The late variscan HT/LP metamorphic event in NW and Central Iberia: Relationships to crustal thickening, extension, orocline development and crustal evolution

Geological Society Special Publication

Volumn 405, Issue 1, 2014, Pages 225-247

  Catalán, José R Martínez ^a   Pascual, Francisco J Rubio ^b   Montes, Alejandro Díez ^b   Fernández, Rubéndíez ^a   Barreiro, Juan Gómez ^a   Da Silva, Ícaro Dias ^b   Clavijo, Emilio González ^b   Ayarza, Puy ^a   Alcock, James E ^c  

^a UNIVERSITY OF SALAMANCA   (Spain)

^b INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA   (Spain)

^c PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85045659593     PISSN: 03058719     EISSN: None     Source Type: Book Series    
DOI: 10.1144/SP405.1     Document Type: Article

References (125)

1. Abati, J. & Dunning, G. R. 2002. Edad U-Pb en monacitas y rutilos de los paragneises de la Unidad de Agualada (Complejo de Órdenes, NW del Macizo Ibérico). Geogaceta, 32, 95-98
2. Abati, J., Gerdes, A., Fernández-Suárez, J., Arenas, R., Whitehouse, M. J. & Díez Fernández, R. 2010. Magmatism and early-Variscan continental subduction in the northern Gondwana margin recorded in zircons from the basal units of Galicia, NW Spain. Geological Society of America Bulletin, 122, 219-235, http://dx. doi. org/10. 1130/B26572. 1
3. Aerden, D. G. A. M. 2004. Correlating deformation in Variscan NW-Iberia using porphyroblasts; implications for the Ibero-Armorican Arc. Journal of Structural Geology, 26, 177-196
4. Alcock, J. E., Martínez Catalán, J. R., Arenas, R. & Díez Montes, A. 2009. Use of thermal modeling to assess the tectono-metamorphic history of the Lugo and Sanabria gneiss domes, Northwest Iberia. Bulletin de la Societé Géologique de France, 180, 179-197
5. Alcock, J. E., Martínez Catalán, J. R. & Arenas, R. 2011. One and two-dimensional models are equally effective in monitoring the crust's thermal response to advection by large-scale thrusting during orogenesis. Computer & Geosciences, 37, 1205-1207, http://dx. doi. org/10. 1016/j. cageo. 2011. 02. 012
6. Alonso, J. L., Marcos, A. & Suárez, A. 2009. Paleogeographic inversion resulting from large out of sequence breaching thrusts: the León Fault (Cantabrian Zone, NW Iberia). A new picture of the external Variscan Thrust Belt in the Ibero-Armorican Arc. Geologica Acta, 7, 451-473, http://dx. doi. org/10. 1344/105. 000001449
7. Alvarez-Marrón, J., Pérez-Estaún, A. et al. 1996. Seismic structure of the northern continental margin of Spain from ESCIN deep seismics profiles. Tectonophysics, 264, 153-174
8. Antunes, I. M. H. R., Neiva, A. M. R. & Silva, M. M. V. G. 2010. Isotopic geochronology of granitic rocks from the Central Iberian Zone: comparison of methodologies. Estudios Geológicos, 66, 45-50, http://dx. doi. org/10. 3989/egeol. 40143. 097
9. Ardizone, J., Mezcua, J. & Socías, I. 1989. Mapa aeromagne tico de España Peninsular. Escala 1:1. 000. 000. Instituto Geográfico Nacional, Madrid
10. Arenas, R. & Martínez Catalán, J. R. 2003. Low-P metamorphism following a Barrovian-type evolution. Complex tectonic controls for a common transition, as deduced in the Mondoñedo thrust sheet (NW Iberian Massif). Tectonophysics, 365, 143-164
11. Arenas, R., Martínez Catalán, J. R. et al. 2007. Paleozoic ophiolites in the Variscan suture of Galicia (northwest Spain): distribution, characteristics and meaning. In: Hatcher, R. D., Jr., Carlson, M. P., McBride, J. H. & Martínez Catalán, J. R. (eds) 4-D Framework of Continental Crust. Geological Society of America, Boulder, Memoirs, 200, 425-444, http://dx. doi. org/10. 1130/2007. 1200(22)
12. Ayarza, P., Martínez Catalán, J. R., Gallart, J., Dañobeitia, J. J. & Pulgar, J. A. 1998. Estudio Sísmico de la Corteza Ibérica Norte 3. 3: a seismic image of the Variscan crust in the hinterland of the NW Iberian Massif. Tectonics, 17, 171-186
13. Ayarza, P., Martínez Catalán, J. R., Alvarez-Marrón, J., Zeyen, H. &Juhlin, C. 2004. Geophysical constraints on the deep structure of a limited oceancontinent subduction zone at the north Iberian margin. Tectonics, 23, 1-21, TC1010, http://dx. doi. org/10. 1029/2002TC001487
14. Barbero, L. 1995. Granulite-facies metamorphism in the Anatectic Complex of Toledo, Spain: late Hercynian evolution by crustal extension. Journal of the Geological Society, London, 152, 365-383
15. Barbero, L. & Villaseca, C. 2000. Eclogite facies relics in metabasites from the Sierra de Guadarrama (Spanish Central System): P-T estimations and implications for the hercynian evolution. Mineralogical Magazine, 64, 815-836
16. Bard, J. P., Capdevila, R. & Matte, Ph. 1971. Structure de la chaîne hercynienne de la Meseta Ibérique: comparaison avec les segments voisins. In: Histoire Structurale du Golfe de Gascogne. Publications de l'Institut Français du Pétrole, Technip, Paris, Symposium CNEXO I, 4, 1-68
17. Bastida, F., Martínez Catalán, J. R. & Pulgar, J. A. 1986. Structural, metamorphic and magmatic history of the Mondoñedo nappe (Hercynian belt, NW Spain). Journal of Structural Geology, 8, 415-430
18. Bea, F., Montero, P. et al. 2006. Zircon thermometry and U-Pb ion-microprobe dating of the gabbros and associated migmatites of the Variscan Toledo anatectic complex, Central Iberia. Journal of the Geological Society, London, 163, 847-855
19. Bea, F., Montero, P., Talavera, C., Abu Anbar, M., Scarrow, J. H., Molina, J. F. & Moreno, J. A. 2010. The palaeogeographic position of Central Iberia in Gondwana during the Ordovician: evidence from zircon chronology and Nd isotopes. Terra Nova, 22, 341-346, http://dx. doi. org/10. 1111/j. 1365-3121. 2010. 00957. x
20. Beaumont, C., Jamieson, R. & Nguyen, M. 2010. Models of large, hot orogens containing a collage of reworked and accreted terranes. Canadian Journal of Earth Sciences, 47, 485-515, http://dx. doi. org/10. 1139/E10-002
21. Bellido, F., Brandle, J. L., Lasala, M. & Reyes, J. 1992. Consideraciones petrológicas y cronológicas sobre las rocas graníticas hercínicas de Galicia. Cuadernos do Laboratorio Xeolóxico de Laxe, 17, 241-261
22. Bellido Mulas, F., Brandle Matezanz, J. L., García Garzón, J., Lasala Gausa, M. J. & Reyes Andrés, J. 1990. Estudio geológico y geocronológico del plutón granítico post-cinemático de Neira (Lugo, Spain). Cuadernos del Laboratorio Xeolóxico de Laxe, 15, 25-40
23. Block, L. & Royden, L. H. 1990. Core complex geometries and regional scale flow in the lower crust. Tectonics, 9, 557-567
24. Capdevila, R. 1969. Le métamorphisme régional progressif et les granites dans le segment hercynien de Galice nord oriental (NW de l'Espagne). PhD thesis, Universite de Montpellier
25. Capdevila, R. & Floor, P. 1970. Les differents types de granites hercyniens et leur distribution dans le Nord-Ouest de l'Espagne. Boletín Geológico y Minero, Instituto Geológico y Minero de España, 81, 215-225
26. Capdevila, R. &Vialette, Y. 1970. Estimation radiomé-trique de l'âge de la deuxième phase tectonique hercynienne en Galice Moyenne (Nord-Ouest de l'Espagne). Comptes Rendus de l'Académie des Sciences, Paris, 270, 2527-2530
27. Carracedo, M., Paquette, J. L., Alonso Olazabal, A., Santos Zalduegui, J. F., García de Madinabeitia, S., Tiepolo, M. & Gil Ibarguchi, J. I. 2009. U-Pb dating of granodiorite and granite units of the Los Pedroches batholith. Implications for geodynamic models of the southern Central Iberian Zone (Iberian Massif). International Journal of Earth Sciences, 98, 1609-1624, http://dx. doi. org/10. 1007/s00531-008-0317-0
28. Castiñeiras, P., Villaseca, C., Barbero, L. & Martín Romera, C. 2008. SHRIMP U-Pb zircon dating of anatexis in high-grade migmatite complexes of Central Spain: implications in the Hercynian evolution of Central Iberia. International Journal of Earth Sciences, 97, 35-50, http://dx. doi. org/10. 1007/s00531-006-0167-6
29. Córdoba, D., Banda, E. & Ansorge, J. 1987. The Hercynian crust in northwestern Spain: a seismic survey. Tectonophysics, 132, 321-333
30. 39Ar dating of regional fabrics. Tectonophysics, 277, 307-337
31. Dias, G., Leterrier, J., Mendes, A., Simoes, P. P. & Bertrand, J. M. 1998. U-Pb zircon and monazite geochronology of post-collisional Hercynian granitoids from the Central Iberian Zone (Northern Portugal). Lithos, 45, 349-369, http://dx. doi. org/10. 1016/S0024-4937(98)00039-5
32. Dias, G., Simoes, P. P., Ferreira, N. & Leterrier, J. 2002. Mantle and crustal sources in the genesis of late-Hercynian granitoids (NW Portugal): geochemical and Sr-Nd isotopic constraints. Gondwana Research, 5, 287-305, http://dx. doi. org/10. 1016/S1342-937X (05)70724-3
33. Dias, R. & Ribeiro, A. 1994. Constriction in a transpressive regime: an example in the Iberian branch of the Ibero-Armorican Arc. Journal of Structural Geology, 16, 1543-1554
34. Dias da Silva, Í. 2013. Geología de las Zonas Centro Ibérica y Galicia-Trás-os-Montes en la parte oriental del Complejo de Morais, Portugal/España. PhD thesis, Universidad de Salamanca
35. Dias da Silva, Í., Valverde-Vaquero, P., González Clavijo, E., Díez Montes, A. & Martínez Catalán, J. R. 2012. Structural and stratigraphical significance of U-Pb ages from the Saldanha and Mora volcanic complexes (NE Portugal, Iberian Variscides). In: Oggiano, G., Casini, L., Cuccuru, S., Schulmann, K., Edel, J.-B., Rossi, PH. & Lardeaux, J.-M. (eds) Length Scales, Times Scales and Relative Contribution of Variscan Orogenic Events to Formation of European Crust. Géologie de la France 2012, 1. Societé Géologique de France and Bureau de Recherches Géologiques et Minières, 105-106
36. Díez Balda, M. A., Martínez Catalán, J. R. & Ayarza, P. 1995. Syn-collisional extensional collapse parallel to the orogenic trend in a domain of steep tectonics: the Salamanca detachment zone (Central Iberian Zone, Spain). Journal of Structural Geology, 17, 163-182
37. Díez Fernández, R., Martínez Catalán, J. R., Arenas Martín, R. & Abati Gómez, J. 2011. Tectonic evolution of a continental subduction-exhumation channel: Variscan structure of the basal allochthonous units in NW Spain. Tectonics, 30, TC3009, 1-22, http://dx. doi. org/10. 1029/2010TC002850
38. Díez Fernández, R., Martínez Catalán, J. R., Arenas, R., Abati, J., Gerdes, A. & Fernández-Suárez, J. 2012a. U-Pb detrital zircon analysis of the lower allochthon of NW Iberia: age constraints, provenance and links with the Variscan mobile belt and Gondwanan cratons. Journal of the Geological Society, London, 169, 655-665, http://dx. doi. org/10. 1144/jgs2011-146
39. Díez Fernández, R., Martínez Catalán, J. R., Gómez Barreiro, J. & Arenas, R. 2012b. Extensional flow during gravitational collapse: a tool for setting plate convergence (Padrón migmatitic dome, Variscan belt, NW Iberia). Journal of Geology, 120, 83-103, http://dx. doi. org/10. 1086/662735
40. Díez Montes, A. 2007. La Geología del Dominio 'Ollo de Sapo' en las comarcas de Sanabria y Terra do Bolo. Laboratorio Xeolóxico de Laxe, Serie Nova Terra, 34
41. Díez Montes, A., Martínez Catalán, J. R. & Bellido Mulas, F. 2010. Role of the Ollo de Sapo massive felsic volcanism of NW Iberia in the Early Ordovician dynamics of northern Gondwana. Gondwana Research, 17, 363-376, http://dx. doi. org/10. 1016/j. gr. 2009. 09. 001
42. Ducea, M. N. 2011. Fingerprinting orogenic delamination. Geology, 39, 191-192, http://dx. doi. org/10. 1130/focus022011. 1
43. England, P. C. & Thompson, A. B. 1984. Pressuretemperature-time paths of regional metamorphism I. Heat transfer during the evolution of regions of thickened continental crust. Journal of Petrology, 25, 894-928
44. Escuder Viruete, J., Arenas, R. & Martínez Catalán, J. R. 1994. Tectonothermal evolution associated with Variscan crustal extension in the Tormes Gneiss Dome (NW Salamanca, Iberian Massif, Spain). Tectonophysics, 238, 117-138
45. Escuder Viruete, J., Indares, A. & Arenas, R. 1997. P-T path determinations in the Tormes Gneissic Dome, NW Iberian Massif, Spain. Journal of Metamorphic Geology, 15, 645-663
46. Escuder Viruete, J., Herná iz Huerta, P. P., Valverde-Vaquero, P., Rodríguez Fernández, R. & Dunning, G. 1998. Variscan syncollisional extension in the Iberian Massif: structural, metamorphic and geochronological evidence from the Somosierra sector of the Sierra de Guadarrama (Central Iberian Zone, Spain). Tectonophysics, 290, 87-109
47. Escuder Viruete, J., Indares, A. & Arenas, R. 2000. P-T paths derived from garnet growth zoning in an extensional setting: an example from the Tormes Gneissic Dome (Iberian Massif, Spain). Journal of Petrology, 41, 1488-1518
48. Farias, P. & Marcos, A. 2004. Dominio Esquistoso de Galicia-Trás-os-Montes. In: Vera, J. A. (ed.) Geología de España. SGE-IGME, Cap. 2. Instituto Geológico y Minero de España, Madrid, 135-138
49. Farias, P., Gallastegui, G. et al. 1987. Aportaciones al conocimiento de la litoestratigrafía y estructura de Galicia Central. Memórias da Faculdade de Ciências, Universidade do Porto, 1, 411-431
50. Fernández, M., Marzán, I., Correia, A. & Ramalho, E. 1998. Heat flow, heat production, and lithospheric thermal regime in the Iberian Peninsula. Tectonophysics, 291, 29-53
51. Fernández-Suárez, J., Gutiérrez-Alonso, G., Jenner, G. A. & Jackson, S. E. 1998. Geochronology and geochemistry of the Pola de Allande granitoids (northern Spain). Their bearing on the Cadomian/Avalonian evolution of NW Iberia. Canadian Journal of Earth Sciences, 35, 1439-1453
52. Fernández-Suárez, J., Dunning, G. R., Jenner, G. A. & Gutiérrez-Alonso, G. 2000. Variscan collisional magmatism and deformation in NW Iberia: constraints from U-Pb geochronology of granitoids. Journal of the Geological Society, London, 157, 565-576
53. Fernández-Suárez, J., Arenas, R., Abati, J., Martí-nez Catalán, J. R., Whitehouse, M. J. & Jeffries, T. E. 2007. U-Pb chronometry of polymetamorphic high-pressure granulites: an example from the allochthonous terranes of the NW Iberian Variscan belt. In: Hatcher, R. D., Jr., Carlson, M. P., McBride, J. H. & Martínez Catalán, J. R. (eds) 4-D Framework of Continental Crust. Geological Society of America, Boulder, Memoirs, 200, 469-488, http://dx. doi. org/10. 1130/2007. 1200(24)
54. Fernández-Viejo, G., Gallart, J., Pulgar, J. A., Córdoba, D. & Dañobeitia, J. J. 2000. Seismic signature of Variscan and Alpine tectonics in NW Iberia: crustal structure of the Cantabrian Mountains and Duero basin. Journal of Geophysical Research, 105, 3001-3018
55. Galán, G., Pin, C. & Duthou, J. L. 1996. Sr-Nd isotopic record of multi-stage interactions between mantlederived magmas and crustal components in a collision context-the ultramafic-granitoid association from Vivero (Hercynian belt, NW Spain). Chemical Geology, 131, 67-91
56. García-López, S., Bastida, F. et al. 1999. Los episodios metamórficos de la Zona Cantábrica y su contexto estructural. Trabajos de Geología, Universidad de Oviedo, 21, 177-187
57. 39Ar laserprobe dating of mylonitic fabrics in a polyorogenic terrane of NW Iberia. Journal of the Geological Society, London, 163, 61-73
58. Gómez-Barreiro, J., Martínez Catalán, J. R., Díez Fernández, R., Arenas, R. & Díaz García, F. 2010. Upper crust reworking during gravitational collapse: the Bembibre-Pico Sacro detachment system (NW Iberia). Journal of the Geological Society, London, 167, 769-784, http://dx. doi. org/10. 1144/0016-76492009-160
59. Gutiérrez-Alonso, G., Fernández-Suárez, J. & Jeffries, T. E. 2004a. Age and setting of the Upper Neoproterozoic Narcea Antiform volcanic rocks (NW Iberia). Geogaceta, 35, 79-82
60. Gutiérrez-Alonso, G., Fernández-Suárez, J. &Weil, A. B. 2004b. Orocline-triggered lithospheric delamination. In: Sussman, A. J. & Weil, A. B. (eds) Orogenic Curvature: Integrating Paleomagnetic and Structural Analyses. Geological Society of America Special Papers, 383, 121-1308
61. Gutiérrez-Alonso, G., Fernández-Suárez, J. et al. 2011. Diachronous post-orogenic magmatism within a developing orocline in Iberia, European Variscides. Tectonics, 30, 1-17, http://dx. doi. org/10. 1029/2010TC002845
62. Hernández Enrile, J. L. 1991. Extensional tectonics of the Toledo ductile-brittle shear zone, central Iberian Massif. Tectonophysics, 191, 311-324
63. Iglesias Ponce de León, M. & Choukroune, P. 1980. Shear zones in the Iberian arc. Journal of Structural Geology, 2, 63-68
64. Julivert, M., Fontboté, J. M., Ribeiro, A. & Conde, L. 1972. Mapa Tectónico de la Península Ibérica y Baleares E. 1: 1 000 000. Instituto Geológico y Minero de España, Madrid
65. Lotze, F. 1929. Stratigraphie und Tektonik des Keltiberischen Grundgebirges (Spanien). Abhandlungen Gesellschaft der Wissenschaften zu Göttingen, Mathematisch-Physischen, 14, 143-462
66. Lotze, F. 1945. Zur Gliederung der Varisziden der Iberischen Meseta. Geotektonische Forschungen, 6, 78-92
67. Lotze, F. 1950. Observaciones Respecto a la División de los Varíscides de la Meseta Ibérica. Publicaciones Extranjeras Sobre Geología de España, Instituto Lucas Mallada, CSIC, Madrid, V. Translated by J. M. Ríos
68. Lotze, F. 1954-1955. Estratigrafía y Tectónica de las Cadenas Paleozoicas Celtibéricas. Publicaciones Extranjeras Sobre Geología de España, Instituto Lucas Mallada, CSIC, Madrid, VIII. Translated by M. San Miguel de la Cámara
69. Marquínez García, J. L. 1984. La Geología del Área Esquistosa de Galicia Central (Cordillera Herciniana, NW de España). Memorias del Instituto Geológico y Minero de España, 100. IGME, Madrid
70. Martínez, F. J., Corretgé, L. G. & Suárez, O. 1990. Central-Iberian Zone. Autochthonous sequences. Distribution, characteristics and evolution of metamorphism. In: Dallmeyer, R. D. & Martínez García, E. (eds) Pre-Mesozoic Geology of Iberia. Springer-Verlag, Berlín, 207-211
71. Martínez Catalán, J.R. 2011. Are the oroclines of the Variscan belt related to late Variscan strike-slip tectonics? Terra Nova, 23, 241-247, http://dx. doi. org/10. 1111/j. 1365-3121. 2011. 01005. x
72. Martínez Catalán, J. R. 2012. The Central Iberian arc, an orocline centered in the Iberian Massif and some implications for the Variscan belt. International Journal of Earth Sciences, 101, 1299-1314, http://dx. doi. org/10. 1007/s00531-011-0715-6
73. Martínez Catalán, J. R., Arenas, R., Díaz García, F., Rubio Pascual, F. J., Abati, J. & Marquínez, J. 1996. Variscan exhumation of a subducted Paleozoic continental margin: the basal units of the Ordenes Complex, Galicia, NWSpain. Tectonics, 15, 106-121
74. Martínez Catalán, J. R., Díaz García, F. et al. 2002. Thrust and detachment systems in the Ordenes Complex (northwestern Spain): implications for the Variscan-Appalachian geodynamics. In: Martínez Catalán, J. R., Hatcher, R. D., Jr., Arenas, R. & Díaz García, F. (eds) Variscan-Appalachian Dynamics: The Building of the Late Paleozoic Basement. Geological Society of America Special Papers, 364, 163-182
75. Martínez Catalán, J. R., Arenas, R. & Díez Balda, M. A. 2003. Large extensional structures developed during emplacement of a crystalline thrust sheet: the Mondoñedo nappe (NW Spain). Journal of Structural Geology, 25, 1815-1839
76. Martínez Catalán, J. R., Fernández-Suárez, J., Jenner, G. A., Belousova, E. & Díez Montes, A. 2004. Provenance constraints from detrital zircon U-Pb ages in the NW Iberian Massif: implications for Paleozoic plate configuration and Variscan evolution. Journal of the Geological Society, London, 161, 461-473
77. Martínez Catalán, J. R., Arenas, R. et al. 2007. Space and time in the tectonic evolution of the northwestern Iberian Massif. Implications for the Variscan belt. In: Hatcher, R. D., Jr., Carlson, M. P., McBride, J. H. & Martínez Catalán, J. R. (eds) 4-D Framework of Continental Crust. Geological Society of America, Boulder, Memoirs, 200, 403-423, http://dx. doi. org/10. 1130/2007. 1200(21)
78. Martínez Catalán, J. R., Fernández-Suárez, J., Meireles, C., González Clavijo, E., Belousova, E. & Saeed, A. 2008. U-Pb detrital zircon ages in synorogenic deposits of the NW Iberian Massif (Variscan belt): interplay of Devonian-Carboniferous sedimentation and thrust tectonics. Journal of the Geological Society, London, 165, 687-698
79. Martínez Catalán, J. R., Arenas, R. et al. 2009. A rootless suture and the loss of the roots of a mountain chain: the Variscan belt of NW Iberia. Comptes Rendus Geoscience, 341, 114-126
80. Martínez Catalán, J. R., Alvarez Lobato, F., Pinto, V., Gómez Barreiro, J., Ayarza, P., Villalaín, J. & Casas, J. 2012. Gravity and magnetic anomalies in the allochthonous Órdenes Complex (Variscan belt, NW Spain): assessing its internal structure and thickness. Tectonics, 31, 1-18, http://dx. doi. org/10. 1029/2011TC003093
81. Martínez Poyatos, D., Carbonell, R. et al. 2012. Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect. Tectonics, 31, TC3017, 1-21, http://dx. doi. org/10. 1029/2011TC002995
82. Martins, H. C. B., Sant'Ovaia, H. & Noronha, F. 2009. Genesis and emplacement of felsic Variscan plutons within a deep crustal lineation, the Penacova-Régua-Verín fault: an integrated geophysics and geochemical study (NW Iberian Peninsula). Lithos, 111, 142-155, http://dx. doi. org/10. 1016/j. lithos. 2008. 10. 018
83. Meireles, C. A. P. 2011. Litoestratigrafia do Paleozóico do Sector a Nordeste de Bragança (Tras-os-Montes). PhD thesis, Universidade do Porto
84. Murphy, J. B. & Nance, R. D. 1991. Supercontinent model for the contrasting character of Late Proterozoic orogenic belts. Geology, 31, 873-876
85. Neiva, A. M. R., Williams, I. S., Ramos, J. M. F., Gomes, M. E. P., Silva, M. M. V. G. & Antunes, I. M. H. R. 2009. Geochemical and isotopic constraints on the petrogenesis of Early Ordovician granodiorite and Variscan two-mica granites from the Gouveia area, central Portugal. Lithos, 111, 186-202, http://dx. doi. org/10. 1016/j. lithos. 2009. 01. 005
86. Ordóñez Casado, B., Gebauer, D., Schäfer, H. J., Gil Ibarguchi, J. I. & Peucat, J. J. 2001. A single Devonian subduction event for the HP/HT metamorphism of the Cabo Ortegal complex within the Iberian Massif. Tectonophysics, 332, 359-385
87. Ortega Cuesta, L. A. 1998. Estudio petrogenético del granito sincinemático de dos micas de A Espenuca (A Coruña). Laboratorio Xeolóxico de Laxe, Serie Nova Terra, 14, Ediciones do Castro, Sada, A Coruña, 377
88. Pereira, M. D. 1998. Pressure and temperature conditions in the generation of an anatectic complex in central Spain: the Peña Negra complex. Petrology, 6, 555-563
89. Pérez-Estaún, A., Bastida, F. et al. 1988. A thin-skinned tectonics model for an arcuate fold and thrust belt: the Cantabrian Zone (Variscan Ibero-Armorican Arc). Tectonics, 7, 517-537
90. Pérez-Estaún, A., MartínezCatalán, J. R. &Bastida, F. 1991. Crustal thickening and deformation sequence in the footwall to the suture of the Variscan Belt of northwest Spain. Tectonophysics, 191, 243-253
91. Pérez-Estaún, A., Pulgar, J. A. et al. 1994. Crustal structure of the external variscides in northwest Spain from deep seismic reflection profiling. Tectonophysics, 232, 91-118
92. Pérez-Estaún, A., Pulgar, J. A., Álvarez-Marrón, J. & ESCI-N GROUP 1997. Crustal structure of the Cantabrian Zone: seismic image of a Variscan foreland thrust and fold belt (NW Spain). Revista de la Sociedad Geológica de España, 8, 307-319
93. Pulgar, J. A., Pérez-Estaún, A., Gallart, J., Alvarez-Marrón, J., Gallastegui, J., Alonso, J. L. & ESCIN GROUP 1997. The Escin-N2 deep seismic reflection profile: a traverse across the Cantabrian Mountains and adjacent Duero basin. Revista de la Sociedad Geológica de España, 8, 383-394
94. Ramsay, J. G. 1967. Folding and Fracturing of Rocks. McGraw-Hill, New York
95. Reche, J., Martínez, F. J., Arboleya, M. L., Dietsch, C. & Briggs, W. D. 1998. Evolution of a kyanitebearing belt within a HT-LP orogen: the case of NW Variscan Iberia. Journal of Metamorphic Geology, 16, 379-394
96. Regêncio Macedo, C. A. 1988. Granitóides, Complexo xisto-grauváquico e Ordovícico na região entre Trancoso e Pinhel (Portugal Central). PhD thesis, Universidade de Coimbra
97. Rey, P., Burg, J. P. &Casey, M. 1997. The Scandinavian Caledonides and their relationship to the Variscan Belt. In: Burg, J. P. & Ford, M. (eds) Orogeny Through Time. Geological Society, London, Special Publications, 121, 179-200
98. Ribeiro, A., Pereira, E. & Dias, R. 1990. Central-Iberian Zone. Allochthonous Sequences. Structure in the Northwest of the Iberian Peninsula. In: Dallmeyer, R. D. & Martínez García, E. (eds) Pre-Mesozoic Geology of Iberia. Springer, Berlin, 220-236
99. Robardet, M. 2002. Alternative approach to the Variscan Belt of southwestern Europe: preorogenic paleobiogeographical constraints. In: Martínez Catalán, J. R., Hatcher, R. D., Jr., Arenas, R. & Díaz García, F. (eds) Variscan-Appalachian Dynamics: The Building of the Late Paleozoic Basement. Geological Society of America Special Papers, 364, 1-15
100. Robardet, M. 2003. The Armorica 'microplate': fact or fiction? Critical review of the concept and contradictory paleobiogeographical data. Palaeogeography, Palaeoclimatology, Palaeoecology, 195, 125-148
101. 39Ar ages during Variscan exhumation of a subducted crust (Malpica-Tui complex, NW Spain). Lithos, 70, 111-139
102. Rodríguez Alonso, M. D., Peinado, M., López-Plaza, M., Franco, P., Carnicero, A. & Gonzalo, J. C. 2004. Neoproterozoic-Cambrian synsedimentary magmatism in the Central Iberian Zone (Spain): geology, petrology and geodynamic significance. International Journal of Earth Sciences, 93, 897-920
103. Román-Berdiel, T., Pueyo-Morer, E. L. & Casas-Sáiz, A. M. 1995. Granite emplacement during contemporary shortening and normal faulting: structural and magnetic study of the Veiga Massif (NW Spain). Journal of Structural Geology, 17, 1689-1706
104. Rubio Pascual, F. J. 2012. Evolución Tectonotermal Varisca del Sistema Central en Somosierra-Honrubia. PhD thesis, Universidad Complutense, Madrid
105. 39Ar ages. Tectonophysics, 587, 207-221, http://dx. doi. org/10. 1016/j. tecto. 2012. 10. 005
106. Sánchez Martínez, S., Arenas, R., Andonaegui, P., Martínez Catalán, J. R. & Pearce, J. A. 2007. Geochemistry of two associated ophiolites from the Cabo Ortegal complex (Variscan belt of northwest Spain). In: Hatcher, R. D., Jr., Carlson, M. P., McBride, J. H. & Martínez Catalán, J. R. (eds) 4-D Framework of Continental Crust. Geological Society of America, Boulder, Memoirs, 200, 445-467, http://dx. doi. org/10. 1130/2007. 1200(23)
107. Schellart, W. P. & Lister, G. S. 2004. Tectonic models for the formation of arc-shaped convergent zones and back-arc basins. In: Sussman, A. J. & Weil, A. B. (eds) Orogenic curvature: Integrating Paleomagnetic and Structural Analyses. Geological Society of America Special Papers, 383, 237-258
108. Solá, A. R., Williams, I. S., Neiva, A. M. R. & Ribeiro, M. L. 2009. U-Th-Pb SHRIMP ages and oxygen isotope composition of zircon from two contrasting late Variscan granitoids, Nisa-Albuquerque batholith, SW Iberian Massif: petrologic and regional implications. Lithos, 111, 156-167, http://dx. doi. org/10. 1016/j. lithos. 2009. 03. 045
109. Spalla, M. I. &Marotta, A. M. 2007. P-T evolution vs. numerical modelling: a key to unravel the Paleozoic to early-Mesozoic tectonic evolution of the Alpine area. Periodico di Mineralogia, 76, 267-308, http://dx. doi. org/10. 2451/2007PM0029
110. Spear, F. S., Kohn, M. J. & Cheney, J. T. 1999. P-T paths from anatectic pelites. Contributions to Mineralogy and Petrology, 134, 17-32
111. Staub, R. 1926. Gedanken zur Tektonik Spaniens. Vierteljahrsschrift der Naturforschenden Gesellschaft, Zürich, 71, 196-260
112. Staub, R. 1927. Ideas sobre la tectónica de España. Versión española y Prólogo de A. Carbonell T-F. Real Academia de Ciencias, Bellas Letras y Nobles Artes de Córdoba
113. Suess, E. 1888. Das Antlitz der Erde, II. Tempsky, Wien
114. Thompson, A. B. & England, P. C. 1984. Pressure-temperature-time paths of regional metamorphism II. Their inference and interpretation using mineral assemblages in metamorphic rocks. Journal of Petrology, 25, 929-955
115. Tirel, C., Brun, J. P. & Burov, E. 2004. Thermomechanical modeling of extensional gneiss domes. In: Whitney, D. L., Teyssier, C. & Siddoway, C. S. (eds) Gneiss Domes in Orogeny. Geological Society of America Special Papers, 380, 67-78
116. Ugidos, J. M., Bilström, K., Valladares, M. I. & Barba, P. 2003. Geochemistry of the Upper Neoproterozoic and Lower Cambrian siliciclastic rocks and U-Pb dating on detrital zircons in the Central Iberian Zone, Spain. International Journal of Earth Sciences, 92, 661-676
117. Valladares, M. I., Barba, P., Ugidos, J. M., Colmenero, J. R. & Armenteros, I. 2000. Upper Neoproterozoic-Lower Cambrian sedimentary successions in the Central Iberian Zone (Spain): sequence stratigraphy, petrology and chemostratigraphy. Implications for the other European zones. International Journal of Earth Sciences, 89, 2-20
118. Valle Aguado, B., Azevedo, M. R., Schaltegger, U., Martínez Catalán, J. R. & Nolan, J. 2005. U-Pb zircon and monazite geochronology of Variscan magmatism related to syn-convergence extension in Central Northern Portugal. Lithos, 82, 169-184
119. Valverde-Vaquero, P. 1997. An Integrated Field, Geochemical and U-Pb Geochronological Study of the Southwest Hermitage Flexure (Newfoundland Appalachians, Canada) and the Sierra de Guadarrama (Iberian Massif, Central Spain): A Contribution to the Understanding of the Geological Evolution of Circum-Atlantic Peri-Gondwana. PhD thesis, Memorial University of Newfoundland, St John's, Canada
120. Valverde-Vaquero, P., Cuesta Fernández, A., Gallastegui, G., Suárez, O., Corretgé, L. G. & Dunning, G. R. 1999. U-Pb dating of late-Variscan magmatism in the Cantabrian Zone (northern Spain). In: Proceedings of EUG 10. European Union of Geosciences, Strasbourg, France, 4, 101
121. Valverde-Vaquero, P., Marcos, A., Farias, P. & Gallastegui, G. 2005. U-Pb dating of Ordovician felsic volcanism in the Schistose Domain of the Galicia-Trás-os-Montes Zone near Cabo Ortegal (NW Spain). Geológica Acta, 3, 27-37
122. Valverde-Vaquero, P., Díez Balda, M. A. et al. 2007. The "hot orogen": two separate variscan low-pressure metamorphic events in the Central Iberian Zone. In: Faure, M., Lardeaux, J.-M., Ledru, P., Peschler, A. & Schulmann, K. (eds) Mechanics of Variscan Orogeny: a Modern View on Orogenic Research. Géologie de la France 2007, 2. Societé Géologique de France and Bureau de Recherches Géologiques et Minières, 168
123. Whitney, D. L., Teyssier, C. & Vanderhaeghe, O. 2004. Gneiss domes and crustal flow. In: Whitney, D. L., Teyssier, C. & Siddoway, C. S. (eds) Gneiss Domes in Orogeny. Geological Society of America Special Papers, 380, 15-33
124. Young, T. P. 1990. Ordovician sedimentary facies and faunas of Southwest Europe: palaeogeographic and tectonic implications. In: McKerrow, W. S. & Scotese, C. R. (eds) Palaeozoic Palaeogeography and Biogeography. Geological Society, London, Memoirs, 12, 421-430
125. Zeck, H. P., Wingate, M. T. D. & Pooley, G. 2007. Ion microprobe U-Pb zircon geochronology of a late tectonicgranitic-gabbroic rock complex within the Hercynian Iberian belt. Geological Magazine, 144, 157-177