Origin of lead in andean calc-alkaline lavas, southern peru |
| |
Authors: | Tilton G R Barreiro B A |
| |
Abstract: | Lead isotope data from Quaternary andesitic lavas of the Arequipa and Barroso groups of southern Peru and from regional Precambrian granulitic gneisses reveal a lead component in the lavas from the gneisses. The lava leads can be accounted for by two-component mixtures of lead from mantle and lower crustal sources, although the mixing process need not have occurred in the lower crust. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|