Large-scale chemical and thermal division of the pacific mantle

Nature

Volumn 399, Issue 6734, 1999, Pages 345-350

  Vlastelic I ^a,b   Aslanian, D ^a   Dosso, L ^a   Bougault, H ^a   Olivet, J L ^a   Geli L ^a  

^a IFREMER   (France)

^b UMR 7063   (France)

Author keywords

[No Author keywords available]

Indexed keywords

IGNEOUS GEOCHEMISTRY; MANTLE CHEMISTRY; MID-OCEAN RIDGE BASALT; OCEAN BASIN;

ARTICLE; GEOLOGY; PRIORITY JOURNAL; RADIOISOTOPE DISTRIBUTION; SEA; TEMPERATURE;

EID: 0344223531     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/20664     Document Type: Article

References (31)

1. Dupré, B. & Allègre, C. J. Pb-Sr isotope variation in Indian Ocean basalts and mixing phenomena. Nature 303, 142-143 (1983).
2. White, W. M., Hofmann, A. W. & Puchelt, H. Isotope geochemistry of Pacific mid-ocean ridge basalt. J. Geophys. Res. 92, 4881-4893 (1987).
3. Cohen, R. S. & O'Nions, R. K. The lead, neodymium and strontium isotopic structure of ocean ridge basalts. J. Petrol. 23, 299-324 (1982).
4. Ferguson, E. M. & Klein, E. M. Fresh basalts from the Pacific Antarctic ridge extend the Pacific geochemical province. Nature 366, 330-333 (1993).
5. Klein, E. M., Langmuir, C. H., Zindler, A., Staudigel, H. & Hamelin, B. Isotope evidence of a mantle convection boundary at the Australian-Antarctic discordance. Nature 333, 623-629 (1988).
6. Davies, G. F. & Pribac, F. in The Mesozoic Pacific: Geology, Tectonic and Volcanism (eds Pringle, M. S. et al.) 39-52 (Geophys. Monogr. 77, Am. Geophys. Un., Washington DC, 1993).
7. Castillo, P. The Dupal anomaly as a trace of the upwelling lower mantle. Nature 336, 667-670 (1988).
8. Castillo, P. R., Natland, J., Niu, Y. & Lonsdale, P. F. Sr, Nd and Pb isotopic variation along the Pacific-Antarctic risecrest, 53-57 degrees S: Implications for the composition and dynamics of the South Pacific upper mantle. Earth Planet. Sci. Lett. 154, 109-125 (1998).
9. Macdougall, J. D. & Lugmair, G. W. Extreme isotopic homogeneity among basalts from the southern East Pacific Rise mantle or mixing effect? Nature 313, 209-211 (1985).
10. Macdougall, J. D. & Lugmair, G. W. Sr and Nd isotopes ill basalts from the East Pacific Rise: significance for mantle heterogeneity. Earth Planet. Sci. Lett. 77, 273-284 (1986).
11. Bach, W, et al. Unusually large Nb-Ta depletions in North Chile ridge basalts at 36 degrees 50′ to 38 degrees 56′ S: Major element, trace element, and isotopic data. Earth Planet. Sci. Lett. 142, 223-240 (1996).
12. Vlastélic, I. et al. Geochemistry of the Hollister Ridge: Relation with the Louisville hotspot and the Pacific-Antarctic Ridge. Earth Planet. Sci. Lett. 160, 777-793 (1998).
13. Klein, E. M. & Karsten, J. L. Ocean-ridge basalts with convergent-margin geochemical affinities from the Chile Ridge. Nature 374, 52-57 (1995).
14. Staudigel, H. et al. The longevity of the South Pacific isotopic and thermal anomaly. Earth Planet. Sci. Lett. 102, 24-44 (1991).
15. McNutt, M. K. & Fisher, K. M. in Seamounts, Islands, and Atolls (eds Keating, B. H., Fryer, P., Batiza, R. & Boehlert, G. W.) 25-34 (Geophys. Monogr. 43, Am. Geophys. Un., Washington DC, 1987).
16. McNutt, M. K. & Judge, A. V. The superswell and mantle dynamics beneath the South Pacific. Science 248, 969-975 (1990).
17. McNutt, M. K., Winter, E. L., Sager, W. W., Natland, J. H. & Ito, J. The Darwin rise: a Cretaceous superswell. Geophys. Res. Lett. 17, 1101-1104 (1990).
18. Hager, B. H., Clayton, R. W., Richards, M. A., Comer, R. P. & Dziewonski, A. M. Lower mantle heterogeneity, dynamic topography, and the geoid. Nature 313, 541-545 (1985).
19. Dziewonski, A. & Woodhouse, J. Global images of the Earth's interior. Science 236, 37-48 (1987).
20. Tatsumi, Y., Shinjoe, H., Ishizuka, H., Sager, W. W. & Klaus, A. Geochemical evidence for a mid-Cretaceous superplume. Geology 26, 151-154 (1998).
21. Chauvel, C., Hofmann, A. W. & Vidal, P. HIMU EM - The French Polynesian connection. Earth Planet. Sci. Lett. 110, 99-119 (1992).
22. Hémond, C. & Devey, C. W. The Foundation seamount chain, southeastern Pacific: first isotopic evidence of a newly discovered hotspot track. J. Conf. Abs. 1, 255 (1996).
23. Hanan, B. B. & Graham, D. W. Lead and helium isotope evidence from oceanic basalts for a common deep source of mantle plumes. Science 272, 991-995 (1996).
24. Zindler, A., Staudigel, H. & Batiza, R. Isotope and trace element geochemistry of young Pacific seamounts: implications for the scale of upper mantle heterogeneity. Earth Planet. Sci. Lett. 70, 175-195 (1984).
25. Hanson, G. N. Geochemical evolution of the suboceanic mantle. J. Geol. Soc. Lond. 134, 235-253 (1977).
26. Sleep, N. Tapping of magmas from ubiquitous mantle heterogeneities: an alternative to mantle plume? J. Geophys. Res. 89, 10029-10041 (1984).
27. Klein, E. M. & Langmuir, C. H. Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness. J. Geophys. Res. 92, 8089-8115 (1987).
28. Smith, W. H. F. & Sandwell, D. T. Global sea floor topography from satellite altimetry and ship depth soundings. Science 277, 1956-1962 (1997).
29. Bach, W., Hegner, E., Erzinger, J. & Satir, M. Chemical and isotopic variations along the superfast spreading East Pacific Rise from 6 degrees S to 30 degrees S. Contrib. Mineral. Petrol. 116, 365-380 (1994).
30. Géli, L. et al. Evolution of the Pacific-Antarctic Ridge south of the Udintsev fracture zone. Science 278, 1281-1284 (1997).
31. Londsdale, P. Geomorphology and structural segmentation of the crest of the Southern (Pacific-Antarctic) East Pacific Rise. J. Geophys. Res. 99, 4683-4702 (1994).