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

Volumn 163, Issue 5, 2006, Pages 847-855

  Bea, F ^a   Montero, P G ^a   Gonzalez Lodeiro, F ^a   Talavera, C ^a   Molina, J F ^a   Scarrow, J H ^a   Whitehouse, M J ^b   Zinger, T ^c  

^a UNIVERSITY OF GRANADA   (Spain)

^b SWEDISH MUSEUM OF NATURAL HISTORY   (Sweden)

^c INSTITUTE OF PRECAMBRIAN GEOLOGY AND GEOCHRONOLOGY   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

DOME; GABBRO; HERCYNIAN OROGENY; ION MICROPROBE; MIGMATITE; URANIUM-LEAD DATING; ZIRCON;

EURASIA; EUROPE; IBERIAN PENINSULA; SOUTHERN EUROPE;

EID: 33748663790     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/0016-76492005-143     Document Type: Article

References (31)

1. 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.
2. Barbero, L. & Villaseca, C. 1989. Caracterización geoquímica de las rocas gabroideas de Toledo (región central del hercínico Ibérico). In: III Congresso Geoquimica de España, Soria. 1, 97-107.
3. Barbero, L. & Villaseca, C. 2004. El macizo de Toledo. In: Vera, J.A. (ed.) Geologia de España. SGE-IGME, Madrid, 110-115.
4. Bea, F. 2004. La naturaleza del magmatismo de la Zona Centro Ibérica: consideraciones generales y ensayo de correlación. In: Vera, J.A. (ed.) Geología de España. SGE-IGME, Madrid, 128-133.
5. Bea, F., Montero, P. & Molina, J.F. 1999. Mafic precursors, peraluminous granitoids, and late lamprophyres in the Avila batholith: a model for the generation of Variscan batholiths in Iberia. Journal of Geology, 107, 399-419.
6. Bea, F., Montero, P. & Zinger, T. 2003. The nature and origin of the granite source layer of Central Iberia: evidence from trace element, Sr and Nd isotopes, and zircon age patterns. Journal of Geology, 111, 579-595.
7. Bea, F., Montero, P. & Ortega, M. 2006a. A LA-ICPMS evaluation of Zr reservoirs in common crustal rocks. Implications for Zr and Hf geochemistry and zircon-forming processes. Canadian Mineralogist, 44, in press.
8. Bea, F., Montero, P., Talavera, C. & Zinger, T. 2006b. A revised age for the oldest magmatism of Central Iberia: U-Pb ion microprobe and LA-ICPMS dating of the Miranda do Douro orthogneiss. Geologica Acta, 4, in press.
9. Casquet, C. & Galindo, C. 2004. Magmatismo varisco y postvarisco en la Zona de Ossa Morena. In: Vera, J.A. (ed.) Geología de España. SGE-IGME, Madrid, 194-199.
10. Castro, Corretge, L.G., De La Rosa J.D., Fernandez, C., Lopez, S., Garcia-Moreno, O. & Chacon, H. 2003. The appinite-migmatite complex of Sanabria, NW Iberian massif, Spain. Journal of Petrology 44, 1309-1344.
11. Farias, P., Gallastegui, G. & González Lodeiro, F. et al. 1987. Aportaciones al conocimiento de la litoestratigrafia y estructura de Galicia Central. Memorias do Museu e Laboratoria de Mineralogia e Geologia Univ. Porto), 1, 411-431.
12. Franco González, M.P. & García De Figuerola, L.C. 1986. Las rocas básicas y ultrabásicas en el extremo occidental de la Sierra de Avila (Provincias de Avila y Salamanca). Studia Geologica Salmanticensis, 23, 193-219.
13. Govindaraju, K., Potts, P.J., Webb, P.C. & Watson, J.S. 1994. 1994 Report on Whin Sill Dolerite WS-E from England and Pitscurrie Micrograbbro PM-S from Scotland: assessment by one hundred and four international laboratories. Geostandards Newsletter, 28, 211-300.
14. López-Moro, F.J. & López-Plaza, M. 2004. Monzonitic series from the Variscan Tormes Dome (Central Iberian Zone): petrogenetic evolution from monzogabbro to granite magmas. Lithos, 72, 19-44.
15. Lowery, L.E., Miller, C., Walker, B., Wooden, J.L., Mazdab, F.K. & Bea, F. 2006. Zircon, Zr/Hf ratios, and magmatic fractionation of Earth's crust: an example from the Spirit Mountain batholith, Nevada. Mineralogical Magazine, in press.
16. 144Nd ratios by inductively-coupled-plasma mass spectrometry in isotope geoscience: an alternative to isotope dilution analysis. Analytica Chimica Acta, 358, 227-233.
17. 206Pb en cristal único de circón de las rocas máficas y ultramáficas del sector de Gredos, Batolito de Avila (Iberia Central). Revista de la Sociedad Geologica de España, 17, 157-165.
18. Montero, P., Bea, F., Zinger, T.F., Scarrow, J.H., Molina, J.F. & Whitehouse, M.J. 2004b. 55 million years of continuous anatexis in Central Iberia: single zircon dating of the Peña Negra Complex. Journal of the Geological Society, London, 161, 255-264.
19. Pearce, N.J.G., Perkins, W.T., Westgate, J.A., Gorton, M.P., Jackson, S.E., Neal, C.R. & Chenery S.P. 1997. A compilation of new and published major and trace element data for NIST SRM 610 and NIST SRM 612 glass reference materials. Geostandards Newsletter, 21, 115-144.
20. Pereira, M.D., Ronkin, Y. & Bea, F. 1992. Dataciones Rb/Sr en el Complejo Anatéctico de la Peña Negra (Batolito de Avila, España Central): evidencias de magmatismo pre-hercínico. Revista de la Sociedad Geologica de España, 5, 129-134.
21. Pérez-Estaún, A. & Bea, F. 2004. Macizo Ibérico. In: Vera, J.A. (ed.) Geología de España. SGE-IGME, Madrid, 19-230.
22. Pinarelli, L. & Rottura, A. 1995. Sr and Nd isotopic study and Rb-Sr geochronology of the Bejar Granites, Iberian Massif, Spain. European Journal of Mineralogy, 7, 577-589.
23. Simancas, J.F., Carbonell, R., F., Gonzalez-Lodeiro, F., et al. 2003. The crustal structure of the transpressional Variscan Orogen of SW Iberia: the IBERSEIS Deep Seismic Reflection Profile. Tectonics, 22, 1062, doi:1010.1029/2002TC001479.
24. Stacey, J.S. & Kramers, J.D. 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26, 207-221.
25. Steiger, R.H. & Jäger, E. 1977. Subcommission on Geochronology. Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, 36, 359-362.
26. Stuwe, K. 1995. Thermal buffering effects at the solidus. Implications for the equilibration of partially melted metamorphic rocks. Tectonophysics, 248, 39-51.
27. Watson, E.B. 1996. Dissolution, growth and survival of zircons during crustal fusion: kinetic principles, geological models and implications for isotopic inheritance. Transactions of the Royal Society of Edinburgh, Earth Sciences, 87, 43-56.
28. Watson, E.B. & Harrison, T.M. 2005. Zircon thermometer reveals minimum melting conditions on earliest Earth. Science, 308, 841-844.
29. Whitehouse, M.J., Kamber, B.S. & Moorbath, S. 1999. Age significance of U-Th-Pb zircon data from early Archaean rocks of west Greenland - a reassessment based on combined ion-microprobe and imaging studies. Chemical Geology, 160, 201-224.
30. Wiedenbeck, M., Allé, P. & Corfu, F. et al. 1995. Three natural zircon standards for U-Th-Pb, Lu-Hf trace element and REE analysis. Geostandards Newsletter, 19, 1-23.
31. York, D. 1969. Least squares fitting of a straight line with correlated errors. Earth and Planetary Science Letters, 5, 320-324.