New 40Ar-39Ar geochronological data at two areas of interest in the Anaga massif (Tenerife)Punta Poyata and Igueste de San Andrés. Some implications

  1. J.A. Rodríguez-Losada 1
  2. M. Ferrer 2
  3. L. González de Vallejo 3
  4. J. Martínez-Frías 4
  5. L.E. Hernández-Gutiérrez 1
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

  2. 2 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  3. 3 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  4. 4 Instituto deGeociencias, IGEO (CSIC-UCM)
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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: 559-560

Tipo: Artigo

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Outras publicacións en: Geotemas (Madrid)

Resumo

This work provides new Ar40-Ar39 geochronological data in submarine ankaramite rocks located in two distant points of Anaga (NE Tenerife): the submarine hydrothermally altered ankaramites of Punta Poyata area (NNW Anaga) and the ankaramitic pillow lavas at Barranco de Igueste (SE Anaga). The studied samples were collected from outcrops of the lowest stratigraphic levels throughout the volcanics that buildup the Anagamassif. At Punta Poyata, two collected samples yielded an age of 12,2 ± 1,9 Ma and 13,0 ± 1,0 Ma. At Barranco de Igueste, sample results are of 12,7 ± 1,6 Ma and 9,7 ± 1,0 Ma. These data supportthe assumptionthat the Anagamassifbegan its subaerialgrowthearlier than that previously was supposed, most likely in the Mid-Miocene Instead of late Miocene as currently believed.

Fonte de datos: Dialnet