Caracterización geoquímica del complejo lóbulo-hialoclastítico submarino de la Caldera de Taburiente (La Palma, Islas Canarias)

  1. J. De la Nuez 1
  2. R. Casillas 1
  3. M.L. Quesada 1
  4. C. Fernández 2
  5. J.R. Colmenero 3
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

  2. 2 Universidad de Huelva
    info

    Universidad de Huelva

    Huelva, España

    ROR https://ror.org/03a1kt624

  3. 3 Universidad de Salamanca
    info

    Universidad de Salamanca

    Salamanca, España

    ROR https://ror.org/02f40zc51

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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Ano de publicación: 2016

Título do exemplar: IX CONGRESO GEOLÓGICO DE ESPAÑA

Número: 16

Páxinas: 407-410

Tipo: Artigo

DIALNET GOOGLE SCHOLAR lock_openAcceso aberto editor

Outras publicacións en: Geotemas (Madrid)

Resumo

A geochemical characterization of felsic submarine rocks of the La Palma island has been carried out. These felsic rocks are forming a lobe-hyaloclastite complex in the Caldera de Taburiente and they are classified as trachytes, although due to their hydrothermal alteration they should be considered as metatrachytes. By the incompatible trace element behaviour the variety of these trachytic rocks (porphyritic or aphanitic terms) could be explained as a crystal fractionation process. On the other hand, the incompatible trace element and rare earth features indicate that these trachytes are not cogenetic with the submarine basaltic and trachybasaltic rocks of the Basal Complex of La Palma, but the trachytic magma responsible of the lobe-hyaloclastite complex formation would have been resulted in the late evolution of a basaltic magma whose edifice does not currently crop out.

Fonte de datos: Dialnet