En el presente trabajo se analiza el contenido de las distintas tipologías de cuarzo, definidas por Basu et al. (1975) para análisis de procedencia, en depósitos arenosos actuales, generados a partir de macizos del Sistema Central con distintas litologías (granitos, gneises, pizarras-esquistos).Aplicando la metodología de dichos autores se observa que, para los depósitos estudiados, pierde validez para discriminar áreas de procedencia plutónica y metamórfica de alto grado en función del contenido en las tipologías monocristalinas. No obstante, se corrobora la utilidad del contenido en las tipologías policristalinas para diferenciar áreas metamórficas de bajo grado.Palabras clave: Arenas, depósitos actuales, petrología, procedencia, tipologías de granos de cuarzo. ABSTRACfIn this study we have analized the content of the different detrital quartz types (Basu et aJ., 1975) in recent sands derived from single source areas (granitic, gneissic and slate-schists lithologies) in the Sistema Central. Following the methodology of Basu et aJo (1975), for sand provenance interpretation, we have observed Ibat, in these deposits, the content of monocrystaline quartz types is not useful to discriminate plutonic and high rank metamorphic sources. However, we can confirm the validity of the policrystaline types content to distinguish sands of low rank metamorphic parentage.
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