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The Finisterra-Léon-Mid German Cristalline Rise Domain; Proposal of a New Terrane in the Variscan Chain

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The Geology of Iberia: A Geodynamic Approach

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

Abstract

This chapter characterizes the Finisterra Terrane, enhancing its differences from the neighbouring Iberian Terrane. The contact between these terranes is the Porto-Tomar-Ferreira do Alentejo Shear Zone, a major lithospheric structure whose complex Variscan evolution remains debatable. The lithostratigraphic, tectono-metamorphic and magmatic features observed in the Finisterra Terrane show that it was an independent terrane during the Devonian. This situation changed during the Mississippian, when the main features of the Finisterra and the Iberian Terranes became similar, which indicates that both terranes evolved together since the Carboniferous times. The similarities of the Finisterra Terrane with the Central European Variscan domains, namely the Léon Block and the Mid-German Crystalline Rise, enable us to propose a new tectono-stratigraphic terrane (Finisterra-León-MGCR Terrane), which defines an arcuate pattern compatible with the Ibero-Armorican Arc.

Coordinator: N. Moreira.

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Acknowledgements

The authors recognize the excellent work of Tomás Oliveira as editor, which greatly help to improve this paper. They also acknowledge the funding provided to the ICT and to IDL, under contract with FCT (the Portuguese Science and Technology Foundation; respectively UID/GEO/04683/2013 and UID/GEO/50019/2013). Noel Moreira acknowledges Fundação Gulbenkian for the financial support through the “Programa de Estímulo à Investigação 2011” and Fundação para a Ciência e a Tecnologia, through the PhD grant (SFRH/BD/80580/2011).

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  1. Earth Sciences Institute (ICT), Pole of the Évora University and Departamento de Geociências ECTUE, Rua Romão Ramalho, nº 59, 7000-671, Évora, Portugal

    N. Moreira, R. Dias & J. Pedro

  2. Laboratório de Investigação de Rochas Industriais e Ornamentais da Escola de Ciências e Tecnologia, Universidade de Évora (LIRIO-ECTUE), Convento das Maltezas, 7100-513, Estremoz, Portugal

    N. Moreira & R. Dias

  3. Laboratório Nacional de Energia e Geologia, UGCG, Estrada da Portela, Apartado 7586—Zambujal, 2720, Alfragide, Portugal

    J. Romão

  4. Museu Nacional de História Natural e da Ciência, Departamento de Geologia, Faculdade de Ciências, Instituto Dom Luiz (IDL), Edifício C6, Piso 4, Campo Grande, 1749-016, Lisbon, Portugal

    A. Ribeiro

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  1. N. Moreira
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    Cecilio Quesada

  2. LNEG, Amadora, Portugal

    José Tomás Oliveira

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Moreira, N., Romão, J., Dias, R., Ribeiro, A., Pedro, J. (2019). The Finisterra-Léon-Mid German Cristalline Rise Domain; Proposal of a New Terrane in the Variscan Chain. 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_7

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