Using geochemistry to map mantle flow beneath the Lau Basin

Geology

Volumn 26, Issue 11, 1998, Pages 1019-1022

  Turner, Simon ^a   Hawkesworth, Chris ^a  

^a OPEN UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

GEOLOGY;

GEOCHEMICAL SIGNATURES; GEOCHEMICAL TRACER; HELIUM ISOTOPES; PACIFIC PLATES; PLATE MOTIONS; SAMOAN PLUMES; SUBDUCTING SLABS; VOLCANICLASTIC SEDIMENTS;

GEOCHEMISTRY;

GEOCHEMISTRY; HELIUM ISOTOPE; MAGMATISM; MANTLE CONVECTION; TRACER;

LAU BASIN; PACIFIC OCEAN;

EID: 84879885489     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/0091-7613(1998)026<1019:UGTMMF>2.3.CO;2     Document Type: Article

References (37)

1. Bercovici, D., Schubert, G., and Glatzmaier, G. A., 1989, Three-dimensional spherical models of convection in the Earth's mantle: Science, v. 244, p. 950-955.
2. Bevis, M., Taylor, F. W., Schutz, B. E., Recy, J., Isacks, B. L., Helu, S., Singh, R., Kendrick, E., Stowell, J., Taylor, B., and Calmant, S., 1995, Geodetic observations of very rapid convergence and back-arc extenstion at the Tonga arc: Nature, v. 374, p. 249-251.
3. Christie, D. M., West, B. P., Pyle, D. G., and Hanan, B., 1998, Chaotic topography, mantle flow and mantle migration in the Australian-Antarctic Discordance: Nature, in press.
4. Ewart, A., and Hawkesworth, C. J., 1987, The Pleistocene-Recent Tonga-Kermadec arc lavas: Interpretation of new isotopic and rare earth data in terms of a depleted mantle source model: Journal of Petrology, v. 28, p. 495-530.
5. Farley, K. A., 1995, Rapid cycling of subducted sediments into the Samoan mantle plume: Geology, v. 23, p. 531-534.
6. Farley, K. A., Natlund, J. H., and Craig, H., 1992, Binary mixing of enriched and undegassed (primitive?) mantle components (He, Sr, Nd, Pb) in Samoan lavas: Earth and Planetary Science Letters, v. 111, p. 183-199.
7. Gast, P. W., Tilton, G. R., and Hedge, C., 1964, Isotopic composition of lead and strontium from Ascension and Gough Islands: Science, v. 145, p. 1181-1185.
8. Giardini, D., and Woodhouse, J. H., 1986, Horizontal shear flow in the mantle beneath the Tonga arc: Nature, v. 319, p. 551-555.
9. Hamburger, M. W., and Isacks, B. L., 1987, Deep earthquakes in the southwest Pacific: A tectonic interpretation: Journal of Geophysical Research, v. 92, p. 13841-13854.
10. Hart, S. R., 1984, A large-scale isotope anomaly in the Southern Hemisphere mantle: Nature, v. 309, p. 753-757.
11. Hauri, E. H., Whitehead, J. A., and Hart, S. R., 1994, Fluid dynamic and geochemical aspects of entrainment in mantle plumes: Journal of Geophysical Research, v. 99, p. 24275-24300.
12. Hawkesworth, C. J., Mantovani, M. S. M., Taylor, P. N., and Palacz, Z., 1986, Evidence from the Parana of south Brazil for a continental contribution to Dupal basalts: Nature, v. 322, p. 356-359.
13. Hawkesworth, C. J., Turner, S. P., McDermott, F., Peate, D. W., and van Calsteren, P., 1997, U-Th isotopes in arc magmas: Implications for element transfer from the subducted crust: Science, v. 276, p. 551-555.
14. Hergt, J. M., and Hawkesworth, C. J., 1994, Pb-, Sr-, and Nd-isotopic evolution of the Lau Basin: Implications for mantle dynamics during backarc opening, in Hawkins, J., et al., eds., Proceedings of the Ocean Drilling Program, Scientific results, Volume 135: College Station, Texas, Ocean Drilling Program, p. 505-517.
15. Hilton, D. R., Hammerschmidt, K., Looke, G., and Friedrichsen, H., 1993, Helium and argon isotope systematics of the central Lau Basin and Valu Fa Ridge: Evidence of crust/mantle interactions in a back-arc basin: Geochimica et Cosmochimica Acta, v. 57, p. 2819-2841.
16. Isacks, B. L., and Barazangi, M., 1977, Geometry of Benioff zones: Lateral segmentation and downwards bending of the subducted lithosphere, in Talwani, M., and Pitman, W. C., eds., Island arcs, deep sea trenches, and back-arc basins: Washington D.C., American Geophysical Union, Maurice Ewing Series, v. 1, p. 99-114.
17. Kay, R. W., Sun, S.-S., and Lee-Hu C.-N, 1978, Pb and Sr isotopes in volcanic rocks from the Aleutian Islands and Pribilof Islands, Alaska: Geochimica et Cosmochimica Acta, v. 42, p. 263-273.
18. Kincaid, C., Schilling J.-G., and Gable, C., 1996, The dynamics of off-axis plume-ridge interaction in the uppermost mantle: Earth and Planetary Science Letters, v. 137, p. 29-43.
19. Lonsdale, P., 1975, Sedimentation and tectonic modification of Samoan archipelagic apron: American Association of Petroleum Geologists, Bulletin, v. 59, p. 780-798.
20. Loock, G., McDonough, W. F., Goldstein, S. L., and Hofmann, A. W., 1990, Isotopic compositions of volcanic glasses from the Lau Basin: Marine Mining, v. 9, p. 235-245.
21. McKenzie, D., 1984, The generation and compaction of partially molten rock: Journal of Petrology, v. 25, p. 713-765.
22. McKenzie, D. P., and Bickle, M. J., 1988, The volume and composition of melt generated by extension of the lithosphere: Journal of Petrology, v. 29, p. 625-679.
23. Millen, D. W., and Hamburger, M. W., 1998, Seismological evidence for tearing of the Pacific plate at the northern termination of the Tonga subduction zone: Geology, v. 26, p. 659-662.
24. Morris, J. D., and Hart, S. R., 1983, Isotopic and incompatible element constraints on the genesis of island arc volcanics from Cold Bay and Amak Island, Aleutians, and implications for mantle structure: Geochimica et Cosmochimica Acta, v. 47, p. 2015-2030.
25. Natland, J. H., 1980, The progression of volcanism in the Samoan linear volcanic chain: American Journal of Science, v. 280, p. 709-735.
26. Pearce J. A., Ernewein M., Bloomer S. H., Parson L. M., Murton B. J., and Johnson L. E., 1995, Geochemistry of Lau Basin volcanic rocks: Influence of ridge segmentation and arc proximity, in Smellie, J. L., ed., Volcanism associated with extension at consuming plate margins: Geological Society London Special Publication 81, p. 53-76.
27. Perfit, M. R., and Kay, R. W., 1986, Comment on "Isotopic and incompatible element constraints on the genesis of island arc volcanics from Cold Bay and Amak Island, Aleutians, and implications for mantle structure" by J. D. Morris and S. R. Hart: Geochimica et Cosmochimica Acta, v. 50, p. 477-481.
28. Plank, T., Langmuir, C. H., 1998, The geochemical composition of subducting sediment and its consequences for the crust and mantle: Chemical Geology v. 145, p. 325-394.
29. Poreda, R. J., and Craig, H., 1992, He and Sr isotopes in the Lau Basin mantle: Depleted and primitive mantle components: Earth and Planetary Science Letters, v. 113, p. 487-493.
30. Regelous, M., Collerson, K. D., Ewart, A., and Wendt, J. I., 1997, Trace element transport rates in subduction zones: Evidence from Th, Sr, and Pb isotope data for Tonga-Kermadec arc lavas: Earth and Planetary Science Letters, v. 150, p. 291-302.
31. Taylor, B., Zellmer, K., Martinez, F., and Goodliffe, A., 1996, Sea-floor spreading in the Lau back-arc basin: Earth and Planetary Science Letters, v. 144, p. 35-40.
32. Turner, S., and Hawkesworth, C., 1997, Constraints on flux rates and mantle dynamics beneath island arcs from Tonga-Kermadec lava geochemistry: Nature, v. 389, p. 568-573.
33. 230 Th disequilibria, magma petrogenesis and flux rates beneath the depleted Tonga-Kermadec island arc: Geochimica et Cosmochima Acta, v. 61, p. 4855-4884.
34. Volpe, A. M., Macdougall, J. D., and Hawkins, J. W., 1988, Lau Basin basalts (LBB): Trace element and Sr-Nd isotopic evidence for heterogeneity in backarc basin mantle: Earth and Planetary Science Letters, v. 90, p. 174-186.
35. Watson, S., and McKenzie, D., 1991, Melt generation by plumes: A study of Hawaiian volcanism: Journal of Petrology, v. 32, p. 501-537.
36. Wendt, J. I., Regelous, M., Collerson, K. D., and Ewart, A., 1997, Evidence for a contribution from two mantle plumes to island arc lavas from northern Tonga: Geology, v. 25, p. 611-614.
37. Wright, E., and White, W. M., 1986, The origin of Samoa: New evidence from Sr, Nd, and Pb isotopes: Earth and Planetary Science Letters, v. 81, p. 151-162.