Resumen de Nd isotopic heterogeneity in late-Hercynian granitic plutons from Central Spain
Carlos Villaseca González, Luis C. Barbero González, G. Rogers, Javier Reyes Hernández, José Francisco Santos Zalduegui
Some Hercynian granitic plutons from Central Spain show variation in initial Nd isotopic ratios defining different trends with increasing silica content. There is a decoupling between the Sr and Nd isotopic systems as these plutons present homogeneous initial Sr ratios. Magmatic processes could explain this Nd isotopic disequilibrium; it is suggested that Nd-bearing restitic or early precipitating accesory phases could control the Nd isotopic heterogeneity of the granites
