Origin of Lead in Andean Calc-Alkaline Lavas, Southern Peru
- 12 December 1980
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 210 (4475) , 1245-1247
- https://doi.org/10.1126/science.210.4475.1245
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
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