RT Journal Article T1 El vulcanismo pérmico de la cuenca del Viar (SO de España): Caracterización de la Secuencia Volcanoclástica Gris T1 Permian volcanism of the Viar Basin (SW Spain): Characterization of Grey Volcaniclastic Sequence A1 Sierra del Pino, Sonia A1 Moreno Garrido, María Carmen A1 González Barrionuevo, Felipe AB 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" PB Sociedad Geológica de España YR 1999 FD 1999 LK http://hdl.handle.net/10272/9944 UL http://hdl.handle.net/10272/9944 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026