Evolución tectono-metamórfica de la unidad extensional de Adra (Complejo Alpujárride, Béticas centrales)Resultados preliminares.

  1. Azañón, J.M. 1
  2. Crespo-Blanc, A. 1
  3. García-Dueñas, V. 1
  4. Sánchez-Gómez, M. 1
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 1996

Issue Title: Comunicaciones presentadas en el IV Congreso Nacional de Geología, Alcalá de Henares, 1996

Issue: 20

Pages: 813-816

Type: Article

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Abstract

In the central Betics, the Adra unit represents the higher unit of the Alpujarride complex. This unit is bounded by Miocene low-angle normal faults. The lithostratigraphic sequence of Adra unit includes, from bottom to top: darkschists with garnet, light coloured schists (Palaeozoic), phyllites (Permo-Triassic) and carbonated rocks (upper Triassic). North-vergent recumbent folds have been recognized within the unit. They affect the lithological boundaries, the metamorphic isogrades and the main foliation, this latter formed during a decompression, that is with an extensional character. These data suggest the alternance of contractional and extensional events during the tectonic evolution of the Alpujarride Complex.

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