RT Journal Article
T1 Tectonometamorphic evolution of the Aracena metamorphic belt (SW Spain) resulting from ridge-trench interaction during Variscan plate convergence
A1 Díaz Azpiroz, Manuel
A1 Fernández Rodríguez, Carlos
A1 Castro, A.
A1 El-Biad, M.
AB [1] The Aracena metamorphic belt is a high-temperature/low-pressure (HT/LP) band located at the southern end of the European Variscan chain. It marks a suture between Armorica and Avalonia. This belt is characterized by (1) the presence of mid-ocean ridge basalt-derived metabasites that were affected by an inverted HT/LP metamorphism related to SW verging thrusting, whose thermal peak diachronously migrated eastward; (2) the occurrence of a HT/LP metamorphism, related to an extensional event, affecting continental rocks belonging to the Ossa Morena zone with peak temperatures that are ∼150°C higher than that recorded in the oceanic metabasites; and (3) the presence of near-trench magmatism with high-Mg andesite composition. These and other characteristics can be interpreted in terms of a ridge-trench-trench triple junction that migrated along the Armorican margin during Variscan oblique convergence.
PB John Wiley & Sons Ltd.
SN 0278-7407
YR 2006
FD 2006
LK https://hdl.handle.net/20.500.14352/118867
UL https://hdl.handle.net/20.500.14352/118867
LA eng
NO Díaz Azpiroz, M., et al. «Tectonometamorphic Evolution of the Aracena Metamorphic Belt (SW Spain) Resulting from Ridge‐trench Interaction during Variscan Plate Convergence». Tectonics, vol. 25, n.º 1, febrero de 2006, p. 2004TC001742. DOI.org (Crossref), https://doi.org/10.1029/2004TC001742.
NO Ministerio de Ciencia y Tecnologia (España)
NO Junta de Andalucía
NO University of Huelva
DS Docta Complutense
RD 8 abr 2025