Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method

Le résumé fourni par la source

Measurement has been made of Ir content in samples collected from P/T boundary layers inGifu, Japan. The samples were collected from the site where fullerenes have been found. Thesamples were first crashed into powders and then activated in a nuclear reactor. The gammaray measurement of the samples was made after cooling for two months. None of the samplesanalyzed yielded Ir content comparable with the well-known K/T boundary layer at severalppb's. In view of other experiments which yielded negative results, it is tentatively concludedthat the P/T boundary does not provided a geological evidence of extra-terrestrial cause in theform of Iridium.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.