Articles | Volume 11, issue 4
Solid Earth, 11, 1291–1312, 2020
https://doi.org/10.5194/se-11-1291-2020

Special issue: The Iberian Massif in the frame of the European Variscan...

Solid Earth, 11, 1291–1312, 2020
https://doi.org/10.5194/se-11-1291-2020

Research article 09 Jul 2020

Research article | 09 Jul 2020

Chronostratigraphic framework and provenance of the Ossa-Morena Zone Carboniferous basins (southwest Iberia)

Manuel Francisco Pereira et al.

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Subject area: The evolving Earth surface | Editorial team: Stratigraphy, sedimentology, geomorphology, and palaeontology | Discipline: Stratigraphy
A tectonic carpet of Variscan flysch at the base of a rootless accretionary prism in northwestern Iberia: U–Pb zircon age constrains from sediments and volcanic olistoliths
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Cited articles

Andrade, A. S.: Contribuition à l'Analyse de la Suture Hercynienne de Beja (Portugal), Perspectives Métallogéniques, unpublished PhD thesis, INPL, 137 pp., 1983. 
Andrade, C. F.: Alguns elementos para o estudo dos depósitos de carvão do Moinho da Ordem, Comunicações dos Serviços Geológicos de Portugal, XVI, 3–28, 1927. 
Arenas, R., Díez Fernández, R., Sánchez Martínez, S., Gerdes, A., Fernández-Suárez, J., and Albert, R.: Two-stage collision: exploring the birth of Pangea in the Variscan terranes, Gondwana Res., 25, 756–763, 2014. 
Armendáriz, M., López-Guijarro, R., Quesada, C., Pin, C., and Bellido, F.: Genesis and evolution of a syn-orogenic basin in transpression: Insights from petrography, geochemistry and Sm-Nd systematics in the Variscan Pedroches basin (Mississippian, SW Iberia), Tectonophysics, 461, 395–413, 2008. 
Azor, A., Rubatto, D., Simancas, J. F., González Lodeiro, F., Martínez Poyatos, D., Martín Parra, L. M., and Matas, J.: Rheic Ocean ophiolitic remnants in southern Iberia questioned by SHRIMP U-Pb zircon ages on the Beja-Acebuches amphibolites, Tectonics, 27, TC5006, https://doi.org/10.1029/2008TC002306, 2008. 
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Short summary
A chronostratigraphic study was conducted on Carboniferous rocks of SW Iberia. Terrigenous strata with a maximum depositional age of ca. 303 Ma unconformably overlie marine deposits and volcanic rocks dated at ca. 335–331 Ma. Lying below this unconformity, the marine deposits are intruded and overlain by a ca. 317 Ma porphyry. Detrital zircon populations from marine deposits indicate derivation from Laurussian terranes, while the terrestrial rocks are related to Laurussia and Gondwana sources.