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Noble Metals in Cretaceous/Tertiary Sediments from El Kef

1983; R. Oldenbourg Verlag; Volume: 34; Issue: 3 Linguagem: Inglês

10.1524/ract.1983.34.3.139

2193-3405

M. Kuslys, U. Krähenbühl,

Heavy metals in environment

Sediments from El Kef, Tunisia, were analysed by RNAA for Au, Ir and Os.All three elements show a 10-20 fold enrichment at the Cretaceous/Tertiary boundary.This enrichment must be the result of the addition of material with a high concentration of noble metals.It is plausible that this exotic material has an extraterrestrial origin.