[meteorite-list] Beryllium-10 Study on the Origin of Tektites

From: Paul <bristolia_at_meteoritecentral.com>
Date: Thu, 29 May 2008 09:52:31 -0700 (PDT)
Message-ID: <697952.49261.qm_at_web36207.mail.mud.yahoo.com>

While looking for something else I came across an
interesting tektite study. It is;

Serefiddin, F., G. F. Herzog, and C. Koeberl, 2007,
Beryllium-10 concentrations of tektites from the
Ivory Coast and from Central Europe: Evidence for
near-surface residence of precursor materials.
Geochimica et Cosmochimica Acta. vol. 71, no. 6,
pp. 1574-1582 (March 15, 2007) doi:10.1016/j.gca.2006.12.007

To get the abstract of this article enter the above
doi number in the box at http://dx.doi.org

they concluded:

"Although not definitive, consideration of several possible
cosmic-ray exposure histories suggests that about half the
interior 10Be has a meteoric origin, which if corrected to the
time of formation yields a concentration compatible with
those measured in typical contemporary soils. The observations
are consistent with the formation of three of the four main
tektite groups from surface soils or sediments."

Yours,

Paul H.



      
Received on Thu 29 May 2008 12:52:31 PM PDT