Comment on 'The Late Devonian Variscan suture of the Iberian Massif: A correlation of high-pressure belts in NW and SW Iberia. Tectonophysics 654, 96-100' by R. Fernandez and R. Arenas

摘要

Avast Variscan nappe spreading from the Allochthonous Complexes of NW Iberia to the Ossa-Morena Zone in SW Iberia has been proposed by Diez Fernandez and Arenas (2015), based on the correlation of different outcrops of high-pressure and MORB-type rocks. This interpretation conflicts with well-known geological and geophysical data regarding the SW Iberian Variscides, which point to: i) major kinematic and geometric inconsistencies come up when interpreting the Ossa-Morena Zone as an allochthonous unit, ii) the outcrops of high-pressure and MORB-type rocks belong to two different sutures rather than a single one, and iii) SW Iberia is characterized by transpressional deformation related to a very oblique left-lateral continental collision, while NW Iberia features a rather frontal collision. (C) 2015 Elsevier B.V. All rights reserved.