U–Pb zircon and monazite geochronology of post-collisional Hercynian granitoids from the Central Iberian Zone (Northern Portugal)

Bard, 1980, La chaı̂ne hercynienne d'Europe occidentale en termes de tectonique des plaques, Mém. BRGM, 108, 233 Beetsma, J.J., 1995. The Late Proterozoic/Paleozoic and Hercynian crustal evolution of the Iberian Massif, N. Portugal. PhD Thesis, Vrije Universiteit Amsterdam, 223 pp. Burg, 1994, Syn- to post-thickening extension: mode and consequences, C. R. Acad. Sci. Paris, 319, 1019 Debon, 1983, A chemical–mineralogical classification of common plutonic rocks and associations, Trans. R. Soc. Edinburgh, Earth Sciences, 73, 135, 10.1017/S0263593300010117 Dias, G., 1987. Mineralogia e petrologia de granitos Hercı́nicos associados a mineralizações filonianas de Sn–W, (Minho, Portugal). PhD Thesis, unpublished, Universidade do Minho, Portugal, 304 pp. Dias, 1985, Évolution tectonique, métamorphique et plutonique d'un secteur de la chaı̂ne hercynienne ibérique (Ponte de Lima, Nord du Portugal), Bull. Soc. Géol. France, 8, 423, 10.2113/gssgfbull.I.3.423 Dias, 1993, Cronologia e petrogénese de granitóides biotı́ticos tardi-hercı́nicos (Minho, Portugal). Estudo isotópico Rb–Sr e Sm–Nd, Publ. Mus. Lab. Min. Geol. Univ. Porto, 3, 369 Dias, 1994, The genesis of felsic–mafic plutonic associations: a Sr and Nd isotopic study of the Hercynian Braga Granitoid Massif (Northern Portugal), Lithos, 32, 207, 10.1016/0024-4937(94)90040-X Dias, 1992, Les granitoı̈des biotitiques syn- à tardi-hercyniens de la région de Braga (Nord Portugal). Typologie chimico–minéralogique et implications pétrogénétiques, C. R. Acad. Sci. Paris, 314, 675 Diez Balda, M.A., Vegas, R., Gonzalez Lodeiro, F., 1990. Structure of autochtonous sequences of Central Iberian Zone. In: Dallmeyer, R.D., Martı́nez, E. (Eds.), Pre-Mesozoic Geology of Iberia. Springer-Verlag, Berlin, Germany, pp. 172–188. Evensen, 1978, Rare-earth abundances in chondritic meteorites, Geochim. Cosmochim. Acta, 42, 1199, 10.1016/0016-7037(78)90114-X Ferreira, N., Iglesias, M., Noronha, F., Pereira, E., Ribeiro, A., Ribeiro, M.L., 1987a. Granitóides da Zona Centro Ibérica e seu enquadramento geodinâmico. In: Bea, F., Carnicero, A., Gonzalo, J.C., López Plaza, M., Rodriguez Alonso, M.D. (Eds.), Geologia de los Granitoides y Rocas Asociadas del Macizo Hespérico. Ed. Rueda, Madrid, pp. 37–51. Ferreira, 1987, Cronostratigrafia dos granitos da região de Moimenta da Beira–Tabuaço–Penedono, Publ. Mus. Lab. Min. Geol. Univ. Porto, 1, 287 Ferreira, 1993, Rochas ı́gneas hercı́nicas da região de Braga–Vieira do Minho (NW de Portugal): cartografia geológica, tipologia granı́tica e petrogénese, Publ. Mus. Lab. Min. Geol. Univ. Porto, 3, 45 Govindaraju, 1987, Fully automated dissolution and separation methods for inductively coupled plasma atomic emission spectrometry rock analysis. Application to the determination of rare earth elements, J. Anal. Atom. Spectrom., 2, 615, 10.1039/ja9870200615 Iglesias, 1981, Zones de cisaillement ductile dans l'arc ibéro-armoricain, Comun. Serv. Geol. de Portugal, 67, 85 Julivert, M., Fontboté, J., Ribeiro, A., Conde, L., 1974. Mapa tectónico de la Penı́nsula Ibérica y Baleares, escala 1/1,000,000. Inst. Geol. Min. España, 113 pp. Krogh, 1973, A low contamination method for the hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations, Geochim. Cosmochim. Acta, 37, 485, 10.1016/0016-7037(73)90213-5 Krogh, 1982, Improved accuracy of U–Pb zircon ages by the creation of more concordant systems using an air abrasion technique, Geochim. Cosmochim. Acta, 46, 637, 10.1016/0016-7037(82)90165-X Lagarde, 1992, Granites et collision continentale: l'exemple des granitoı̈des carbonifères dans la chaı̂ne hercynienne ouest-européenne, Bull. Soc. Géol. France, 163, 597 La Roche, 1980, Les granites à deux micas hercyniens français. Essai de cartographie et de corrélations géochimiques appuyés sur une banque de données. Implications pétrologiques et métallogéniques, Sci. Terre, Nancy, 24, 5 Lotze, 1945, Zur Gliederung der Varisziden der Iberischen Meseta, Geotekt. Forsch., 6, 78 Ludwig, K.R., 1987. Isoplot 200, a plotting and regression program for isotope geochemists, for use with HP series 200 computers. US Geol. Surv. Open File Rep., 45 pp. Martins, M.E.R., 1997. Geologia, petrologia e geoquı́mica dos granitóides hercı́nicos da região de Lamego (Norte de Portugal). PhD Thesis, unpublished, Universidade de Aveiro, Portugal, 287 pp. Matte, 1986, La chaı̂ne varisque parmi les chaı̂nes plaéozoı̈ques péri atlantiques, modèle d'évolution et position des grands blocs continentaux au Permo–Carbonifère, Bull. Soc. Géol. France, 2, 9, 10.2113/gssgfbull.II.1.9 Mendes, A.C., 1994. O maciço granı́tico de Peneda–Gerês: petrologia, mineralogia e geoquı́mica. Provas de APCC, unpublished, Universidade do Minho, Portugal, 157 pp. Mendes, 1996, Petrology and geochemistry of late-Hercynian subalkaline plutonism in the Central Iberian Zone: the Peneda–Gerês granitic massif, C. R. Acad. Sci. Paris, 323, 665 Mendes, A.C., Pupin, J.P., Dias, G., 1997. Petrogénese do maciço subalcalino de Peneda–Gerês (NW Penı́nsula Ibérica): evidências a partir da estrutura interna e geoquı́mica de elementos traço de zircões. X Semana de Geoquı́mica e IV Congresso de Geoquı́mica dos Paı́ses de Lı́ngua Portuguesa. Braga, Portugal, pp. 99–102. Montenegro de Andrade, M., Noronha, F., Rocha, A., 1986. Carta geológica de Guimarães (folha 9-B), escala 1/50,000. Serv. Geol. de Portugal, Lisboa. Nachit, 1985, Composition chimique des biotites et typologie magmatique des granitoı̈des, C. R. Acad. Sci. Paris, 301, 813 Neiva, 1993, Geoquı́mica de granitos e seus minerais da Serra do Gerês, Norte de Portugal, Publ. Mus. Lab. Min. Geol. Univ. Porto, 3, 137 Neiva, 1993, Geochemistry of granites and their minerals from Gerez mountain, Northern Portugal, Chem. Erde., 53, 227 Nemchin, 1994, Timing of late Archean granulite facies metamorphism in the southwestern Yilgarn Craton of Western Australia: evidence from U–Pb ages of zircons in mafic granulites, Precambr. Res., 68, 307, 10.1016/0301-9268(94)90035-3 Noronha, 1979, Essai de corrélation des phases de déformation hercynienne dans le Nord–Ouest Péninsulaire, Bol. Soc. Geol. Portugal, 21, 227 Parrish, R.R., Roddick, J.C., Loveridge, W.D., Sullivan, R.W., 1987. Uranium–lead analytical techniques at the Geochronology Laboratory, Geological Survey of Canada. Radiogenic Age and Isotopic Studies: Report 1. Geol. Surv. Canada, Paper 87-2, 3–7. Pereira, E. (coord.), 1992. Carta geológica de Portugal. Escala 1/200,000. Notı́cia Explicativa da Folha 1. Serv. Geol. de Portugal, Lisboa, 83 pp. Pereira, 1993, Cisalhamentos hercı́nicos e controlo das mineralizações de Sn–W, Au e U na Zona Centro-Ibérica, em Portugal, Cuad. Lab. Xeol. Laxe, 18, 89 Pinto, 1985, Escala geocronológica de granitóides portugueses ante-mesozóicos: uma proposta, Mems. Nots. Publ. Mus. Lab. Min. Geol. Univ. Coimbra, 99, 157 Pinto, M.S., Casquet, C., Ibarrola, E., Corretgé, L.G., Portugal Ferreira, M., 1987. Sı́ntese geocronológica dos granitóides do maciço hespérico. In: Bea, F., Carnicero, A., Gonzalo, J.C., López Plaza, M., Rodriguez Alonso, M.D. (Eds.), Geologia de los granitoides y rocas asociadas del Macizo Hespérico. Ed. Rueda, Madrid, pp. 69–86. Priem, 1984, Rb–Sr geochronology of Variscan granitoids in the tin–tungsten province of northern Portugal: a progress report, Terra Cognita, 4, 212 Pupin, 1980, Zircon and granite petrology, Contrib. Mineral. Petrol., 73, 207, 10.1007/BF00381441 Pupin, 1981, A propos des granites potassiques, C. R. Acad. Sci. Paris, 292, 405 Pupin, 1988, Granites as indicators in paleogeodynamics, Rend. Soc. Ital. Mineral. Petrol., 43, 237 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 Special Publication, 121, pp. 179–200. Ribeiro, 1974, Contribution à l'étude tectonique de Trás-os-Montes oriental, Mem. Serv. Geol. Portugal, 24, 168 Ribeiro, 1983, Modèle géodynamique des Hercynides Ibériques, Comun. Serv. Geol. Portugal, 69, 291 Ribeiro, A., Pereira, E., Dias, R., 1990a. Structure in the NW of the Iberian Peninsula. In: Dallmeyer, R.D., Martı́nez, E. (Eds.), Pre-Mesozoic Geology of Iberia. Springer-Verlag, Berlin, pp. 220–236. Ribeiro, A., Quesada, C., Dallmeyer, R.D., 1990b. Geodynamic evolution of the Iberian Massif. In: Dallmeyer, R.D., Martı́nez, E. (Eds.), Pre-Mesozoic Geology of Iberia. Springer-Verlag, Berlin, pp. 399–409. Rossi, 1987, Classification des associations magmatiques granitoı̈des, Géochronique, 21, 14 Simões, P.P., Dias, G., Leterrier, J., 1997a. Petrogénese de granitóides hercı́nicos biotı́ticos associados ao cisalhamento Vigo-Régua (Norte de Portugal). I Congresso Ibérico de Geoquı́mica e VII Congresso de Geoquı́mica de Espanha, Soria, Spain, pp. 528–534. Simões, P.P., Pupin, J.P., Dias, G., 1997b. Utilização do zircão como indicador genético e evolutivo em granitóides hercı́nicos biotı́ticos associados ao cisalhamento Vigo-Régua (Norte de Portugal). X Semana de Geoquı́mica e IV Congresso de Geoquı́mica dos Paı́ses de Lı́ngua Portuguesa. Braga, Portugal, pp. 147–150. Stacey, 1975, Approximation of terrestrial lead isotope evolution by a two-stage model, Earth Planet. Sci. Lett., 26, 207, 10.1016/0012-821X(75)90088-6 Steiger, 1977, Convention of the use of decay constants in geo- and cosmochronology, Earth Planet. Sci. Lett., 36, 359, 10.1016/0012-821X(77)90060-7