%0 Journal Article
%A Villaseca González, Carlos
%A López García, José Ángel
%A Barbero González, Luis C.
%T Estudio de la composición isotópica (Pb-S-O) de lasmineralizaciones Pb-Zn de Mazarambroz (Banda Milonítica deToledo)
%D 2005
%@ 0213-683X
%U https://hdl.handle.net/20.500.14352/49613
%X Combined lead, sulphur and oxygen isotopes have been analysed in ore (galena and sphalerite) andassociated (quartz, barite) minerals from the Mazarambroz Pb-Zn mineralization. Lead isotopic model agesin galenas cluster around 121 ± 8 Ma in good agreement with previously suggested mesozoic age of thisPb-Zn mineralization estimated by apatite fission tracks in mylonitic wall-rocks. Isotopic composition ofMazarambroz mineralization suggests a high rock (metamorphic/granitic)/fluid interaction with minorparticipation of meteoric waters. These fluids circulated deeply along fragile cracks of the major shear zoneof Toledo.
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