Articles | Volume 11, issue 6
Research article
30 Nov 2020
Research article |  | 30 Nov 2020

Unraveling the origins and P-T-t evolution of the allochthonous Sobrado unit (Órdenes Complex, NW Spain) using combined U–Pb titanite, monazite and zircon geochronology and rare-earth element (REE) geochemistry

José Manuel Benítez-Pérez, Pedro Castiñeiras, Juan Gómez-Barreiro, José R. Martínez Catalán, Andrew Kylander-Clark, and Robert Holdsworth

Related authors

Resolving uncertainties in the application of zircon Th / U and CL gauges to interpret U-Pb ages: a case study of eclogites in polymetamorphic terranes of NW Iberia
Pedro Castiñeiras, Juan Gómez Barreiro, Francisco J. Fernández, Carmen Aguilar, and José Manuel Benítez Pérez
Solid Earth Discuss.,,, 2020
Revised manuscript not accepted

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Structural geology and tectonics, paleoseismology, rock physics, experimental deformation | Discipline: Structural geology
Natural fracture patterns at Swift Reservoir anticline, NW Montana: the influence of structural position and lithology from multiple observation scales
Adam J. Cawood, Hannah Watkins, Clare E. Bond, Marian J. Warren, and Mark A. Cooper
Solid Earth, 14, 1005–1030,,, 2023
Short summary
Rapid hydration and weakening of anhydrite under stress: implications for natural hydration in the Earth's crust and mantle
Johanna Heeb, David Healy, Nicholas E. Timms, and Enrique Gomez-Rivas
Solid Earth, 14, 985–1003,,, 2023
Short summary
Analogue experiments on releasing and restraining bends and their application to the study of the Barents Shear Margin
Roy Helge Gabrielsen, Panagiotis Athanasios Giannenas, Dimitrios Sokoutis, Ernst Willingshofer, Muhammad Hassaan, and Jan Inge Faleide
Solid Earth, 14, 961–983,,, 2023
Short summary
Structural framework and timing of the Pahtohavare Cu ± Au deposits, Kiruna mining district, Sweden
Leslie Logan, Ervin Veress, Joel B. H. Andersson, Olof Martinsson, and Tobias E. Bauer
Solid Earth, 14, 763–784,,, 2023
Short summary
Does the syn- versus post-rift thickness ratio have an impact on the inversion-related structural style?
Alexandra Tamas, Dan M. Tamas, Gabor Tari, Csaba Krezsek, Alexandru Lapadat, and Zsolt Schleder
Solid Earth, 14, 741–761,,, 2023
Short summary

Cited articles

Abati, J., Dunning, G. R., Arenas, R., Díaz García, F., González Cuadra, P., Martínez Catalán, J. R., and Andonaegui, P.: Early Ordovician orogenic event in Galicia (NW Spain): Evidence from U-Pb ages in the uppermost unit of the Ordenes Complex, Earth Planet. Sc. Lett., 165, 213–228,, 1999. 
Abati, J., Arenas, R., Martinez Catalán, J. R., and Díaz García, F.: Anticlockwise P-T Path of Granulites from the Monte Castelo Gabbro (Ordenes Complex, NW Spain), J. Petrol., 44, 305–327,, 2003. 
Abati, J., Castiñeiras, P., Arenas, R., Fernández-Suárez, J., Barreiro, J. G., and Wooden, J. L.: Using SHRIMP zircon dating to unravel tectonothermal events in arc environments. The early Palaeozoic arc of NW Iberia revisited, Terra Nova, 19, 432–439,, 2007. 
Abati, J., Gerdes, A., Suárez, J. F., Arenas, R., Whitehouse, M. J., and Fernández, R. D.: Magmatism and early-Variscan continental subduction in the northern Gondwana margin recorded in zircons from the basal units of Galicia, NW Spain, Bull. Geol. Soc. Am., 122, 219–235,, 2010. 
Aerden, D. G. A. M.: Correlating deformation in Variscan NW-Iberia using porphyroblasts; implications for the Ibero-Armorican Arc, J. Struct. Geol., 26, 177–196,, 2004. 
Short summary
The Sobrado unit represents an allochthonous tectonic slice of exhumed high-grade metamorphic rocks formed during a complex sequence of orogenic processes in the middle to lower crust. We have combined U–Pb geochronology and REE analyses (LASS-ICP-MS) of accessory minerals in migmatitic paragneiss (monazite, zircon) and mylonitic amphibolites (titanite) to constrain the evolution. A Middle Devonian minimum age for HP metamorphism has been obtained.