Geochronology and geochemistry of Ordovician felsic volcanism in the Southern Armorican Massif (Variscan belt, France): Implications for the breakup of Gondwana

Gondwana Research

Volumn 21, Issue 4, 2012, Pages 1019-1036

  Ballevre M ^a   Fourcade, S ^a   Capdevila, R ^b   Peucat, J J ^a   Cocherie, A ^c   Fanning, C Mark ^d  

^a UNIVERSITÉ DE RENNES 1   (France)

^b Open University   (France)

^c BRGM   (France)

^d AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

Ollo de Sapo; Ordovician; Porphyritic felsic volcanics; Porphyroid Nappe; Variscan belt; Zircon geochronology

Indexed keywords

EID: 84858615653     PISSN: 1342937X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.gr.2011.07.030     Document Type: Article

References (145)

1. Abati J., Dunning G.R., Arenas R., Díaz García F., González Cuadra P., Martínez Catalán J.R., Andoneagui P. Early Ordovician orogenic event in Galicia (NW Spain): evidence from U-Pb ages in the uppermost unit in the Ordenes Complex. Earth and Planetary Science Letters 1999, 165:213-228.
2. Abati J., Castiñeiras P., Arenas R., Fernández-Suárez J., Gómez Barreiro J., Wooden J.L. Using SHRIMP zircon dating to unravel tectonothermal events in arc environments. The early Palaeozoic arc of NW Iberia revisited. Terra Nova 2007, 19:432-439.
3. Abati J., Gerdes A., Fernández Suárez J., Arenas R., Whitehouse M.J., Díez Fernández R. 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 2010, 122:219-235.
4. Arenas R., Rubio Pascual F.J., Díaz García F., Martínez Catalán J.R. 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 1995, 13:141-164.
5. Arenas R., Martínez Catalán J.R., Sánchez Martínez S., Fernández-Suárez J., Andoneagui P., Pearce J.A., Corfu F. The Vila de Cruces ophiolite: a remnant of the early Rheic Ocean in the Variscan suture of Galicia (Northwest Iberian Massif). Journal of Geology 2007, 115:129-148.
6. Audren, C., Jégouzo, P., 1975. 1/50,000-scale geological map "La Roche-Bernard", N° 449, BRGM Ed., Orléans, France.
7. Audren, C., Plaine, J., 1982. Geological Map of France at 1:50,000 scale, Belle-Ile-en-Mer, Houat, Hoedic Sheet (477), BRGM Orléans, 38 pp.
8. Auvray B., Charlot R., Vidal P. Données nouvelles sur le Protérozoïque inférieur du domaine nord-armoricain (France): âge et signification. Canadian Journal of Earth Sciences 1980, 17:532-538.
9. Auvray B., Macé J., Vidal P., van der Voo R. Rb-Sr dating of the Plouézec volcanics, N. Brittany: implications for the age of the red beds ("Séries rouges") in the northern Armorican Massif. Journal of the Geological Society of London 1980, 137:207-210.
10. Ballèvre M., Capdevila R., Guerrot C., Peucat J.-J. Discovery of an alkaline orthogneiss in the eclogite-bearing Cellier Unit (Champtoceaux complex, Armorican Massif): a new witness of the Ordovician rifting. Comptes Rendus Geoscience 2002, 334:303-311.
11. Ballèvre M., Pitra P., Bohn M. Lawsonite growth in the epidote blueschists from the Ile de Groix (Armorican Massif, France): a potential barometer. Journal of Metamorphic Geology 2003, 21:723-735.
12. Ballèvre M., Bosse V., Ducassou C., Pitra P. Palaeozoic history of the Armorican Massif: Models for the tectonic evolution of the suture zones. Comptes Rendus Geoscience 2009, 341:174-201.
13. Bea F., Montero P., González Lodeiro F., Talavera C. Zircon inheritance reveals exceptionally fast crustal magma generation processes in Central Iberia during the Cambro-Ordovician. Journal of Petrology 2007, 48:2327-2339.
14. Bea F., Montero P., Talavera C., Abu Anbar M., Scarrow J.H., Molina J.F., Moreno J.A. The palaeogeographic position of Central Iberia in Gondwana during the Ordovician: evidence from zircon chronology and Nd isotopes. Terra Nova 2010, 22:341-346.
15. Béchennec, F., Chèvremont, P., Stussi, J.M. and Thiéblemont, D., 2008. Geological Map of France at 1:50,000 scale, Le Poiré-sur-Vie Sheet (561), BRGM Orléans, 180p. Explanatory notes: Béchennec F., Chèvremont P., Stussi J.M., Thiéblemont D., Cocherie A. and Roy C. (in French).
16. Beetsma J.J. The Late Proterozoic/Paleozoic and Hercynian crustal evolution of the Iberian Massif, N Portugal, as traced by geochemistry and Sr-Nd-Pb isotope systematics of pre-Hercynian terrigenous sediments and Hercynian granitoids. PhD, Vrije Universiteit 1995, 223 pp.
17. Berger, G., Elmi, S., Brouder, P. et al., 1989. Geological Map of France at 1:50,000 scale, Bessèges Sheet (888), BRGM Orléans, 180p. Explanatory notes: Elmi S., Brouder, P., Berger, G., et al. (in French).
18. Bernard-Griffiths J., Carpenter M.S.N., Peucat J.-J., Jahn B.-M. Geochemical and isotopic characteristics of blueschist facies rocks from the Ile de Groix, Armorican Massif (northwest France). Lithos 1986, 19:235-253.
19. Bitri A., Ballèvre M., Brun J.-P., Chantraine J., Gapais D., Guennoc P., Gumiaux C., Truffert C. Imagerie sismique de la zone de collision hercynienne dans le μSud-Est du Massif armoricain (projet Armor2/programme Géofrance 3D). Comptes Rendus Geoscience 2003, 335:969-979.
20. Bitri A., Brun J.-P., Gapais D., Cagnard F., Gumiaux C., Chantraine J., Martelet G., Truffert C. Deep reflection seismic imaging of the internal zone of the South Armorican Hercynian belt (western France) (Armor2/Geofrance 3D program). Comptes Rendus Geoscience 2010, 342:448-452.
21. Bonjour J.-L., Peucat J.-J., Chauvel J.-J., Paris F., Cornichet J. U-Pb zircon dating of the Early Paleozoic (Arenigian) transgression in Western Brittany (France): a new constraint for the Lower Paleozoic time-scale. Chemical Geology 1988, 72:329-336.
22. Bosse V., Ballèvre M., Vidal O. Ductile thrusting recorded by the garnet isograd from blueschist-facies metapelites of the Ile de Groix, Armorican Massif, France. Journal of Petrology 2002, 43:485-510.
23. 39Ar ages in the blueschists from the Ile-de-Groix (Armorican Massif, France): implications for closure temperatures. Chemical Geology 2005, 220:21-45.
24. Bosse V., Godard G., Shea T., Paquette J.-L. Datations des évènements polymétamorphiques: intérêts majeurs de l'analyse in situ par ablation laser dans la monazite (Complexe des Essarts, Vendée). RST XXIII, Bordeaux 2010, 34-35. (abstract).
25. Bouton, P., Branger, P., 2007. Explanatory notes of geological Map of France at 1:50,000 scale, Coulonges-sur-l'Autize Sheet (587), BRGM Orléans, 134p. (in French).
26. Boyer C., Guillot P.-L. Les porphyroïdes de Génis, complexe d'ignimbrites rhyolitiques dans la série cristallophyllienne du Bas-Limousin. Bulletin du Bureau de Recherches Géologiques et Minières (II) 1973, 4:215-225.
27. Boyer C. Volcanismes acides paléozoïques dans le Massif Armoricain 1974, Thesis Univ, Paris Sud-Orsay, 384 pp.
28. Brouder P. Un document sur la limite Cambrien-Antécambrien dans les Cévennes: les gneiss de Peyroles. Comptes-Rendus de l'Académie des Sciences de Paris 1973, D-276:2617-2620.
29. Brown W.L., Parsons L. Feldspars in igneous rocks. Feldspars and Their Reactions 1994, 449-499. Kluwer Academic, Netherlands. I. Parsons (Ed.).
30. Brown M., Dallmeyer R.D. Rapid Variscan exhumation and the role of magma in core complex formation: southern Brittany metamorphic belt, France. Journal of Metamorphic Geology 1996, 14:361-379.
31. Brun J.-P., Burg J.-P. Combined thrusting and wrenching in the Ibero-Armorican arc : a corner effect during continental collision. Earth and Planetary Science Letters 1982, 61:319-332.
32. Brun J.-P., Ballard J.-F., Le Corre C. Identification of Ordovician block-tilting in the Hercynian fold-belt of Central Brittany (France): field evidence and computer models. Journal of Structural Geology 1991, 13:419-429.
33. Burg J.-P. Tectonique tangentielle hercynienne en Vendée littorale: Signification des linéations d'étirement E-W dans les porphyroïdes à foliation horizontale. Comptes-Rendus de l'Académie des Sciences de Paris 1981, II-293:849-854.
34. Cagnard F., Gapais D., Brun J.-P., Gumiaux C., van Den Driessche J. Late pervasive crustal-scale extension in the south Armorican Hercynian belt. Journal of Structural Geology 2004, 26:435-449.
35. Cannat M., Bouchez J.-L. Linéations N-S et E-W en Vendée littorale (Massif armoricain). Episodes tangentiels successifs éohercyniens en France occidentale. Bulletin de la Societe Geologique de France 1986, II(8):299-310.
36. Carmichael I.S.F., Turner F.J., Verhoogen J. Igneous and Metamorphic Petrology 1974, McGraw Hill, New-York.
37. Caron C., Lancelot J. Datation U-Pb et Rb-Sr à 390Ma de l'orthogneiss de Peyrolles (Cévennes, Massif central). Implications géodynamiques. Comptes-Rendus de l'Académie des Sciences de Paris 1996, IIa-323:305-312.
38. Carrilho Lopes, J., Munhá, J., Pin, C., Mata, J., 2008. Magamtic sources of the Alter do Chão-Alter Pedroso bimodal plutonic complex (Ossa-Morena zone, SW Iberia). International Geological Congress, Oslo, MPI-O1 (abstract).
39. Castro A., Patiño Douce A.E., Corretge L.G., de la Rosa J.D., El-Biad M., El-Hmidi H. Origin of peraluminous granites and granordiorites, Iberian Massif, Spain: an experimental test of granite petrogenesis. Contributions to Mineralogy and Petrology 1999, 135:255-276.
40. Castro A., Corretge L.G., de la Rosa J.D., Fernández C., López S., García-Moreno O., Chacón H. The appinite-migmatite complex of Sanabria, NW Iberian Massif, Spain. Journal of Petrology 2003, 44:1309-1344.
41. Chantraine J., Egal E., Thiéblemont D., Le Goff E., Guerrot C., Ballèvre M., Guennoc P. The Cadomian active margin (North Armorican Massif, France): a segment of the North Atlantic Panafrican belt. Tectonophysics 2001, 331:1-18.
42. Chichorro M., Pereira M.F., Díaz-Azpiroz M., Williams I.S., Fernández C., Pin C., Silva J.B. Cambrian ensialic rift-related magmatism in the Ossa-Morena Zone (Evora-Aracena metamorphic belt, SW Iberian Massif): Sm-Nd isotopes and SHRIMP zircon U-Th-Pb geochronology. Tectonophysics 2008, 461:91-113.
43. Cogné J., Wright A.E. L'orogène cadomien - vers un essai d'interprétation paléogéodynamique unitaire des phénomènes orogéniques fini-précambriens d'Europe moyenne et occidentale et leur signification à l'origine de la croûte et du mobilisme varisque puis alpin. 26th International Congress (Paris), Coll. C6 1980, 29-55.
44. Colchen M., Poncet D. Sur l'âge post-Tournaisien de la tectonique hercynienne synschisteuse à Brétignolles-sur-Mer, Vendée Littorale, Massif armoricain. Comptes-Rendus de l'Académie des Sciences de Paris 1987, II-305:1255-1258.
45. Collomb P. Etude géologique du Rouergue cristallin 1970, Mémoires de la Carte Géologique de la France, Imprimerie Nationale, Paris.
46. Comble C., de Wever P., Ters M., Weyant M. Découverte de Conodontes et de Radiolaires d'âge Tournaisien dans les schistes bariolés de Brétignolles-sur-Mer (Vendée). Comptes-Rendus de l'Académie des Sciences de Paris 1985, c300:899-904.
47. Compston W., Williams I.S., Kirschvink J.L., Zhang Z., Ma G. Zircon U-Pb ages for early Cambrian time scale. Journal of the Geological Society of London 1992, 149:171-184.
48. Cordani U.G., Nutman A.P., Andrade A.S., Santos J.F., Do Rosário Azevedo M., Mendes M.H., Pinto M.S. New U-Pb SHRIMP zircon ages for pre-Variscan orthogneisses from Protugal and their bearing on the tectonic evolution of the Ossa-Morena Tectonic Zone. Anais da Academia Brasileira de Ciências 2006, 78:133-149.
49. Dabard M.-P., Loi A., Peucat J.-J. Zircon typology combined with Sm-Nd whole-rock isotope analysis to study Brioverian sediments from the Armorican Massif. Sedimentary Geology 1996, 88:283-299.
50. Dabard M.-P., Loi A., Paris F. Relationship between phosphogenesis and sequence architecture: sequence stratigraphy and biostrtigraphy in the Middle Ordovician of the Armorican Massif (NW France). Palaeogeography, Palaeoclimatology, Palaeoecology 2007, 248:309-356.
51. Delbos L., Lasserre M., Roques M. Géochronologie et rétromorphose dans la série cristallophyllienne du Rouergue (Massif central français). Sciences de la Terre 1964, X:329-342.
52. DePaolo D.J. Neodymium isotope geochemistry, an introduction. Mineral and Rocks 1988, vol. 20. Springer Verlag, Berlin, Heidelberg.
53. Díez Fernández R., Martínez Catalán J.R. 3D analysis of an Ordovician igneous ensemble: a complex magmatic structure hidden in a polydeformed allochthonous Variscan unit. Journal of Structural Geology 2009, 31:222-236.
54. Díez Fernández R., Martínez Catalán J.R., Gerdes A., Abati J., Arenas R., Fernández-Suárez J. 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 2010, 18:385-399.
55. Díez Montes A. La geologia del Dominio "Ollo de Sapo" en las Comarcas de Sanabria y Terra de Bolo. Nova Terra 2007, 34:1-494.
56. Díez Montes A., Martínez Catalán J.R., Bellido Mulas F. Role of the Ollo de Sapo massive felsic volcanism of NW Iberia in the Early Ordovician dynamics of northern Gondwana. Gondwana Research 2010, 17:363-376.
57. D'Lemos R.D., Brown M. Sm-Nd isotope characteristics of Late Cadomain granite magmatism in northern France and the Channel Islands. Geological Magazine 1993, 130:797-804.
58. Ducassou C. Age et origine des premiers reliefs de la chaîne hercynienne: Le Dévono-Carbonifère du Bassin d'Ancenis. Mémoires de Géosciences Rennes 2010, vol. 135. 513 pp.
59. Ducassou C., Ballèvre M., Lardeux H., Robin C. Evidence for pre-orogenic, Early Devonian rifting in the Variscan belt: stratigraphy and structure of the Palaeozoic cover of the Mauges Unit (Upper Allochthon, Armorican massif, France). International Journal of Earth Sciences 2011, 10.1007/s00531-010-0605-3.
60. Durand J. Le Grès Armoricain. Sédimentologie, traces fossiles, milieux de dépôt. Mémoires du Centre Armoricain d'Etude Structurale des Socles 1985, 3:1-189.
61. Duthou J.-L. Chronologie Rb-Sr et géochimie des granitoïdes d'un segment de la chaîne varisque. Relations avec le métamorphisme: le Nord Limousin, Massif central français. Annales de la Faculté des Sciences de l'Université de Clermont 1977, 63:1-294.
62. El Korh A. Geochemical fingerprints of devolatilization reactions in the high-pressure rocks of Ile de Groix, France. PhD. Terre et Environnement 2010, vol. 99. Université de Genève, 361 pp.
63. El Korh A., Schmidt S.T., Ulianov A., Potel S. Trace element partitioning in HP-LT metamorphic assemblages during subduction-related metamorphism, Ile de Groix, France: a detailed LA-ICPMS study. Journal of Petrology 2009, 50:1107-1148.
64. Floor P. Petrology of an aegirine-riebeckite gneiss-bearing part of the Hesperian Massif: The Galineiro and surrounding areas, Vigo, Spain. Leidse Geologische Mededelingen 1966, 36:1-203.
65. Galerne C., Caroff M., Rolet J., Le Gall B. Magma-sediment mingling in an Ordovician rift basin: The Plouérec-Plourivo half-graben, Armorican Massif, France. Journal of Volcanology and Geothermal Research 2006, 155:164-178.
66. Gapais D., Lagarde J.-L., Le Corre C., Audren C., Jegouzo P., Casas Sainz A., Van Den Driessche J. La zone de cisaillement de Quiberon : témoin d'extension de la chaîne varisque en Bretagne méridionale au Carbonifère. Comptes-Rendus de l'Académie des Sciences de Paris 1993, II-316:1123-1129.
67. Geoffroy L. Tectonique tardi-varisque en faille normales ductiles en Vendée Littorale, Massif armoricain. Comptes-Rendus de l'Académie des Sciences de Paris 1993, II-317:1237-1243.
68. The Geology of Spain 2002, Geological Society, London. W. Gibbons, T. Moreno (Eds.).
69. Gorton M.P., Schandl E.V. From continents to island arcs: a geochemical index of tectonic setting for arc-related and within-plate felsic to intermediate volcanic rocks. The Canadian Mineralogist 2000, 38:1065-1073.
70. Goujou, J.-C., 1992, Analyse pétro-structurale dans un avant-pays métamorphique: influence du plutonisme tardi orogénique varisque sur l'encaissant epi à mézozonal de Vendée. Documents du Bureau de Recherches Géologiques et Minières 216, 347 pp.
71. Guérangé-Lozes J., Burg J.-P. Les nappes varisques du sud-ouest du Massif central (cartes géologqiues et structurales à 1/250000 Montpellier et Aurillac). Géologie de la France 1990, 1990(3-4):71-106.
72. Guérangé-Lozes, J., Mouline, M.P., 1998. Geological Map of France at 1:50,000 scale, Carmaux Sheet (933), BRGM Orléans, 65p. Explanatory notes: Guérangé-Lozes, J., Mouline, M.P., David, A., Servelle, C. (in French).
73. Guerrot C., Peucat J.-J., Capdevila R., Dosso L. Archean protoliths within Early Proterozoic granulitic crust of the west European Hercynian belt: possible relics of the west African craton. Geology 1989, 17:241-244.
74. Gutiérrez-Alonso G., Fernández-Suárez J., Gutiérrez-Marco J.C., Corfu F., Murphy J.B., Suárez M. U-Pb depositional age for the upper Barrios Formation (Armorican Quartzite facies) in the Cantabrian zone of Iberia: implications for stratigraphic correlation and paleogography. Geological Society of America Special Paper 2007, 423:287-296.
75. Gutiérrez-Marco J.C., Aramburu C., Arbizu M., Bernardez E., Hacar Rodriguez M.P., Mendez-Bedia I., Montesinos Lopez R., Ràbano I., Truyols J., Villas E. Revision bioestratigrafica de las pizzaras del Ordovico Medio en el noroeste de Espana (zones Cantabrica, Asturoccidental-Leonese y Centroiberica septentrional). Acta Geologica Hispanica 1999, 34:3-87.
76. Hughes C.J. Spilites, keratophyres and the igneous spectrum. Geological Magazine 1973, 109:513-527.
77. Iglésias M., Brun J.-P. Signification des variations et anomalies de la déformation dans un segment de la chaîne hercynienne (les séries cristallophylliennes de la Vendée littorale, Massif Armoricain). Bulletin de la Societe Geologique de France 1976, XVIII(7):1143-1452.
78. Jégouzo P. The South-Armorican Shear Zone. Journal of Structural Geology 1980, 2:39-47.
79. Jégouzo P., Peucat J.-J., Audren C. Caractérisation et signification géodynamique des orthogneiss calco-alcalins d'âge ordovicien de Bretagne méridionale. Bulletin de la Societe Geologique de France 1986, II(8):839-848.
80. Jones K.A., Brown M. High-temperature "clockwise" P-T paths and melting in the development of regional migmatites: an example from Southern Brittany, France. Journal of Metamorphic Geology 1990, 14:361-379.
81. Kretz R. Metamorphic Crystallization 1994, Wiley, New-York, 507 pp.
82. Le Hébel F., Fourcade S., Gapais D., Marignac C., Capdevila R., Martineau F. Fluid-assisted spreading of thickened continental crust: preliminary data from the Variscan Belt of South Brittany. Journal of Geochemical Exploration 2000, 69-70:561-564.
83. Le Hébel F., Vidal O., Kiénast J.R., Gapais D. Les «Porphyroïdes» de Bretagne méridionale : une unité de HP-BT dans la chaîne Hercynienne. Comptes Rendus Geoscience 2002, 334:205-211.
84. Le Hébel F., Gapais D., Fourcade S., Capdevila R. Fluid-assisted large strains in a crustal-scale décollement (Hercynian belt of South Brittany, France). Geological Society of London Special Publication 2002, vol. 200:85-101. S. De Meer, M.S. Drury, J.H.P. De Bresser, G.M. Pennock (Eds.).
85. Le Hébel F., Fourcade S., Boiron M.-C., Cathelineau M., Capdevila R., Gapais D. Fluid history during deep burial and exhumation of oil-bearing volcanics, Hercynian belt of southern Brittany, France. American Journal of Science 2007, 307:1096-1126.
86. Ludwig K.R. SQUID 1.02, A User's Manual. Special Publication 2001, vol. 2. Berkeley Geochronology Center.
87. Ludwig K.R. Isoplot/EX, version 3. A geochronological toolkit for Microsoft Excel. Special Publication 2003, vol. 4. Berkeley Geochronology Center, 70 pp.
88. Martínez Catalán J.R., Arenas R., Díaz García F., Abati J. Variscan accretionnary complex of northwest Iberia: terrane correlation and succession of tectonothermal events. Geology 1997, 25:1103-1106.
89. Martínez Catalán J.R., Arenas R., Díaz García F., González Cuadra P., Gómez Barreiro J., Abati J., Castiñeiras P., Fernández-Suárez S., Sánchez-Martínez S., Andonaegui P., González Clavijo E., Díez Montes A., Rubio Pascual F.J., Valle Aguado B. Space and time in the tectonic evolution of the northwestern Iberian Massif. Implications for the Variscan belt. Geological Society of America Memoirs 2007, 200:403-423.
90. McDougall N., Brenchley P.J., Rebelo J.A., Romano M. Fans and fan deltas - precursors to the Armorican quartzite (Ordovician) in western Iberia. Geological Magazine 1987, 124:347-359.
91. Merino-Tomé O.A., Bahamonde J.R., Colmenero J.R., Heredia N., Villa E., Farias P. Emplacement of the Cuera and Picos de Europa imbricate system at the core of the Iberian-Armorican arc (Cantabrian zone, north Spain): new precisions concerning the timing of arc closure. Geological Society of America Bulletin 2009, 121:729-751.
92. Melleton J., Cocherie A., Faure M., Rossi P. Precambrian protoliths and early Paleozoic magmatism in the French Massif Central: U-Pb data and the North Gondwana connection in the west European Variscan belt. Gondwana Research 2010, 17:13-25.
93. Michard A., Gurriet P., Soudant M., Albarède F. Nd isotopes in French Phanerozoic shales: external vs. internal aspects of crustal evolution. Geochimica Cosmochimica Acta 1985, 49:601-610.
94. Montero P., Bea F., Gonzales-Lodeiro F., Talavera C.M., Whitehouse J. Zircon ages of the metavolcanic rocks and metagranites of the Ollo de Sapo Domain in central Spain: Implications for the Neoproterozoic to Early Paleozoic evolution of Iberia. Geological Magazine 2007, 144:963-976.
95. Montero P., Talavera C.M., Bea F., Lodeiro F.G., Whitehouse M.J. Zircon geochronology of the Ollo de Sapo Formation and the age of the Cambro-Ordovician rifting in Iberia. Journal of Geology 2009, 117:174-191.
96. Montero P., Bea F., Corretgé L.G., Floor P., Whitehouse M.J. U-Pb ion microprobe dating and Sr and Nd isotope geology of the Galiñero igneous complex. A model for the peraluminous/peralkaline duality of the Cambro-Ordovician magmatism of Iberia. Lithos 2009, 107:227-238.
97. Murphy J.B., Gutiérrez-Alonso G., Fernández-Suárez J., Braid J.A. Probing crustal and mantle lithosphere origin through Ordovician volcanic rocks along the Iberian passive margin of Gondwana. Tectonophysics 2008, 461:166-180.
98. Nance R.D., Murphy J.B. Contrasting basement isotopic signatures and the palinspastic restoration of peripheral orogens: example from the Neoproetrozoic Avalonian-Cadomain belt. Geology 1994, 22:617-620.
99. Nance R.D., Linnemann U. The Rheic Ocean: Origin, evolution and significance. GSA Today 2008, 18(12):4-12.
100. Nance R.D., Gutiérrez-Alonso G., Keppie J.D., Linnemann U., Murphy J.B., Quesada C., Strachan R.A., Woodcock N.H. Evolution of the Rheic Ocean. Gondwana Research 2010, 17:194-222.
101. Ordóñez Casado B., Gebauer D., Schäfer H.J., Ibarguchi J.I., Peucat J.-J. A single Devonian subduction event for the HP/HT metamorphism of Cabo Ortegal Complex within the Iberian Massif. Tectonophysics 2001, 332:359-385.
102. Paces J.B., Miller J.D. Precise U-Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota. Geochronological insights to physical, petrogenetic, paleomagnetic, and tectonomagmatic processes associated with the 1.1Ga Midcontinent Rift System. Journal of Geophysical Research 1993, 38:13997-14013.
103. Paquette, J.-L., 1987. Comportement des sytèmes isotopiques U-Pb et Sm-Nd dans le métamorphisme éclogitique. Chaîne hercynienne et chaîne alpine. Documents du Centre Armoricain d'Etude Structurale des Socles 14, 189pp.
104. Parga Pondal I., Matte P., Capdevila R. Introduction à la géologie de l'Ollo de Sapo, formation porphyroïde antésilurienne du nord-ouest de l'Espagne. Notas y Comunicaciones del Instituto Geológico y Minero de España 1964, 76:119-154.
105. Peucat J.J., Paris F., Chalet M. U-Pb zircon dating of volcanic rocks, close to the Silurian-Devonian boundary, from Vendée (western France). Chemical Geology (Isotope Geoscience Section) 1986, 59:133-142.
106. Pearce J.A., Parkinson I.J. Trace element models for mantle melting: application to volcanic arc petrogenesis. Magmatic Processes and Plate Tectonics, Geological Society Special Publication 1993, 373-403. H.M. Prichard, T. Alabaster, N.B.W. Harris, C.R. Neary (Eds.).
107. Péneau J. Recherches stratigraphiques et paléontologiques dans le sud-Est du Massif armoricain (Synclinal de Saint-Julien-de-Vouvantes). Bulletin de la Société des Sciences Naturelles de l'Ouest de la France 1929, VIII(4):1-300.
108. Pin C., Ortega-Cuesta L.A., Gil Ibarguchi J.I. Mantle-derived, early Paleozoic A-type metagranitoids from the NW Iberian massif: Nd isotope and trace-element constraints. Bulletin de la Societe Geologique de France 1992, 163:483-494.
109. Piton P. Etude géochimique et géochronologique de la croûte continentale protérozoïque (1.8-2.2Ga) au Nord du Massif armoricain 1985, DEA, Univ., Rennes, 51pp.
110. Pitra P., Boulvais P., Antonoff V., Diot H. Wagnerite in a cordierite-gedrite gneiss: Witness of long-term fluid-rock interaction in the continental crust (Ile d'Yeu, Armorican Massif, France). American Mineralogist 2008, 93:315-326.
111. Pitra P., Ballèvre M., Ruffet G. Inverted metamorphic field gradient towards a Variscan suture zone (Champtoceaux Complex, Armorican Massif, France). Journal of Metamorphic Geology 2010, 28:183-208.
112. Pupin J.-P. Zircon and granite petrology. Contributions to Mineralogy and Petrology 1980, 73:207-220.
113. Ribeiro M.L. Petrogenesis of early paleozoic peralkaline rhyolites from the Macedo de Cavaleiros region (NE Portugal). Geologische Rundschau 1987, 76:147-168.
114. 39Ar ages during Variscan exhumation of a subducted crust (Malpica-Tui complex, NW Spain). Lithos 2003, 70:111-139.
115. Rodríguez J., Paquette J.-L., Gil Ibarguchi J.I. U-Pb dating of Lower Ordovician alkaline magmatism in the Gondwana margin (Malpica-Tui Complex, Iberian Massif): latest continental events before oceanic spreading. The Rootless Variscan Suture of NW Iberia (Galicia, Spain) 2007, 163-164. Publicaciones del Instituto Geológico y Minero de España, (abstract). R. Arenas, J.R. Martínez Catalán, J. Abati, S. Sánchez Martínez (Eds.).
116. Roger F., Matte P. Early Variscan HP metamorphism in the western Iberian Allochthon - a 390Ma U-Pb age for the Bragança eclogite (NW Portugal). International Journal of Earth Sciences 2005, 94:173-179.
117. Rolin P., Marquer D., Colchen M., Cartannaz C., Cocherie A., Thiéry V., Quenardel J.-M., Rossi P. Famenno-Carboniferous (370-320Ma) strike slipi tectonics monitored by syn-kinematic plutons in the French Variscan belt (Massif Armoricain and French Massif Central). Bulletin de la Societe Geologique de France 2009, 180:231-246.
118. Roques M. Les schistes cristallins de la partie sud-ouest du Massif central français 1941, Mémoires de la Carte Géologique de la France, Imprimerie Nationale, Paris.
119. Sabourdy, G., Vialette, Y., 1975. Age des gneiss de Peyrolles dans les Cévennes. Réunion annuelle des Sciences de la Terre, 3 (Montpellier), p. 331 (abstract).
120. Samson S.D., D'Lemos R. U-Pb geochronology and Sm-Nd isotopic composition of Proterozoic gneisses, Channel Islands, UK. Journal of the Geological Society of London 1998, 155:609-618.
121. Sánchez-García T., Quesada B., Bellido F., Dunning G.R., González del Tánago J. Two-step magma flooding of the upper crust during rifting: the Early Paleozoic of the Ossa Morena Zone (SW Iberia). Tectonophysics 2008, 461:72-90.
122. Santos Zalduegui J.F., Schärer U., Gil Ibarguchi I. Isotope constraints on the age and origin of magmatism and metamorphism in the Malpica-Tuy allochthon, Galicia, NW Spain. Chemical Geology 1995, 121:91-103.
123. Santos Zalduegui J.F., Schärer U., Gil Ibarguchi J.I., Girardeau J. Origin and evolution of the Paleozoic Cabo Ortegal ultramafic-mafic complex (NW Spain): U-Pb, Rb-Sr and Pb-Pb isotope data. Chemical Geology 1996, 129:281-304.
124. Shand S.J. Eruptive Rocks 1927, Thomas Murby and Co, London. first ed.
125. Simien F., Mattauer M., Allègre C.J. Nd isotopes in the stratigraphic record of the Montagne Noire (French Massif Central): no significant Paleozoic juvenile inputs, and pre-Hercynian paleogeography. Journal of Geology 1999, 107:87-97.
126. Solá A.R., Pereira M.F., Williams I.S., Ribeiro M.L., Neiva A.M.R., Montero P., Bea F., Zinger T. New insights from U-Pb zircon dating of Early Ordovician magmatism on the northern Gondwana margin: the Urra formation (SW Iberian Massif, Portugal). Tectonophysics 2008, 461:114-129.
127. Stampfli G., Borel G. A plate tectonic model for the Paleozoic and Mesozoic constrained by dynamic plate boundaries and restored synthetic oceanic isochrones. Earth and Science Planetary Letters 2002, 196:17-33.
128. Talbert J.-C., Vialette Y. Etude géochronologique du massif de Mareuil-sur-Lay (Vendée). Comptes-Rendus de l'Académie des Sciences de Paris 1972, D-274:2737-2739.
129. Taylor S.R., Gorton M.P. Geochemical application of spark source mass spectrography - III. Element sensititvity, precision and accuracy. Geochimica et Cosmochimica Acta 1977, 41:1375-1380.
130. Tera F., Wasserburg C.J. U-Th-Pb sytematics in three Apollo 14 basalts and the problem of initial lunar rocks. Earth and Panetary Sciences Letters 1972, 14:281-304.
131. Ters, M., 1972. 1/80,000-scale geological map "Palluau-Ile d'Yeu", no 129 (2nd édition) B.R.G.M. ed., Orléans, France.
132. Ters M. Les synclinoriums paléozoïques et le Précambrien sur la façade occidentale du Massif vendéen. Stratigraphie et structure. Bulletin du Bureau de Recherches Géologiques et Minières 1979, I-4:293-301.
133. Thiéblemont D., Guerrot C., Le Métour J., Jézéquel P. Le complexe de Cholet-Thouars: un ensemble volcano-plutonique cambrien moyen au sein du bloc précambrien des Mauges. Géologie de la France 2001, 2001(1-2):3-17.
134. Turrillot P., Augier R., Faure M. The top-to-the-southeast Sarzeau shear zone and its place in the late-orogenic extensional tectonics of southern Armorica. Bulletin de la Societe Geologique de France 2009, 180:247-261.
135. Valois J.P. Les formations métamorphiques de Penaran (presqu'ile de Guérande, Loire Atlantique) et leur minéralisation uranifère 1975, PhD, Univ, Nancy, 136 pp.
136. Valverde-Vaquero P., Dunning C.R. New U-Pb ages for the Early Ordovician magmatism in Central Spain. Journal of the Geological Society of London 2000, 157:15-26.
137. Valverde-Vaquero P., Marcos A., Farias P., Gallastegui G. 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 2005, 3:27-37.
138. Vauchez A., Maillet D., Sougy J. Strain and deformation mechanisms in the Variscan nappes of Vendée, South Brittany, France. Journal of Structural Geology 1987, 9:31-40.
139. Geología de España 2004, Instituto Geológico y Minero de España - Sociedad Geológico de España, Madrid-Salamanca. J.A. Vera (Ed.).
140. Videt B., Paris F., Rubino J.-L., Boumendjel K., Dabard M.-P., Loi A., Ghienne J.-F., Marante A., Gorini A. Biostratigraphical calibration of third order Ordovician sequences on the northern Gondwana platform. Palaeogeography, Palaeoclimatology, Palaeoecology 2010, 296:359-375.
141. Weill A.B., van der Voo R. The evolution of the paleomagnetic fold test as applied to complex geological situations, illustrated by a case study from northern Spain. Physics and Chemistry of the Earth 2002, 27:1223-1235.
142. Williams I.S. U-Th-Pb geochronology by ion microprobe. Reviews in Economic Geology 1998, 7:1-35. M.A. McKibben, W.C. Shanks, W.I. Ridley (Eds.).
143. Winchester J.A., Floyd P.A. Geochemical discrimination of different magma series and their differenciation products using immobile elements. Chemical Geology 1977, 20:325-343.
144. Wood D.A., Joron J.-L., Treuil M. A re-appraisal of the use of trace elements to classify and discriminate between magma series erupted in different tectonic settings. Earth and Planetary Science Letters 1979, 45:326-336.
145. Wood D.A. The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas on the British Tertiary Volcanic Province. Earth and Planetary Science Letters 1980, 50:11-30.