Articles | Volume 7, issue 2
https://doi.org/10.5194/se-7-579-2016
https://doi.org/10.5194/se-7-579-2016
Research article
 | 
13 Apr 2016
Research article |  | 13 Apr 2016

Insights on high-grade deformation in quartzo-feldspathic gneisses during the early Variscan exhumation of the Cabo Ortegal nappe, NW Iberia

Francisco José Fernández, Sergio Llana-Fúnez, Pablo Valverde-Vaquero, Alberto Marcos, and Pedro Castiñeiras

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Short summary
High-grade gneisses record two partial melting events: early Ordovician and early Variscan. Primary sedimentary layering is well preserved locally at the top of the sequence. First stage of the exhumation process occurred in ∼ 10 Ma. Strain was progressively localized along the boundaries of the migmatitic qz-fsp gneisses. Deformation reduced substantially the thickness of the gneissic rock sequence. "Internal" extrusion of the migmatites is documented.