Mecanismos de transporte y emplazamiento de depósitos volcanoclásticos en el litoral NE de Gran Canaria (Islas Canarias)

• Autores: Francisco José Pérez Torrado, J.-L. Schneider, Domingo Gimeno Torrente, P. Wassmer, María del Carmen Cabrera Santana
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 1, 3, 2000 (Ejemplar dedicado a: V Congreso Geológico de España (Alicante, 10-14 julio 2000)), págs. 329-333
• Idioma: español
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• Resumen

  • A volcano-sedimentary sequence of Pliocene age is described in the Cuevas del Cuincho and Trapiche areas (NE shore o f Cran Canaria). Three differents kinds of volcaniclastic deposits are recognized interbedded within littoral and marine sedimentary sequence. The lower one was emplaced as a pyroclastic flow of phonolitic composition and probably belongs to Fataga volcanic group. The middle and upper ones correspond to volcaniclastic breccias of the Roque Nublo volcanic group. Whereas the lower breccia unit was emplaced as a debris flow into a shore face marine environment and derived from subaerial pyroclastic flow or lahar, the upper one corresponds to a debris avalanche deposit emplaced in a littoral environment.

    The presence o f these volcaniclastic deposits attests the existence o f discrete volcanic activity during the volcanic hiatus recognized on Cran Canaria between the end o f the Fataga volcanic group (Miocene) and the beginning o f the Roque Nublo volcanic group (Pliocene).