Paleomagnetic study of the Great Foum Zguid dyke (southern Morocco): A positive contact test related to metasomatic processes

Geophysical Research Letters

Volumn 33, Issue 21, 2006, Pages

  Silva, P F ^a,b   Henry, B ^c,e   Marques, F O ^b   Madureira, P ^d   Miranda, J M ^b  

^a INSTITUTO SUPERIOR DE ENGENHARIA DE LISBOA   (Portugal)

^b UNIVERSITY OF LISBON   (Portugal)

^c CNRS   (France)

^d UNIVERSITY OF ÉVORA   (Portugal)

^e INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

Author keywords

[No Author keywords available]

Indexed keywords

EARTH ATMOSPHERE; GEOPHYSICS; MAGNETIC FIELD EFFECTS; MAGNETIZATION; REMANENCE; ROCKS;

MAGMA INTRUSION; METASOMATIC PROCESSES; PALEOMAGNETISM;

MAGNETIC PROSPECTING;

DIKE; EARTH; EMPLACEMENT; HOST ROCK; IGNEOUS ROCK; MAGMATISM; MAGNETIC FIELD; MAGNETIZATION; METASOMATISM; PALEOMAGNETISM; TESTING METHOD;

AFRICA; MOROCCO; NORTH AFRICA;

EID: 34248538135     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2006GL027498     Document Type: Article

References (19)

1. Aarab, E. M., A. Rahimi, and G. Rocci (1994), Un exemple de différenciation transverse: le Grand Dyke de Foum Zguid (Anti-Atlas, Maroc), C.R. Acad. Sci. Paris. Ser. II, 319, 209-215.
2. Besse, J., and V. Courtillot (2002), Apparent and true polar wander and the geometry of the geomagnetic field over the last 200 Myr, J. Geophys. Res., 107(B11), 2300, doi:10.1029/2000JB000050.
3. Bouabdallah, H., B. Henry, N. E. Merabet, and S. Maouche (2003), Juxtaposed and superimposed magnetizations in Carboniferous formations of the Tindouf basin, Bull. Serv. Geol. Algerie, 14, 53-64.
4. Butler, R. (Ed.) (1992), Paleomagnetism: Magnetic Domains to Geologic Terranes, 250 pp., Blackwell Sci., Malden, Mass.
5. Dunlop, D. J. and Ö. Özdemir (Eds.) (1997), Rock Magnetism: Fundamentals and Frontiers, 573 pp., Cambridge Univ. Press, New York.
6. Fisher, R. A. (1953), Dispersion on a sphere, Proc. R. Soc. London, Ser. A, 277, 98-102.
7. Hailwood, E. A., and J. G. Mitchell (1971), Paleomagnetic and radiometric dating results from Jurassic intrusions in South Morocco, Geophys. J. R. Astron. Soc., 24, 351-364.
8. Henry, B., N. E. Merabet, M. E. M. Derder, and B. Bayou (2004), Chemical remagnetizations in the Illizi basin (Algeria), Geophys. J. Int., 156, 200-212.
9. Kirschvink, J. L. (1980), The least squares line and plane and the analysis of paleomagnetic data, Geophys. J. R. Astron. Soc., 62, 699-718.
10. Knight, K. B., S. Nomade, P. R. Renne, A. Marzoli, H. Bertrand, and N. Youbim (2004), The Central Atlantic Magmatic Province at the Triassic-Jurassic boundary: Paleomagnetic and 40Ar/39Ar evidence from Morocco for brief, episodic volcanism, Earth Planet. Sci. Lett., 228, 143-160.
11. Leblanc, M. M. (1974), Le grand dyke de dolerite de l'Anti-Atlas et le magmatisme jurassique du Sud marocain, C.R. Acad. Sci. Paris, Ser. D, 276, 2943-2946.
12. Marcais, J., and G. Choubert (1956), Les Grands Traits de la Géologie du Maroc, Lexique Stratigraphique du Maroc, Introduction Géologique, Serv. Géol. du Maroc, Rabat.
13. May, P. R. (1971), Pattern of Triassic-Jurassic diabase dikes around the North Atlantic in the context of predrift position of the continents, Geol. Soc. Am. Bull., 82, 1285-1292.
14. McFadden, P. L., and M. W. McElhinny (1990), Classification of the reversal tests in paleomagnetism, Geophys. J. Int., 103, 725-729.
15. O'Reilly, W. (Ed.) (1984), Rock and Mineral Magnetism, 220 pp., CRC Press, Boca Raton, Fla.
16. Palencia-Ortas, A. (2004), Estudio Paleomagnético de rocas de edad Jurásica de La Peninsula Ibérica y sur de Marruecos, Ph.D Thesis, Universidad Complutense de Madrid, ISBN: 84-669-2865-0.
17. Sebai, A., G. Feraud, H. Bertrand, and J. Hanes (1991), 40Ar/39Ar dating and geochemistry of tholeiitic magmatism related to the early opening of the Central Atlantic rift, Earth Planet. Sci. Lett., 104, 455-472.
18. Silva, P. F., F. O. Marques, B. Henry, A. Mateus, N. Lourenço, and J. M. Miranda (2004), Preliminary results of a study of magnetic properties in the Foum-Zguid dyke (Morocco), Phys. Chem. Earth, 29, 909-920.
19. Silva, P. F., B. Henry, F. O. Marques, A. Mateus, P. Madureira, N. Lourenco, and J. M. Miranda (2006), Variation of magnetic properties in sedimentary rocks hosting the Foum Zguid dyke (Southern Morocco): Combined effects of re-crystallization and Fe-metasomatism, Earth Planet. Sci. Lett., 241, 978-992.