Nd isotopic heterogeneity in late-Hercynian granitic plutons from Central Spain

  1. Villaseca González, Carlos
  2. Barbero González, Luis C.
  3. Rogers, G.
  4. Reyes Hernández, Javier
  5. Santos Zalduegui, José Francisco

ISSN: 0213-683X

Year of publication: 1997

Issue: 23

Pages: 165-168

Type: Article

More publications in: Geogaceta


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