$qge@samba.oit.unc.edu> David.Bibb@launchpad.unc.edu
>(David Darryl Bibb) writes:
>
>
>>Many thanks for the information. I rather thought there would have to be
>>some problems involved with such dating. I assume fresh water shellfood
>>would not suffer from the same problem?
>
>I don't know for sure but I suspect that there might be some sort of effect
>perhaps not as great as for sea water. The source of the water would have
>some role - if the lake, river etc was fed by an ancient aquifer then
>probably there would be some problem....Discrepancies in dates on carbonates
>in general are a phenomenon - ostrich eggshell for instance seems to produce
>dates which differ from allied charcoal ones by regrettably varied amounts.
>
There are in fact problems in dating fresh water shellfish. These
problems arise largely from the use of carbon from limestone
deposits and older shells. I don't know how great the effect is,
either, but I'd be grateful if someone who knows would post.
Jason F. McBrayer
--
------------------------------------------------------------------------------
\ The above does not represent OIT, UNC-CH, laUNChpad, or its other users. /
------------------------------------------------------------------------
|