Relationship between sandstone composition and provenance. Examples from Palaeozoic sandstones of theSouthportuguese Zone

摘要

Two different types of Upper Paleozoic sandstones from Southportuguese Zone are studied. Data comingfrom petrographic, sedimentological and regional analyses of the sandstones point to two different anomaliesin relation with Dickinson and et al.’s provenance model. Discrimination between modal analysis andpetrographic study of arenites is noted, as well as discrimination between source and tectonic setting ofthe provenance area