Sobre el origen minero de dos pesas de plomo de época romana: aportación del método isotópico

Abstract

Lead isotope analysis has been consolidated as an ideal technique for the study of the relationships between archaeological materials and their mining areas of origin. In the present article, this usefulness is demonstrated through the characterization of the provenance of two Roman lead ponderals of unknown origin, using mass spectrometry (MC-ICP-MS). The isotopic ratios of both pieces have been put in correspondence with those of o res of the Toledo Milonitic Band, Ossa Morena Zone, Central Iberia Zone (Los Pedroches and Linares-La Carolina districts) and South Portuguese Zone or Iberian Pyritic Belt geological regions. Both lead weights seem to correspond to mineralizations in the shear zone of Badajoz-Córdoba (Los Pedroches district, Cuzna and Escoriales mines) or to neighboring Linares district (Palazuelos mine).