Oblique magmatic structures of two epizonal granite plutons, Hoggar, Algeria: Late-orogenic emplacement in a transcurrent orogen

Tectonophysics

Volumn 279, Issue 1-4, 1997, Pages 351-374

  Djouadi, M Toufik ^a   Gleizes, Gérard ^a   Ferré, Eric ^a,b   Bouchez, Jean Luc ^a   Caby, Renaud ^c   Lesquer, Alain ^c  

^a Environmental Research Observatory (ORE) HYBAM Centre IRD d'Ile de France   (France)

^b RHODES UNIVERSITY   (South Africa)

^c UNIV MONTPELLIER   (France)

Author keywords

Emplacement; Granite; Pan African; Hoggar; Plutonism; Structure

Indexed keywords

GRANITE; MAGNETIC ANISOTROPY; MICROSTRUCTURE; PAN AFRICAN OROGENY; PLUTON EMPLACEMENT;

ALGERIA, HOGGAR;

EID: 0031413153     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-1951(97)00123-6     Document Type: Article

References (51)

1. 2 on the Al-in-hornblende barometer. Am. Mineral. 80, 549-559.
2. Arbaret, L., 1995. Orientation préférentielle de forme dans les magmas: modélisation analogique 3D en cisaillement simple. Thesis, Univ. Clermont-Ferrand, 264 pp. (unpubl.).
3. Arbaret, L., Diot, H., Bouchez, J.L., 1996. Shape fabrics of particles in low concentration suspension: 2D analogue experiments and application to tiling in magma. J. Struct. Geol. 18 (7), 941-950.
4. Arbaret, L., Diot, H., Bouchez, J.L., Lespinasse, P., De Saint-Blanquat, M., 1997. Analogue 3D simple-shear experiments of magmatic biotite subfabrics. In: Bouchez, J.L., Stephens, W.E., Hutton, D.H.W. (Eds.), Granites: from Segregation of Melt to Emplacement Fabrics. Kluwer, Dordrecht, pp. 129-143.
5. Archanjo, C.J., Bouchez, J.L., Corsini, M., Vauchez, A., 1994. The Pombal granite pluton: magnetic fabric, emplacement and relationships with the Brasiliano strike-slip setting of NE Brazil (Paraíba State). J. Struct. Geol. 16, 323-335.
6. Archanjo, C.J., Launeau, P., Bouchez, J.L., 1995. Magnetic fabric vs. magnetite and biotite shape fabrics of the magnetite-bearing granite pluton of Gameleiras (Northeast Brazil). Phys. Earth Planet. Inter. 89, 63-75.
7. Azzouni-Sekkal, A., Boissonnas, J., 1987. Geochemistry of the Tioueine Pan-African granite complex (Hoggar, Algeria). Geol. J. 22, 213-224.
8. Azzouni-Sekkal, A., Boissonnas, J., 1993. Une province magmatique de transition du calco-alcalin à l'alcalin: les granitoïdes panafricains à structure annulaire de la chaîne pharusienne du Hoggar (Algérie). Bull. Soc. Géol. Fr. 164, 597-608.
9. Bertrand, J.M., Caby, R., 1977. Carte géologique du Hoggar: Algeria, Direction des Mines et de la Géologie, SONAREM, 1:1 000,000 scale, 2 sheets.
10. Bertrand, J.M., Meriem, D., Lapique, F., Michard, A., Dautel, D., Gravelle, M., 1986. Nouvelles données radiométriques sur l'âge de la tectonique Pan-Africaine dans le rameau oriental de la chaîne Pharusienne (région de Timgaouine, Hoggar, Algérie). C.R. Acad. Sci. Paris 302, 437-440.
11. Black, R., Latouche, L., Liégeois, J.P., Caby, R., Bertrand, J.M., 1994. Pan-African displaced terranes in the Tuareg shield (Central Sahara). Geology 22, 641-644.
12. Boissonnas, J., 1973. Les granites à structures concentriques et quelques autres granites tardifs de la chaîne pharusienne en Ahaggar (Sahara Central, Algérie). CNRS-CRZA Mém. Paris, Sér. Géol. 16, 662.
13. Bonin, B., 1990. From orogenic to anorogenic settings: evolution of granitoid suites after a major orogenesis. Geol. J. 25, 261-270.
14. Borradaile, G., 1988. Magnetic susceptibility, petrofabric and strain, a review. Tectonophysics 156, 1-20.
15. Borradaile, G., Werner, T., 1994. Magnetic anisotropy of some phyllosilicates. Tectonophysics 235, 223-248.
16. Bouchez, J.L., Diot, H., 1990. Nested granites in question: contrasted emplacement kinematics of independent magmas in the Zaër pluton, Morocco. Geology 18, 966-969.
17. Bouchez, J.L., Gleizes, G., 1995. Two-stage deformation of the Mont-Louis-Andorra granite pluton (Variscan Pyrenees) inferred from magnetic susceptibility anisotropy. J. Geol. Soc. London 152, 669-679.
18. Bouchez, J.L., Lister, G.S., Nicolas, A., 1983. Fabric asymmetry and shear sense in movement zones. Geol. Rundsch. 72, 401-419.
19. Bouchez, J.L., Gleizes, G., Djouadi, T., Rochette, P., 1990. Microstructure and magnetic susceptibility applied to emplacement kinematics of granites: the example of the Foix pluton (French Pyrenees). Tectonophysics 184, 157-171.
20. Bouchez, J.L., Delas, C., Gleizes, G., Nédélec, A., Cuney, M., 1992. Submagmatic microfractures in granites. Geology 20, 35-38.
21. Bouillin, J.-P., Bouchez, J.L., Lespinasse, P., Pêcher, A., 1993. Granite emplacement in an extensional setting: an AMS study of the magmatic structures of Monte Capanne (Elba, Italy). Earth Planet. Sci. Lett. 118, 263-279.
22. Boullier, A.M., 1991. The Pan-African Trans-Saharan Belt in the Hoggar Shield (Algeria, Mali, Niger). A review. In: Dallmeyer, R.D., Lécorché, J.-P. (Eds.), The West African Orogens and Circum Atlantic Correlatives. Springer, Berlin, pp. 85-105.
23. Caby, R., 1989. Precambrian terranes of Benin-Nigeria and Northeast Brazil and the Late Proterozoic South Atlantic fit. Geol. Soc. Am. Spec. Pap. 230, 145-158.
24. Caby, R., 1994. Precambrian coesite from northern Mali: first record and implications for plate tectonics in the trans-Saharan segment of the Pan-African belt. Eur. J. Mineral. 6, 235-244.
25. Castro, A., 1986. Structural pattern and ascent model in the Central Extramadura batholith, Hercynian belt, Spain. J. Struct. Geol. 8, 633-645.
26. 39 Ar des complexes granitiques pan-africains de la région de Tamanrasset (Algérie): relation avec les minéralisations Sn-W associées et l'évolution tectonique du Hoggar central. Bull Soc. Géol. Fr. 163, 733-750.
27. Cogné, J.-P., Perroud, H., 1988. Anisotropy of magnetic susceptibility as a strain gauge in the Flamanville granite, NW France, Phys. Earth Planet. Inter. 51, 264-270.
28. Cruden, A.R., Launeau, P., 1994. Structure, magnetic fabric and emplacement of the Archean Lebel Stock, SW Abitibi Greenstone Belt. J. Struct. Geol. 16, 677-691.
29. Djouadi, M.T., 1994. Granites fini-panafricains de type Taourirt (Hoggar, Algérie): une étude structurale de la susceptibilité magnétique et modèles de mise en place du complexe du Tesnou et du massif de Tioueïne. Thesis, Toulouse, France, 161 pp. (unpubl.).
30. Djouadi, M.T., Bouchez, J.L., 1992. Structure étrange du granite duTesnou (Hoggar, Algérie). C. R. Acad. Sci. Paris 315, 1231-1238.
31. Fernandez, A., Feybesse, J.L., Mezure, J.-F., 1983. Theoretical and experimental study of fabrics developed by different shaped markers in two-dimensional simple shear. Bull. Soc. Géol. Fr. 25, 319-326.
32. Ferré, E., Gleizes, G., Bouchez, J.L., Nnabo, P.N., 1995. Internal fabric and strike-slip emplacement of the Pan-African granite of Solli Hills, Northern Nigeria. Tectonics 14, 1205-1219.
33. Gleizes, G., 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. J. Geophys. Res. 98, 4317-4331.
34. Grégoire, V., de Saint-Blanquat, M., Nédélec, A., Bouchez, J.L., 1995. Shape anisotropy versus magnetic interactions of magnetite grains: experiments and application to AMS in granitic rocks. Geophys. Res. Lett. 22, 2765-2768.
35. Guillet, P., Bouchez, J.L., Wagner, J.J., 1983. Anisotropy of magnetic susceptibility and magmatic structures in the Guérande granite massif, France. Tectonics 2, 419-429.
36. Hargraves, R.B., Johnson, D., Chan, C.Y., 1991. Distribution anisotropy: the cause of AMS in igneous rocks?. Geophys. Res. Lett. 18, 2193-2196.
37. Hrouda, F., 1982. Magnetic anisotropy of rocks and its application in geology and geophysics. Geophys. Surv. 5, 37-82.
38. Ishihara, S., 1977. The Magnetite-series and Ilmenite-series granitic rocks. Min. Geol. 27, 293-305.
39. Lameyre, J., 1987. Granites and evolution of the crust. ISGAM-IUGS Symposium. Rev. Bras. Geosci. 17, 349-359.
40. Liégeois, J.-P., Black, R., Navez, J., Latouche, L., 1994. Early and late Pan-African orogenies in the Air assembly of terranes (Tuareg shield, Niger). Precambian Res. 67, 59-88.
41. Nicolas, A., 1992, Kinematics in magmatic rocks with special reference to gabbros. J. Petrol. 33, 891-915.
42. Nicolas, A., Bouchez, J.L., Boudier, F., 1972. Interpretation cinématique des déformations plastiques dans le massif de Iherzolites de Lanzo (Alpes piémontaises). Tectonophysics 14, 143-171.
43. Paterson, S.R., Vernon, R.H., Tobish, O.T., 1989. A review of criteria for the identification of magmatic and tectonic foliations in granitoids. J. Struct. Geol. 11, 349-363.
44. Peacock, S.M., 1990. Numerical simulation of regional and contact metamorphism using the Macintosh microcomputer. J. Geol. Educ. 38, 132-137.
45. Petford, N., Atherton, M.P., 1992. Granitoid emplacement and deformation along a major crustal lineament: the Cordillera Blanca, Peru. Tectonophysics 205, 171-185.
46. Ramsay, J.G., 1967. Folding and Fracturing of Rocks. McGraw-Hill, New York, NY, 568 pp.
47. Rochette, P., 1987. Magnetic susceptibility of the rock matrix related to magnetic fabric studies. J. Struct. Geol. 9, 1015-1020.
48. Siegesmund, S., Ullemeyer, K., Dahms, M., 1995. Control of magnetic rock fabrics by mica preferred orientation: a quantitative approach. J. Struct. Geol. 17, 1601-1613.
49. Stacey, F.D., 1960. Magnetic anistropy in igneous rocks. J. Geophys. Res. 65, 2429-2442.
50. 2O, with particular reference to contact-metamorphosed pelites. J. Metamorph. Geol. 12, 99-119.
51. Yardley, B.W.D., 1989. An Introduction to Metamorphic Petrology. Longman, London, 248 pp.