Emplacement of the Aya Variscan granitic pluton (Basque Pyrenees) in a dextral transcurrent regime inferred from a combined magneto-structural and gravimetric study

Journal of the Geological Society

Volumn 156, Issue 5, 1999, Pages 991-1002

  Olivier, P ^a   Ameglio, L ^a   Richen, H ^a   Vadeboin, F ^b  

^a UNIVERSITÉ DE TOULOUSE   (France)

^b CEREGE   (France)

Author keywords

AMS; Aya granite; Gravity surveys; Pyrenees; Variscan orogeny

Indexed keywords

EMPLACEMENT; FOLIATION; HERCYNIAN OROGENY; PLUTON;

SPAIN;

EID: 0032701575     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/gsjgs.156.5.0991     Document Type: Article

References (39)

1. AMÉGLIO, L., VIGNERESSE, J.L. & BOUCHEZ, J.L. 1997. Granite pluton geometry and emplacement mode inferred from combined fabric and gravity data. In: BOUCHEZ, J.L., HUTTON, D.H.W. & STEPHENS, W.E. (eds) Granite: from segregation of melt to emplacement fabrics. Kluwer Academic Publishers, Dordrecht, 199-214.
2. _, _, DARROZES, J. & BOUCHEZ, J.L. 1994. Forme du massif granitique du Sidobre (Montagne Noire, France): sensibilité de l'inversion des données gravimétriques au contraste de densité. Comptes Rendus de l'Académie des Sciences, Paris, 319, II, 1183-1190.
3. ARANGUREN, A., TUBIA, J.M., BOUCHEZ, J.L. & VIGNERESSE, J.L. 1996. The Guitiriz granite, Variscan belt of Northern Spain: extension-controlled emplacement of magma during tectonic escape. Earth and Planetary Science Letters, 139, 165-176.
4. AUDRAIN, J., AMICE, M., VIGNERESSE, J.L. & BOUCHEZ, J.L. 1989. Gravimétrie et géométrie tri-dimensionelle du pluton granitique de Cabeza de Araya (Extrémadure, Espagne). Comptes Rendus de l'Académie des Sciences. Paris, 309, II, 1757-1764.
5. BAHER, R., DE CABISSOLE, B., CASAS, A., CORPEL, J. & DEBEGLIA, N. 1989. Carte gravimétrique des Pyrénées. BRGM edit., Orléans.
6. BORRADAILE, G.J. 1991. Correlation of strain with Anisotropy of Magnetic Susceptibility. Pageoph, 135, 15-29.
7. _ & HENRY, B. 1997. Tectonic applications of magnetic susceptibility and its anisotropy. Earth-Science Reviews, 42, 49-93.
8. BOUCHEZ, J.L. 1997. Granite is never isotropic: an introduction to AMS studies of granitic rocks. In: BOUCHEZ, J.L., HUTTON, D.H.W. & STEPHENS, W.E. (eds) Granite: from segregation of melt to emplacement fabrics. Kluwer Academic Publishers, Dordrecht, 95-112.
9. _, BERNIER, S., ROCHETTE, P. & GUINEBERTEAU, B. 1987. Log des susceptibilités magnétiques et anisotropies de susceptibilité dans le granite de Beauvoir: conséquences pour sa mise en place. Géologie de la France, 2-3, 223-232.
10. CORDELL, L. & HENDERSON, R.G. 1968. Iterative three dimensional solution of gravity anomaly using a digital computer. Geophysics, 33, 596-601.
11. DRUGUET, E. & HUTTON, D.H.W. 1998. Syntectonic anatexis and magmatism in a mid-crustal transpressional shear zone: an example from the Hercynian rocks of the eastern Pyrennes. Journal of Structural Geology, 20, 905-916.
12. EVANS, N.G., GLEIZES, G., LEBLANC, D. & BOUCHEZ, J.L. 1997. Hercynian tectonics in the Pyrenees: a new view based on structural observations around the Bassiès granite pluton. Journal of Structural Geology, 19, 2, 195-208.
13. GLEIZES, G. 1992. Structure des granites hercyniens des Pyrénées, Thesis, Univ. Toulouse.
14. _, LEBLANC, D. & BOUCHEZ, J.L. 1997. Variscan granites of the Pyrenees revisited: their role as syntectonic markers of the orogen. Terra Nova, 9, 38-41.
15. _, NÉDÉLEC, A., BOUCHEZ, J.L., AUTRAN, A. & ROCHETTE, P. 1993. Magnetic susceptibility of the Mont-Louis Andorra ilmenite-type granite (Pyrenees): a new tool for the petrographic characterization and regional mapping of zoned granite plutons. Journal of Geophysical Research, 98B, 4317-4331.
16. GUINEBERTEAU, B., BOUCHEZ, J.L. & VIGNERESSE, J.L. 1987. The Mortagne granite pluton (France) emplaced by pull-apart along a shear zone: structural and gravimetric arguments and regional implication. Geological Society of America Bulletin, 99, 763-770.
17. HENRY, B. & HROUDA, F. 1989. Analyse de la déformation finie des roches par détermination de leur anisotropie de susceptibilité magnétique. Comptes Rendus de l'Académie des Sciences, Paris, 308, II, 731-737.
18. JUCH, D. & SCHAFER, D. 1974. L'Hercynien de Maya et de la vallée d'Arizakun dans la partie orientale du massif de Cinco Villas (Pyrénées Occidentales d'Espagne). Pirineos, 111, 41-58.
19. LAUNEAU, P. & ROBIN, P.-Y.F. 1996. Fabric analysis using the intercept method. Tectonophysics, 267, 91-119.
20. LEBLANC, D., GLEIZES, G., ROUX, L. & BOUCHEZ, J.L. 1996. Variscan dextral transpression in the French Pyrenees: new data from the Pic des Trois-Seigneurs granodiorite and its country rocks. Tectonophysics, 261, 331-345.
21. MCNULTY, B.A. 1995. Pseudotachylyte generated in the semi-brittle and brittle regimes, Bench Canyon shear zone, central Sierra Nevada. Journal of Structural Geology, 17, 11, 1507-1521.
22. MORELLI, G., GANTER, C., HONKASALO, T., MC CONNEL, R.K., SZABO, B., TANNER, J.G., UOTILA, U. & WHALEN, C.T. 1974. The International Gravity Standardization Net, 1971. International Association of Geodesy, Paris, 194.
23. MORITZ, H. 1968. The Geodetic Reference System (1967). Allgemeine Vermessungs-Nachrichten, 2-7.
24. OLIVIER, PH., DE SAINT BLANQUAT, M., GLEIZES, G. & LEBLANC, D. 1997. Homogeneity of granite fabrics at the metre and dekametre scales. In: BOUCHEZ, J.L., HUTTON, D.H.W. & STEPHENS. W.E. (eds) Granite: from segregation of melt to emplacement fabrics. Kluwer Academic Publishers, Dordrecht, 95-112.
25. PAQUETTE, J.L., GLEIZES, G., LEBLANC, D. & BOUCHEZ, J.L. 1997. Le granite de Bassiès (Pyrénées): un pluton syntectonique d'âge Westphalien. Géochronologie U-Pb sur zircons. Comptes Rendus de l'Académie des Sciences, Paris, 324, IIa, 387-392.
26. PATERSON, S.R., VERNON, R.H. & TOBISCH, O.T. 1989. A review of criteria for the identification of magmatic and tectonic foliations in granitoids. Journal of Structural Geology, 11, 349-363.
27. PESQUERA, A. 1985. Contribucíon a la mineralogia, petrologia y metalogenia del macizo paleozoico de Cinco Villas (Pirineos vascos). Thesis, Univ. Bilbao.
28. _ & PONS, J. 1990. Le pluton hercynien de Aya (Pyrénées basques espagnoles). Structure, mise en place et incidences tectoniques régionales. Bulletin de la Société géologique de France, 8, VI (1), 13-21.
29. RICHTER, C., VAN DER PLUIJM, B.A. & HOUSEN, B.A. 1993. The quantification of crystallographic preferred orientation using magnetic anisotropy. Journal of Structural Geology, 15, 113-116.
30. ROCHETTE, P. 1987. Magnetic susceptibility of the rock matrix related to magnetic fabric studies. Journal of Structural Geology, 9, 1015-1020.
31. _, JACKSON, M. & AUBOURG, C. 1992. Rock magnetism and the interpretation of anisotropy of magnetic susceptibility. Reviews of Geophysics, 30, 3, 209-226.
32. _, SCAILLET, B., GUILLOT, S., LE FORT, P. & PECHER, A. 1994. Magnetic Properties of the High Himalayan Leucogranites: Structural Implications. Earth and Planetary Science Letters, 126, 217-234.
33. ROMER, R.L. & SOLER, A. 1995. U-Pb age and lead isotopic characterisation of Au-bearing skarn related to the Andorra granite (central Pyrenees, Spain). Mineralium Deposita, 30, 374-383.
34. SCHOTT, J.J. & PERES, A. 1988. Paleomagnetism of Permo-Triassic red beds in the western Pyrenees: evidence for strong clockwise rotations of the Paleozoic units. Tectonophysics, 156, 75-88.
35. SOULA, J.C. 1982. Characteristics and mode of emplacement of gneiss domes and plutonic domes in central-eastern Pyrenees. Journal of Structural Geology, 4, 313-342.
36. VAN DER VOO, R. & BOESSENKOOL, A. 1973. Permian paleomagnetic result from the western Pyrenees delineating the plate boundary between the Iberian Peninsula and stable Europe. Journal of Geophysical Research, 78, 5118-5127.
37. VIGNERESSE, J.L. 1990. Use and misuse of geophysical data to determine the shape at depth of granitic intrusions. Geological Journal, 25, 248-260.
38. _ 1995. Control of granite emplacement by regional deformation. Tectonophysics, 249, 173-186.
39. _ & CANNAT, M. 1987. Mesure des paramètres physiques dans le sondage d'Echassières (vitesse sismique, porosité, densité). Mémoire Géologie Profonde de la France 1. Géologie de la France, 2-3, 145-148.