Articles | Volume 12, issue 4
https://doi.org/10.5194/se-12-835-2021
https://doi.org/10.5194/se-12-835-2021
Research article
 | 
15 Apr 2021
Research article |  | 15 Apr 2021

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

Emilio González Clavijo, Ícaro Dias da Silva, José R. Martínez Catalán, Juan Gómez Barreiro, Gabriel Gutiérrez-Alonso, Alejandro Díez Montes, Mandy Hofmann, Andreas Gärtner, and Ulf Linnemann

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Latest update: 23 Apr 2024
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Short summary
In northwest Iberia, a low-grade unit separates the unrooted accretionary prism from the autochthon. It was divided into Upper (preorogenic) and Lower (synorogenic) parautochthons around the Morais Complex. A review of the sedimentary sequence characteristics, supported by U–Pb ages in 17 new samples of synorogenic sediments and volcanic olistoliths, proposes this model to show the Galicia–Trás-os-Montes Zone forming a tectonic carpet exposed in most of the Parautochthon–Autochthon limit.