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The volcanic clasts from the basal conglomerate of Herrería Fm: Evidences of a Neoproterozoic volcanism in the lower Cambrian

dc.contributor.authorRubio Ordóñez, Álvaro
dc.contributor.authorBarba, Pedro
dc.contributor.authorCuesta, Andrés
dc.contributor.authorGallastegui, G.
dc.contributor.authorSuárez Hernando, Oier
dc.contributor.authorUgidos, José María
dc.contributor.authorValladares, María Isabel
dc.description.abstractIn the East limb of the Narcea Antiform (Iberian massif) outcrops siliciclastic Cambrian materials with uncomformity disposition over the Neoproterozoic Narcea Slates. The lower Cambrian Herrería Fm. in the Cantabrian Zone includes a conglomeratic unit that it's interpreted like a cohesive debris flow and braided chanels. Most clasts in the considered sections are tuffaceous and ignimbritic volcanic rocks. This papper introduced a new set of data that confirms an acidic composition: mainly rhyolites and minor amounts of trachytes and andesites. Authors interpreted that this volcanic clasts are Neoproterozic in age and with similar characteristics to the acidic volcanic rocks in the ZAOL from the Narcea Antiform. Probably it represents the last volcanic episode of the Cadomian cycle and its different from the Cambro-ordovician alkaline-type volcanismen_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherNeoproterozoic and lower Cambrianen_US
dc.subject.otherNarcea Antiformen_US
dc.subject.otherTuffaceous and ignimbritic rocksen_US
dc.subject.otherIberian massifen_US
dc.titleLos cantos volcánicos del conglomerado basal de la Fm. Herrería: Evidencias de un Volcanismo Neoproterozoico en la base del Cámbricoen_US
dc.titleThe volcanic clasts from the basal conglomerate of Herrería Fm: Evidences of a Neoproterozoic volcanism in the lower Cambrianeng

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