d34S de los sulfuros silúricos tipo "sedex" de Latedo-Sejas de Aliste (Zamora, España).
- S. M. Timón Sánchez 1
- M. C. Moro Benito 1
- A. Fernández Fernández 1
- 1 Dpto. de Geología. Facultad de Ciencias. Univ. Salamanca. 37008 Salamanca.
ISSN: 0213-683X
Año de publicación: 1996
Número: 20
Páginas: 1535-1538
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
The sulphides of Latedo-Sejas are mainly constituted of pyrite-pyrrhotite and, on the basis of their textural and structural characteristics, two mineralogical stages have been differentiated: syn-diagenetic and/or metamorphic (befare or syn-phase 1) and syn-phase 3. The mineralization is associated to two processes of alteration: carbonatization and chloritization. Owe to d34S values, a biogenic origin can be attributed to these sulphides with greater hydrothermal contamination in Latedo. The changes in d34S values are due to the transit from a deep anoxic to another shallow and coastal environment in the sedimentary basin.