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The Geology of Iberia: A Geodynamic Approach pp 251–283Cite as

Rifting of the Southwest and West Iberia Continental Margins

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Abstract

The West and SouthWest Margins of Iberia started their formation as intra-continental rifts during initial break up of Pangea in Triassic times. The tectono-stratigraphic record of the Algarve, Alentejo and Lusitanian basins and their offshore prolongation documents the syn-rift, post-rift and passive margin phases of the rifting process as well as three magmatic cycles of tholeiite to alkaline affinities. Although the Ocean-Continent Transition has been investigated using deep ocean drilling, seismics, gravimetry and magnetics its nature and location are still matters of debate. The tectonic inheritance of the Paleozoic Orogeny had great influence in the geometry of the rift basins and development of the Neo-Tethys and Atlantic Oceans intersection. Salt tectonics strongly controlled both syn-rift and post-rift basin tectonics and led to the formation of an allochthonous salt nappe in the Algarve Basin.

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Authors and Affiliations

  1. Instituto Português do Mar e da Atmosfera (IPMA), Rua C Do Aeroporto, 1749-077, Lisbon, Portugal

    Pedro Terrinha & Marta Neres

  2. Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz (IDL), Ed. C1, Piso 1, 1749-016, Campo Grande, Lisboa, Portugal

    Pedro Terrinha, Marta Neres, João Mata & Luís Matias

  3. Department of Earth Sciences, Uni. NOVA Lisboa, and GeoBioTec, 2829-516, Caparica, Portugal

    José Carlos Kullberg

  4. 3D Seismic Lab, School of Earth & Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK

    Tiago Alves

  5. Departament de Dinàmica de la Terra i de l’Oceà, Facultat de Ciències de la Terra, Institut de Recerca Geomodels, Universitat de Barcelona, Barcelona, Spain

    Adrià Ramos & Josep Anton Muñoz

  6. Terractiva Consulting SL, Carrer de Sardenya 229, 08013, Barcelona, Spain

    Adrià Ramos

  7. Departamento de Geociências, Instituto de Ciências da Terra, Escola de Ciências e Tecnologia, Universidade de Évora, Colégio Luis António Verney, Rua Romão Ramalho, 59, 7000-671, Évora, Portugal

    Carlos Ribeiro

  8. Departamento de Geociências e CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal

    Luís Pinheiro

  9. Instituto Dom Luiz, Universidade de Lisboa, FCUL- Campo Grande Edifício C1, 1749-016, Lisbon, Portugal

    Alexandra Afilhado & Joaquim Luís

  10. Instituto Superior de Engenharia de Lisboa, Lisbon, Portugal

    Alexandra Afilhado

  11. Repsol Exploración, Campus Repsol, c/ Méndez Álvaro 44, 28045, Madrid, Spain

    Óscar Fernández

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    Cecilio Quesada

  2. Laboratório Nacional de Energia e Geologia, Amadora, Portugal

    José Tomás Oliveira

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Terrinha, P. et al. (2019). Rifting of the Southwest and West Iberia Continental Margins. In: Quesada, C., Oliveira, J. (eds) The Geology of Iberia: A Geodynamic Approach. Regional Geology Reviews. Springer, Cham. https://doi.org/10.1007/978-3-030-11295-0_6

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