Presencia de Pillow-Lavas en las metavolcanitas submarinas de las proximidades de Espasante, Cabo Ortegal, NW de España

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1981 Spain Spanish Publisher:Servicio de Publicaciones de la Universidad Complutense de Madrid

Authors: Arenas Martín, Ricardo; Peinado, Mercedes;

handle: 20.500.14352/65193 , 10261/6003

Presencia de Pillow-Lavas en las metavolcanitas submarinas de las proximidades de Espasante, Cabo Ortegal, NW de España

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Abstract

[ES] Se describe por primera vez en el NW de la Península Ibérica una formación metavolcánica submarina constituida, esencialmente, por brechas de pillows fragmentadas y volcanitas masivas. Dos metamorfismos de bajo grado afectan al conjunto anterior: — El primero (M0) es un evento térmico con las características de un metamorfismo hidrotermal de fondo oceánico. — El segundo (M1) es un metamorfismo dinamotérmico regional similar al que afecta a las series pelítico-samíticas silúricas del flanco W del anticlinal del Barquero.

[EN] A submarine metavolcanic formation is described for the first time in NW Iberian Peninsula. It consists mainly of broken pillow breccías and massive flows. Two low-grade metamorphic events are found in these rocks: — The first one (M0) is a thermal event desplaying features of sea floor hydrothermal metamorphism. — The second one (M1) is a regional dynamo-thermal metamorphism resembling the one undergone by the Silurian

Peer reviewed

Country

Spain

Related Organizations

Complutense University of Madrid
Spain

Keywords

Lavas almohadilladas, Formación metavolcánica, Petrología, 552(234.1), Península Ibérica, Cabo Ortegal, Pillow-Lavas, Metavolcanitas submarinas, Pillow-lavas

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