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

Volumn 169, Issue 6, 2012, Pages 655-665

  Fernández, Rubén Díez ^a   Martínez Catalán, José R ^a   Arenas, Ricardo ^b   Abati, Jacobo ^b   Gerdes, Axel ^c,d   Fernández Suárez, Javier ^b  

^a UNIVERSITY OF SALAMANCA   (Spain)

^b Facultad de Ciencias Geológicas   (Spain)

^c GOETHE UNIVERSITY   (Germany)

^d STELLENBOSCH UNIVERSITY   (South Africa)

Author keywords

[No Author keywords available]

Indexed keywords

AGE CONSTRAINTS; CONTINENTAL MARGIN; DETRITAL ZIRCON; LASER-ABLATION INDUCTIVELY-COUPLED PLASMA MASS SPECTROMETRY; NEOPROTEROZOIC; REGIONAL TRENDS; VARISCAN; ZIRCON AGE;

INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY; LEAD; ZIRCON;

PILES;

ALLOCHTHON; CRATON; DETRITAL DEPOSIT; GEOCHRONOLOGY; GONDWANA; HERCYNIAN OROGENY; MOBILE BELT; PROVENANCE; SEDIMENTATION; SILICICLASTIC DEPOSIT; URANIUM-LEAD DATING; ZIRCON;

IBERIAN PENINSULA;

EID: 84868525136     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/jgs2011-146     Document Type: Article

References (84)

1. Abati, J., Dunning, G.R., Arenas, R., Díaz García, F., González Cuadra, P., Martínez Catalán, J.R. & Andonaegui, P. 1999. Early ordovician orogenic event in Galicia (NW Spain): evidence from U-Pb ages in the uppermost unit of the ordenes Complex. Earth and Planetary Science Letters, 165, 213-228.
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.
3. ANCOCHEA, E., ARENAS, R., BRANDLE, J.L., PEINADO, M. & SAGREDO, J. 1988. Caracterizacion de las rocas metavolcanicas siluricas del No del Macizo Iberico. Geociencias, Aveiro, 3, 23-34.
4. Arenas, R. 1988. Evolucion petrologica y geoquimica de la unidad aloctona inferior del complejo metamorfico basico-ultrabasico de Cabo ortegal (Unidad de Moeche) y del Silurico parautoctono, Cadena Hercinica Iberica (NW de Espana). Corpus Geologicum Gallaecia, 4, 1-543.
5. ARENAS, R., GIL IBARGUCHI, J.I., et al. 1986. Tectonostratigraphic units in the complexes with mafic and related rocks of the NW of the Iberian Massif. Hercynica, 2, 87-110.
6. ARENAS, R., RUBIO PASCUAL, F.J., DÍAZ GARCÍA, F. & MARTÍNEZ CATALÁN, J.R. 1995. High-pressure micro-inclusions and development of an inverted metamorphic gradient in the Santiago schists (Ordenes Complex, NW Iberian Massif, Spain)-evidence of subduction and syncollisional decompression. Journal of Metamorphic Geology, 13, 141-164.
7. ARENAS, R., MARTÍNEZ CATALÁN, J.R., SÁNCHEZ MARTÍNEZ, S., Fernández-Suárez, J., ANDONAEGUI, P., PEARCE, J.A. & CORFÚ, F. 2007. The Vila de Cruces ophiolite: a remnant of the early Rheic ocean in the Variscan suture of Galicia (northwest Iberian Massif). Journal of Geology, 115, 129-148.
8. ARENAS, R., SÁNCHEZ MARTÍNEZ, S., CASTINEIRAS, P., JEFFRIES, T.E., DÍEZ FERNÁNDEZ, R. & ANDONAEGUI, P. 2009. The basal tectonic melange of the Cabo ortegal Complex (NW Iberian Massif): a key unit in the suture of Pangea. Journal of Iberian Geology, 35, 85-125.
9. AVIGAD, D., GERDES, A., MORAG, N. & BECHSTÄDT, T. 2012. Coupled U-Pb-Hf of detrital zircons of Cambrian sandstones from Morocco and Sardinia: implications for provenance and Precambrian crustal evolution of North Africa. Gondwana Research, 21, 690-703.
10. BARRERA, J.L., FARIAS, P., ET AL. 1989. Mapa y memoria de la Hoja no 17-27 (Orense-Verín) del Mapa Geológico de España, Escala 1/200.000. Instituto Geologico y Minero de Espana, Madrid.
11. 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.
12. BRAID, J.A., MURPHY, J.B., QUESADA, C. & MORTENSEN, J. 2011. Tectonic escape of a crustal fragment during the closure of the Rheic ocean: U-Pb detrital zircon data from the Late Palaeozoic Pulo do Lobo and South Portuguese zones, southern Iberia. Journal of the Geological Society, London, 168, 383-392.
13. CABY, R. 2003. Terrane assembly and geodynamic evolution of central-western Hoggar: a synthesis. Journal of African Earth Sciences, 37, 133-159.
14. CASTIÑEIRAS, P., DÍAZ GARCÍA, F. & GÓMEZ BARREIRO, J. 2010. REE-assisted U-Pb zircon age (SHRIMP) of an anatectic granodiorite: constraints on the evolution of the A Silva granodiorite, Iberian allochthonous complexes. Lithos, 116, 153-166.
15. CORDANI, U.G., TEIXEIRA, W., D'AGRELLA, M.S. & TRINDADE, R.I. 2009. The position of the Amazonian craton in supercontinents. Gondwana Research, 15, 396-407.
16. CHANG, Z., VERVOORT, J.D., MCCLELLAND, W.C. & KNAACK, C. 2006. U-Pb dating of zircon by LA-ICP-MS. Geochemistry, Geophysics, Geosystems, 7, Q05009, doi: 10.1029/2005gc001100.
17. DIAS DA SILVA, I. & GONZÁLEZ CLAVIJO, E. 2010. New data on tectonometamorphic evolution of the Peri-Trasmontano domain (Schistose Domain) in Northeastern Portugal. Boletín Geológico y Minero, 121, 45-56.
18. DIAS DA SILVA, I., 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: Length Scales, times Scales and Relative Contribution of Variscan Orogenic Events to Formation of European Crust. Geologie de la France/BRGM, France, 1, 105-106.
19. DÍAZ GARCÍA, F., ARENAS, R., MARTÍNEZ CATALÁN, J.R., DEL TANAGO, J.G. & DUNNING, G.R. 1999. Tectonic evolution of the Careon ophiolite (northwest Spain). A remnant of oceanic lithosphere in the Variscan belt. Journal of Geology, 107, 587-605.
20. DÍAZ GARCÍA, F., SÁNCHEZ MARTÍNEZ, S., CASTIÑEIRAS, P., FUENLABRADA, J.M. & ARENAS, R. 2010. A peri-Gondwanan arc in NW Iberia II: assessment of the intra-arc tectonothermal evolution through U-Pb SHRIMP dating of mafic dykes. Gondwana Research, 17, 352-362.
21. DÍEZ FERNÁNDEZ, R. & MARTÍNEZ CATALÁN, J.R. 2009. 3D analysis of an ordovician igneous ensemble: a complex magmatic structure hidden in a polydeformed allochthonous Variscan unit. Journal of Structural Geology, 31, 222-236.
22. DÍEZ FERNÁNDEZ, R., MARTÍNEZ CATALÁN, J.R., GERDES, A., ABATI, J., ARENAS, R. & Fernández-Suárez, J. 2010. U-Pb ages of detrital zircons from the basal allochthonous units of NW Iberia: provenance and paleoposition on the northern margin of Gondwana during the Neoproterozoic and Paleozoic. Gondwana Research, 18, 385-399.
23. DÍEZ FERNÁNDEZ, R., CASTIÑEIRAS, P. & GÓMEZ BARREIRO, J. 2012a. Age constraints on lower Paleozoic convection system: magmatic events in the NW Iberian Gondwana margin. Gondwana Research, 21, 1066-1079.
24. DÍEZ FERNÁNDEZ, R., MARTÍNEZ CATALÁN, J.R., GÓMEZ BARREIRO, J. & ARENAS, R. 2012b. Extensional flow during gravitational collapse: a tool for setting plate convergence (Padron migmatitic dome, Variscan belt, NW Iberia). Journal of Geology, 120, 83-103.
25. 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.
26. DROST, K., GERDES, A., JEFFRIES, T., LINNEMANN, U. & STOREY, C. 2011. Provenance of Neoproterozoic and early Paleozoic siliciclastic rocks of the Tepla-Barrandian unit (Bohemian Massif): evidence from U-Pb detrital zircon ages. Gondwana Research, 19, 213-231.
27. EGUILUZ, L., GIL IBARGUCHI, J.I., ABALOS, B. & APRAIZ, A. 2000. Superposed Hercynian and Cadomian orogenic cycles in the ossa-Morena zone and related areas of the Iberian Massif. Geological Society of America Bulletin, 112, 1398-1413.
28. ennih, N. & liégeois, J.P. 2008. The boundaries of the West African craton, with special reference to the basement of the Moroccan metacratonic Anti-Atlas belt. In: ennih, N. & liégeois, J.P. (eds) the Boundaries of the West African Craton. Geological Society, London, Special Publication, 297, 1-17.
29. FARIAS, P. & MARCOS, A. 2004. Dominio Esquistoso de Galicia-Tras-os-Montes. In: verA, J.A. (ed.) Geología de España. SGE-IGME, Madrid, 135-138.
30. FARIAS, P., GALLASTEGUI, G., et al. 1987. Aportaciones al conocimiento de la litoestratigrafia y estructura de Galicia Central. Memorias da Faculdade de Ciencias, Universidade do Porto, 1, 411-431.
31. FERNÁNDEZ-SUÁREZ, J., GUTIÉRREZ-ALONSO, G., JENNER, G.A. & TUBRETT, M.N. 2000. New ideas on the Proterozoic-Early Palaeozoic evolution of NW Iberia: insights from U-Pb detrital zircon ages. Precambrian Research, 102, 185-206.
32. FERNÁNDEZ-SUÁREZ, J., GUTIÉRREZ-ALONSO, G., COX, R. & JENNER, G.A. 2002. Assembly of the Armorica microplate: a strike-slip terrane delivery? Evidence from U-Pb ages of detrital zircons. Journal of Geology, 110, 619-626.
33. Fernández-Suárez, J., DÍAZ GARCÍA, F., JEFFRIES, T.E., ARENAS, R. & ABATI, J. 2003. Constraints On the provenance of the uppermost allochthonous terrane of the NW Iberian Massif: inferences from detrital zircon U-Pb ages. terra Nova, 15, 138-144.
34. Frei, D. & gerDes, A. 2009. Precise and accurate in situ U-Pb dating of zircon with high sample throughput by automated LA-SF-ICP-MS. Chemical Geology, 261, 261-270.
35. FUENLABRADA, J.M., ARENAS, R., SÁNCHEZ MARTÍNEZ, S., DÍAZ GARCÍA, F. & CASTIÑEIRAS, P. 2010. A peri-Gondwanan arc in NW Iberia: I: isotopic and geochemical constraints on the origin of the arc-a sedimentary approach. Gondwana Research, 17, 338-351.
36. GALLASTEGUI, G., MARTÍN PARRA, L.M., DE PABLO MACIÁ, J.G. & Rodríguez-Fernández, L.R. 1987. Las metavulcanitas del Dominio Esquistoso de Galicia-Tras-os-Montes: petrografia, geoquimica y ambiente geotectonico (Galicia, No de Espana). Cuadernos do Laboratorio Xeolóxico de Laxe, 12, 127-139.
37. GERDES, A. & ZEH, A. 2006. Combined U-Pb and Hf isotope LA-(MC-)ICP-MS analyses of detrital zircons: comparison with SHRIMP and new constraints for the provenance and age of an Armorican metasediment in Central Germany. Earth and Planetary Science Letters, 249, 47-61.
38. GERDES, A. & ZEH, A. 2009. Zircon formation versus zircon alteration-new insights from combined U-Pb and Lu-Hf in-situ LA-ICP-MS analyses, and consequences for the interpretation of Archean zircon from the Central Zone of the Limpopo Belt. Chemical Geology, 261, 230-243.
39. GÓMEZ BARREIRO, J., MARTÍNEZ CATALÁN, J.R., ARENAS, R., CASTIÑEIRAS, P., ABATI, J., DÍAZ GARCÍA, F. & WIJBRANS, J.R. 2007. Tectonic evolution of the upper allochthon of the Ordenes Complex (northwestern Iberian Massif): structural constraints to a polyorogenic peri-Gondwanan terrane. In: linneMAnn, U., nAnce, R.D., KrAFt, P. & zulAuF, G. (eds) the Evolution of the Rheic Ocean: From Avalonian-Cadomian Active Margin to Alleghenian-Variscan Collision. Geological Society of America, Special Papers, 423, 315-332.
40. 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.
41. GONZÁLEZ CLAVIJO, E. & MARTÍNEZ CATALÁN, J.R. 2002. Stratigraphic record of preorogenic to synorogenic sedimentation and tectonic evolution of imbricate units in the Alcanices synform (northwestern Iberian Massif). In: MArtínez cAtAlán, J.R., hAtcher, R.D., ArenAs, R. & DíAz gArcíA, F. (eds) Variscan-Appalachian Dynamics: the Building of the Late Paleozoic Basement. Geological Society of America, Special Papers, 17-35.
42. GUTIÉRREZ-ALONSO, G., FERNÁNDEZ-SUÁREZ, J., JEFFRIES, T.E., JENNER, G.A., TUBRETT, M.N., COX, R. & JACKSON, S.E. 2003. Terrane accretion and dispersal in the northern Gondwana margin. An early Paleozoic analogue of a long-lived active margin. tectonophysics, 365, 221-232.
43. GUTIÉRREZ-MARCO, J.C., SARMIENTO, G.N., ROBARDET, M., RÁBANO, I. & VANEK, J. 2001. Upper Silurian fossils of Bohemian type from NW Spain and their palaeogeographical interest. Journal of the Czech Geological Society, 46, 247-258.
44. HENRY, B., LIÉGEOIS, J.P., et al. 2009. Repeated granitoid intrusions during the Neoproterozoic along the western boundary of the Saharan metacraton, Eastern Hoggar, Tuareg shield, Algeria: an AMS and U-Pb zircon age study. tectonophysics, 474, 417-434.
45. HOSKIN, P.W.O. 2000. Patterns of chaos: fractal statistics and the oscillatory chemistry of zircon. Geochimica et Cosmochimica Acta, 64, 1905-1923.
46. IGLESIAS, M. & ROBARDET, M. 1980. El Silurico de Galicia Media (Central), su importancia en la paleogeografia varisca. Cuadernos do Laboratorio Xeolóxico de Laxe, 1, 99-115.
47. JACKSON, S.E., PEARSON, N.J., GRIFFIN, W.L. & Belousova, E.A. 2004. The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U-Pb zircon geochronology. Chemical Geology, 211, 47-69.
48. JANOUSEK, V., GERDES, A., VRANA, S., FINGER, F., ERBAN, V., FRIEDL, G. & BRAITHWAITE, C.J.R. 2006. Low-pressure granulites of the Lisov Massif, Southern Bohemia: Visean metamorphism of Late Devonian plutonic arc rocks. Journal of Petrology, 47, 705-744.
49. KALSBEEK, F., FREI, D. & AFFATON, P. 2008. Constraints on provenance, stratigraphic correlation and structural context of the Volta basin, Ghana, from detrital zircon geochronology: an Amazonian connection? Sedimentary Geology, 212, 86-95.
50. LIÉGEOIS, J.P., LATOUCHE, L., BOUGHRARA, M., NAVEZ, J. & GUIRAUD, M. 2003. The LATEA metacraton (Central Hoggar, Tuareg shield, Algeria): behaviour of an old passive margin during the Pan-African orogeny. Journal of African Earth Sciences, 37, 161-190.
51. LINNEMANN, U., GERDES, A., DROST, K. & BUSCHMANN, B. 2007. The continuum between Cadomian orogenesis and opening of the Rheic ocean: constraints from LA-ICP-MS U-Pb zircon dating and analysis of plate-tectonic setting (Saxo-Thuringian zone, northeastern Bohemian Massif, Germany). In: linneMAnn, U., nAnce, R.D., KrAFt, P. & zulAuF, G. (eds) the Evolution of the Rheic Ocean: From Avalonian-Cadomian Active Margin to Alleghenian-Variscan Collision. Geological Society of America, Special Papers, 423, 61-96.
52. LINNEMANN, U., OUZEGANE, K., DRARENI, A., HOFMANN, M., BECKER, S., GÄRTNER, A. & SAGAWE, A. 2011. Sands of West Gondwana: an archive of secular magmatism and plate interactions-a case study from the Cambro-ordovician section of the Tassili ouan Ahaggar (Algerian Sahara) using U-Pb LA-ICP-MS detrital zircon ages. Lithos, 123, 188-203.
53. LUDWIG, K.R. 2003. User's Manual for Isoplot 3.00: A Geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, Special Publication, 4.
54. MARCOS, A. & FARIAS, P. 1999. La estructura de las laminas inferiores del Complejo de Cabo ortegal y su autoctono relativo (Galicia, NW de Espana). trabajos de Geología, 21, 201-220.
55. MARCOS, A. & LLANA-FÚNEZ, S. 2002. Estratigrafia y estructura de la lamina tectonica del Para-autoctono y de su autoctono en el area de Chantada (Galicia, No de Espana). trabajos de Geología, 23, 53-72.
56. 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.
57. MARTÍNEZ CATALÁN, J.R. 1990. A non-cylindrical model for the northwest Iberian allochthonous terranes and their equivalents in the Hercynian belt of Western Europe. tectonophysics, 179, 253-272.
58. MARTÍNEZ CATALÁN, J.R., ARENAS, R., DÍAZ GARCÍA, F., RUBIO PASCUAL, F.J., ABATI, J. & MARQUÍNEZ GARCÍA, J. 1996. Variscan exhumation of a subducted Paleozoic continental margin: the basal units of the ordenes Complex, Galicia, NW Spain. tectonics, 15, 106-121.
59. MARTÍNEZ CATALÁN, J.R., ARENAS, R., DÍAZ GARCÍA, F. & ABATI, J. 1997. Variscan accretionary complex of northwest Iberia: terrane correlation and succession of tectonothermal events. Geology, 25, 1103-1106.
60. 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., ArenAs, R. & DíAz gArcíA, F. (eds) Variscan-Appalachian Dynamics: the Building of the Late Paleozoic Basement. Geological Society of America, Special Papers, 163-182.
61. 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 Palaeozoic plate configuration and Variscan evolution. Journal of the Geological Society, London, 161, 463-476.
62. 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 Géoscience, 341, 114-126.
63. MONTERO, P., TALAVERA, C., BEA, F., LODEIRO, F.G. & WHITEHOUSE, M.J. 2009.Zircon geochronology of the ollo de Sapo Formation and the age of the Cambro-ordovician rifting in Iberia. Journal of Geology, 117, 174-191.
64. MURPHY, J.B., Gutiérrez-Alonso, G., Fernández-Suárez, J. & BRAID, J.A. 2008. Probing crustal and mantle lithosphere origin through ordovician volcanic rocks along the Iberian passive margin of Gondwana. tectonophysics, 461, 166-180.
65. NANCE, R.D. & MURPHY, J.B. 1994. Contrasting basement isotopic signatures and the palinspastic restoration of peripheral orogens: example from the Neoproterozoic Avalonian-Cadomian belt. Geology, 22, 617-620.
66. NANCE, R.D., MURPHY, J.B. & KEPPIE, J.D. 2002. A Cordilleran model for the evolution of Avalonia. tectonophysics, 352, 11-31.
67. PEREIRA, Z., MEIRELES, C. & PEREIRA, E. 1999. Upper Devonian palynomorphs of the NE sector of Tras-os-Montes (Central Iberian Zone). In: gáMez vintAneD, J.A., eguíluz, L. & PAlAcius, T. (eds) XV Reunión de Geología del Oeste Peninsular-International Meeting on Cadomian Orogens, Badajoz, Spain, Extended Abstracts. Diputacion de Badajoz, Badajoz, 201-206.
68. PIÇARRA, J.M., Gutiérrez-Marco, J.C., SÁ, A.A., MEIRELES, C. & GONZÁLEZ CLAVIJO, E. 2006. Silurian graptolite biostratigraphy of the Galicia-Tras-os- Montes Zone (Spain and Portugal). GFF, 128, 185-188.
69. PIN, C., PAQUETTE, J.L., ABALOS, B., SANTOS, F.J. & GIL IBARGUCHI, J.I. 2006. Composite origin of an early Variscan transported suture: ophiolitic units of the Morais Nappe Complex (north Portugal). tectonics, 25, TC5001, doi:10.1029/2006tc001971.
70. RIBEIRO, A., PEREIRA, E. & DIAS, R. 1990. 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.
71. RODRIGUES, J., PEREIRA, E. & RIBEIRO, A. 2006. Estrutura interna do Complexo de Mantos Parautoctones, sector de Murca-Mirandela (NE de Portugal). In: DiAs, R., ArAúJo, A., terrinhA, P. & Kullberg, C. (eds) Geologia de Portugal no contexto da Ibéria. Universidade de evora, evora, 63-84.
72. RODRÍGUEZ, R., MARCOS, A. & FARIAS, P. 2004. Palynological data on the age of the meta-sediments of the 'Schistose Domain' in the Cabo ortegal area (Galicia-Tras-os-Montes Zone). Neues Jahrbuch für Geologie und Paläontologie, 4, 214-232.
73. Sánchez-García, T., BELLIDO, F., PEREIRA, M.F., CHICHORRO, M., QUESADA, C., PIN, C. & SILVA, J.B. 2010. Rift-related volcanism predating the birth of the Rheic ocean (ossa-Morena zone, SW Iberia). Gondwana Research, 17, 392-407.
74. SÁNCHEZ MARTÍNEZ, S., ARENAS, R., DÍAZ GARCÍA, F., MARTÍNEZ CATALÁN, J.R., GÓMEZ BARREIRO, J. & PEARCE, J.A. 2007. Careon ophiolite, NW Spain: Suprasubduction zone setting for the youngest Rheic ocean floor. Geology, 35, 53-56.
75. SÁNCHEZ MARTÍNEZ, S., ARENAS, R., GERDES, A., CASTIÑEIRAS, P., GÓMEZ BARREIRO, J., POTREL, A. & FERNÁNDEZ-SUÁREZ, J. 2011. Isotope geochemistry and revised geochronology of the Purrido ophiolite (Cabo ortegal Complex, NW Iberian Massif): Devonian magmatism with mixed sources and involved Mesoproterozoic basement. Journal of the Geological Society, London, 168, 733-750.
76. SARMIENTO, G.N., PIÇARRA, J.M., REBELO, J.A., ROBARDET, M., Gutiérrez-Marco, J.C., STORCH, P. & RÁBANO, I. 1999. Le silurien du synclinoriumde Moncorvo (NE du Portugal): Biostratigraphie et importance paleogeographique. Geobios, 32, 749-767.
77. SIRCOMBE, K.N. 2004. AgeDisPlAy: an ExCEL workbook to evaluate and display univariate geochronological data using binned frequency histograms and probability density distributions. Computers and Geosciences, 30, 21-31.
78. SLÁMA, J., KOŠLER, J., et al. 2008. Plešovice zircon-a new natural reference material for U-Pb and Hf isotopic microanalysis. Chemical Geology, 249, 1-35.
79. STACEY, J.S. & KRAMERS, J.D. 1975. Approximation of terrestrial lead isotope evolution by a 2-stage model. Earth and Planetary Science Letters, 26, 207-221.
80. STERN, R., KRÖNER, A., BENDER, R., REISCHMANN, T. & DAWOUD, A. 1994. Precambrian basement around Wadi Halfa, Sudan: a new perspective on the evolution of the East Saharan Craton. Geologische Rundschau, 83, 564-577.
81. VALVERDE-VAQUERO, P., MARCOS, A., FARIAS, P. & GALLASTEGUI, G. 2005. U-Pb dating of ordovician felsic volcanism in the Schistose Domain of the Galicia-Tras-os-Montes Zone near Cabo ortegal (NW Spain). Geologica Acta, 3, 27-37.
82. VILLASECA, C., BELOUSOVA, E., OREJANA, D., CASTIÑEIRAS, P. & Pérez-Soba, C. 2011. Presence of Palaeoproterozoic and Archean components in the granulite- facies rocks of central Iberia: the Hf isotopic evidence. Precambrian Research, 187, 143-154.
83. VON RAUMER, J.F. & STAMPFLI, G.M. 2008. The birth of the Rheic ocean-early Palaeozoic subsidence patterns and subsequent tectonic plate scenarios. tectonophysics, 461, 9-20.
84. ZHU, W., ZHENG, B., et al. 2011. Neoproterozoic tectonic evolution of the Precambrian Aksu blueschist terrane, northwestern Tarim, China: insights from LA-ICP-MS zircon U-Pb ages and geochemical data. Precambrian Research, 185, 215-230.