Highly magnetised and differentiated basalts at the 18-19° S propagating spreading centre in the North Fiji Basin

Marine Geophysical Research

Volumn 20, Issue 2, 1998, Pages 129-137

  Horen, Hélène ^a   Fleutelot, Corinne ^b,c  

^a LABORATOIRE DE GÉOLOGIE   (France)

^b UNIVERSITÉ DE BRETAGNE OCCIDENTALE   (France)

^c UNIVERSITÉ DE RENNES 1   (France)

Author keywords

Fe Ti basalts; Maghemitisation; Magma differentiation; Magnetic telechemistry; Magnetisation; Propagating spreading centre

Indexed keywords

EID: 0005087726     PISSN: 00253235     EISSN: None     Source Type: Journal    
DOI: 10.1023/A:1004457812905     Document Type: Article

References (36)

1. Alteriis (de) G., Ruellan, E., Auzende, J.M., Ondreas, H., Bendel, V., Gracia-Mont, E., Lagabrielle, Y., Huchon, P. and Tanahashi, M., 1993, Propagating rift in the North Fiji Basin (southwest Pacific) Geology 21, 583-586.
2. Auzende, J.M., Lafoy, Y. and Marset, B., 1988, Recent geodynamic evolution of the North Fiji basin (SW Pacific), Geology 16, 925-929.
3. Auzende, J.M., Pelletier, B. and Eissen, J.P., 1995, The north Fiji Basin: Geology structure and geodynamic evolution, In B. Taylor (ed.), Back-arc Basins: Tectonics and Magmatism. Plenum Press, New York, pp. 139-175.
4. Beske-Diehl, S.J., 1990, Magnetization during low-temperature oxidation of seafloor basalts: No large scale chemical remagnetization, J. Geophys. Res. 95, 21413-21432.
5. Bina, M.M., 1990, Magnetic properties of basalts from ODP Hole 648B on the mid-Atlantic Ridge near 23° N, Proc. O.D.P. Sci. Results 106/109, 297-302.
6. Bleil, U and Petersen, N., 1983, Variations in magnetization intensity and low-temperature titanomagnetite oxidation of ocean floor basalts, Nature 301, 384-387.
7. Chase, C.G., 1971, Tectonic history of the Fiji plateau, Geol. Soc. Am. Bull. 82, 3087-3110.
8. Christie, D.M. and Sinton, J.M., 1981, Evolution of abyssal lavas along propagating segments of the Galapagos spreading center, Earth Planet. Sci. Lett. 56, 321-335.
9. Danyushevsky, L.V., Fallon, T.J., Sobolev, A.V., Crawford, A.J., Caroll, M. and Price, R.C., 1993, The H2O content of basalts glasses from Southwest Pacific back-arc basins, Earth Planet. Sci. Lett. 117, 347-362.
10. Day, R., Fuller, M. and Schmidt, V.A., 1977, Hysteresis properties of titanomagnetites: grain-size and compositional dependence, Phys. Earth Planet. Int. 13, 260-267.
11. Dubois, J., Dugas, F., Lapouille, A., and Louat, R., 1975, Fossés d'effondrement en arrière de l'arc des Nouvelles Hébrides. Mécanismes proposés, Rev. Géogr. Phys. Géol. Dyn. 17(1), 73-94.
12. Eissen, J.P., Lefèvre, C., Maillet, P., Morvan, G. and Nohara, M., 1991, Petrology and geochemistry of the central North Fiji Basin spreading centre (Southwest Pacific) between 16° S and 22° S, Mar. Geol. 98, 201-239.
13. Falvey, D.A., 1975, Arc reversals, and a tectonic model for the North Fiji Basin, Austr. Soc. Explor. Geophys. Bull. 6, 47-49.
14. Fleutelot, C., Eissen, J.P., Tonnerre, T., Danyushevsky, L., Rory, V., Mollard, L., Juteau, T., Cotten, J. and Bohn, M., 1996, Propagation en contexte arrière arc: premiers résultats de la campagne ProFeTi (Bassin Nord-Fidjien, Pacifique SW), C. R. Acad. Sci. Paris 322, 853-860.
15. Fleutelot, C., Caroff, M., 1998, Geochemical evolution in periodically replenished and tapped magma chambers: a case study from the North-South Propagating Spreading Center, North Fiji basin, 18°-19° S, Earth Planet. Sci. Lett., submitted.
16. Fleutelot, C., Eissen, J.-P., Dosso, L., Juteau, T., Launeau, P., Bollinger, C., Cotten, J., Danyushevsky, L., Savoyant, L., 1998, Petrological and geochemical characteristics of the abyssal lavas from the North-South Propagating center (North Fiji Basin): Comparison some other propagating spreading centers, Min and Petrology, submitted.
17. Gill, J. B. and Gorton, M., 1973, A proposed geological and geochemical history of eastern Melanesia, In P.J. Coleman (ed.), The Western Pacific: Island Arcs, Marginal Seas and Geochemistry, University of Australia Press, pp. 543-566.
18. Grommé, S., Mankinen, E.A., Marshall, M. and Coe, R.S., 1979, Geomagnetic paleointensities by the Thelliers'method from submarine pillow basalts: Effects of sea floor weathering, J. Geophys. Res. 84, 3557-3575.
19. Juteau, T., Bideau, D., Dauteuil, O., Manac'h, G., Naïdoo, D.D., Nehlig, P., Ondreas, H., Tivey, M.A., Whipple, K.X. and Delaney, J.R., 1995, De la propagation à l'accrétion océanique: étude par submersible du mur nord de la fosse Ouest-Blanco (Zone de fracture Blanco, Pacifique NE), Bull. Soc. Géol. France 166(2), 105-121.
20. Kent D.V. and Gee J., 1996, Magnetic alteration of zero age basalt, Geology, 24, 703.
21. MacDonald, K.C., Luyendyk, B.P. and Von Herzen, R.P., 1973, Heat flow and plate boundaries in Melanesia, J. Geophys. Res. 78, 2537-2546.
22. Malahoff, A., Feden, R.H. and Fleming, H.S., 1982, Magnetic anomalies and tectonic fabric of marginal basins north of the New Zealand, J. Geophys. Res. 87, 4109-4125.
23. Manac'h, G., Fleutelot, C., Juteau, T. and Cotten, J., 1995, De la propagation à l'accrétion: variations pétrologiques et géochimiques enregistrées par les basaltes océaniques du mur nord de la dépression Ouest Blanco et du Plateau de Parks (Dorsale Juan de Fuca, Pacifique Oriental), C.R. Acad. Sc. Paris 320 (II), 507-514.
24. Marshall M. and Cox, A., 1972, Magnetic changes in pillows basalts due to sea floor weathering, J. Geophys. Res. 77, 6459-6469.
25. Pelletier, B., Lafoy, Y. and Missègue, F., 1993, Morphostructure and magnetic fabric of the Northwestern North Fiji Basin, Geophys. Res. Lett. 20, 1151-1154.
26. Prévot, M., Lacaille, A. and Makinen, E.A., 1981, Magnetic effects of maghemitization of oceanic crust, J. Geophys. Res. 86, 4009-4020.
27. Prévot, M., Mankinen, E.A., Grommé, S. and Lecaille, A., 1983, High paleointensities of geomagnetic field from mid-Atlantic Ridge near 36.8° N, J. Geophys. Res. 88, 2316-2326.
28. Readman P. W. and O'Reilly, W., 1972, Magnetic properties of oxidized (cation-deficient) titanomagnetites (Fe, Ti)3 O4, J. Geomag. Geoelectr. 24, 69-90.
29. Ruellan, E., Huchon, P., Auzende, J.M., and Gracia, E., 1994, Propagating rift and overlapping spreading center in the North Fiji Basin, Marine Geology 116, 37-56.
30. Sempéré, J.C., 1991, High magnetization zones near spreading center discontinuities, Earth Planet. Sci. Lett. 107, 389-405.
31. Sinton, J.J., Wilson, D.S., Christie, D.M., Hey, R.N. and Delaney, J.R., 1983, Petrologic consequences of rift propagation on oceanic spreading ridges, Earth Planet. Sci. Lett. 62, 193-207.
32. Sinton, J.J. and Detrick, R.S., 1992, Mid-Ocean Ridge magma chambers, J. Geophys. Res. 97, 197-216.
33. Smith-Daignères, B., 1984, Propriétés magnétiques de roches basaltiques provenant de la couche 2 de la croûte océanique. Effets du degré de cristallisation et de l'altération basse température, Thèse d'état, Univ. Paris 6, 339 pp.
34. Smith, B.M., 1987, Consequences of the maghemitization on the magnetic properties of submarine basalts: synthesis of previous works and results concerning basement rocks from mainly D.S.D.P. Legs 51 and 52, Phys. Earth Planet. Int. 46, 206-226.
35. Vogt, P.R., 1979, Amplitudes of oceanic magnetic anomalies and the chemistry of oceanic crust: synthesis and review of 'magnetic telechemistry', Can. J. Earth Sci. 16, 2236-2262.
36. Weiland, C.M., Macdonald, K.C. and Grindlay, N.R., 1996, Ridge segmentation and the magnetic structure of the Southern Mid-Atlantic Ridge 26° S and 31-35° S: Implications for magmatic processes at slow spreading centers, J. Geophys. Res. 101, 8055-8073.