Relaciones 87Sr/86Sr de rocas básicas y granitoides del batolito de la Sierra Norte de Sevilla

  1. J. D. de la Rosa 1
  2. G. Rogers 2
  3. A. Castro 1
  1. 1 Universidad de Sevilla
    info

    Universidad de Sevilla

    Sevilla, España

    ROR https://ror.org/03yxnpp24

  2. 2 Isotope Geology Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow, G75 0QU ESCOCIA
Journal:
Revista de la Sociedad Geológica de España

ISSN: 0214-2708

Year of publication: 1993

Volume: 6

Issue: 1-2

Pages: 141-149

Type: Article

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Abstract

The Seville Ranges batholith constitutes the outermost outcrop of plutonic and subvolcanic rocks of the lberian Massif, intruding into metasedimentary and volcanic rocks of the South Portuguese Zone. New Sr isotopic data from 27 whole rock samples show that the calc-alkaline granitoids with micro granular enclaves were the product of interaction of magmas derived from a mantle source with lithospheric affinities and magmas developed by partial melting of a granulitic crust in an active continental margin. The Sr isotope study of samples from magmatic interaction zones suggests that the isotopic equilibration of Sr between microgranular enclaves and host calc-alkaline granitoid resulted from mechanisms of crystal exchange and tracer diffusion of Sr in liquids

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