Depósitos submarinos asociados al deslizamiento gigante del Puerto del Rosario (norte de Fuerteventura, Islas Canarias)

  1. Ramón Casillas Ruiz 1
  2. Juan Ramón Colmenero Navarro 2
  3. Szabolcs Harani 3
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    GRID grid.10041.34

  2. 2 Universidad de Salamanca
    info

    Universidad de Salamanca

    Salamanca, España

    GRID grid.11762.33

  3. 3 Eötvös Loránd University
    info

    Eötvös Loránd University

    Budapest, Hungría

    GRID grid.5591.8

Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2019

Issue: 66

Pages: 103-106

Type: Article

Export: RIS

Abstract

On the western coast of Fuerteventura, north of Puertito de Los Molinos, the basal shear surface of the Puerto del Rosario slide crops out. Over the surface, several levels of breccias, conglomerates and sands occur, interspersed with pillow-lavas and pillow-lavas fragment breccias, which represent a sequence of subaqueous mass flows. Flows that deposited the breccias and sands represent the underwater transformation of debris avalanches related to the main landslide of Puerto del Rosario and with other secondary landslides. Flows represented by conglomerate resulted from the underwater transformation of hyper-concentrated subaerial flows and from the collapse of the pillow-lavas present in coastal lava deltas. The occurrence of these submarine materials above the current sea level seems to be related to a generalized uplift of the western part of Fuerteventura, possibly related to the isostatic readjustment suffered by this part of the island as a result of the enormous mass release caused by the Puerto del Rosario slide.