El vulcanismo Pérmico de la cuenca del Viar (SO de España): Caracterización de la Secuencia Volcanoclástica Gris.

• Autores: Sonia Sierra del Pino, María Carmen Moreno Garrido, Felipe González Barrionuevo
• Localización: Geogaceta, ISSN 0213-683X, Nº. 27, 1999, págs. 159-162
• Idioma: español
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• Resumen

  • A felsic volcanic activity developed during lower-Permian times at the SW Spain is noted for the first time. Petrographic and facies analyses of the "grey beds" of the Permian Viar Basin show a explosive volcanic activity, dacitic and rhyolitic in composition. "Grey beds" are constituted by a sequence of pyroclastic, redeposited volcaniclastic and propery sedimentary rocks which is here renamed "Grey Volcanoclastic Sequence"