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The Geology of Iberia: A Geodynamic Approach pp 131–171Cite as

SW Iberia Variscan Suture Zone: Oceanic Affinity Units

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Part of the book series: Regional Geology Reviews ((RGR))

Abstract

The geology of SW Iberia records a sequence of geologic events from the Cambrian-Early Ordovician rifting and subsequent passive margin development along the southern flank of the Rheic Ocean, to onset of oblique (sinistral) subduction in the Devonian, followed by oblique terrane accretion, ocean closure/continental collision and orogenic collapse. As a result, SW Iberia contains the southernmost exposure of the Pangean suture in the European Variscides. This suture zone is characterized by a belt of dismembered oceanic-related rocks and HP metamorphic complexes which are tectonically juxtaposed with the Gondwanan passive margin to the north (OMZ) and with the exotic South Portuguese Terrane to the south, which is thought to be either a remnant of Avalonia or Meguma.

Coordinator: C. Quesada.

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Authors and Affiliations

  1. Instituto Geológico y Minero de España, Ríos Rosas 23, 28003, Madrid, Spain

    C. Quesada

  2. Facultad de Ciencias Geológicas, Universidad Complutense, Madrid, Spain

    C. Quesada

  3. Department of Earth Sciences, Saint Francis Xavier University, Antigonish, NS, B2G 2W5, Canada

    J. A. Braid & J. B. Murphy

  4. CIMA - Centro de Investigação Marinha e Ambiental, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal

    P. Fernandes

  5. Laboratorio Nacional de Energia e Geologia (LNEG), Ap. 7586-Alfragide, 2611-901, Amadora, Portugal

    P. Ferreira & J. T. Oliveira

  6. Faculdade de Ciências, IDL - Instituto Dom Luiz, Universidade de Lisboa, Campo Grande, Edifício C6, Piso 4, 1749-016, Lisbon, Portugal

    R. S. Jorge

  7. Laboratório Nacional de Energia e Geologia (LNEG), Centro de Estudos Geológicos e Mineiros do Alentejo, Bairro da Vale d′Oca, Ap. 14, 7600-020, Aljustrel, Portugal

    J. X. Matos

  8. Instituto de Ciências da Terra, Departamento de Geociências da Universidade de Évora, 7000-671, Évora, Portugal

    J. Pedro

  9. Laboratório Nacional de Energia e Geologia (LNEG), Rua da Amieira, Ap. 1089, 4466-901, São Mamede de Infesta, Portugal

    Z. Pereira

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    Cecilio Quesada

  2. LNEG, Amadora, Portugal

    José Tomás Oliveira

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Quesada, C. et al. (2019). SW Iberia Variscan Suture Zone: Oceanic Affinity Units. In: Quesada, C., Oliveira, J. (eds) The Geology of Iberia: A Geodynamic Approach. Regional Geology Reviews. Springer, Cham. https://doi.org/10.1007/978-3-030-10519-8_5

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