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

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

doi:https://doi.org/10.5194/se-12-835-2021

Articles | Volume 12, issue 4

https://doi.org/10.5194/se-12-835-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Iberian Massif in the frame of the European Variscan...

https://doi.org/10.5194/se-12-835-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 4

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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Final revised paper (published on 15 Apr 2021)
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Preprint (discussion started on 15 Oct 2020)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'The provenance of Silurian-Mid-Ordovician zircon grains found in the GTMZ LPa units', Manuel Francisco Pereira, 20 Oct 2020
- AC1: 'Reply on RC1', Ícaro Dias da Silva, 24 Dec 2020
RC2: 'Review of se-2020-173', John Wakabayashi, 16 Nov 2020
- AC2: 'Reply on RC2', Ícaro Dias da Silva, 24 Dec 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Ícaro Dias da Silva on behalf of the Authors (19 Jan 2021) Author's response Manuscript

ED: Referee Nomination & Report Request started (23 Jan 2021) by Kei Ogata

RR by Manuel Francisco Pereira (27 Jan 2021)

ED: Publish as is (23 Feb 2021) by Kei Ogata

ED: Publish as is (23 Feb 2021) by Federico Rossetti (Executive editor)

AR by Ícaro Dias da Silva on behalf of the Authors (03 Mar 2021)

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.