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

[Paul]

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.