The generation of a compositional lithosphere by mid-ocean ridge melting and its effect on subsequent off-axis hotspot upwelling and melting

Earth and Planetary Science Letters

Volumn 146, Issue 1-2, 1997, Pages 213-232

  Morgan, Jason Phipps ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Hot spots; Lithosphere; Melting; Mid ocean ridges; Upwelling; Volcanism

Indexed keywords

HOT SPOT; HOTSPOTS; LITHOSPHERE; MELTING; MID OCEAN RIDGE; MID-OCEAN RIDGES; UPWELLING; VOLCANISM;

EID: 0030835579     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/s0012-821x(96)00207-5     Document Type: Article

References (49)

1. S. Karato, Does partial melting reduce the creep strength of the upper mantle, Nature 319, 309-310, 1986.
2. G. Hirth and D.L. Kohlstedt, Water in the oceanic upper mantle: implications for rheology, melt extraction and the evolution of the lithosphere, Earth Planet. Sci. Lett. 144, 93-108, 1996.
3. R.M. Ellam, Lithosphere thickness as a control on basalt geochemistry, Geology 20, 153-156, 1992.
4. P.C. Hess, Origins of Igneous Rocks, Harvard Univ. Press, Cambridge, MA, 1989.
5. P. Hess, Phase Equilibria Constraints on the Origin of Ocean Floor Basalts, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
6. A.W. Hofmann, C. Hémond, I. Raczek, K. Lehnert, J.M. Rhodes, et al., Source compositions of Kilauea and Moana Loa, EOS Trans. AGU 74, 630, 1993.
7. R.S. White, Melt production rates in mantle plumes, Philos. Trans. R. Soc. London A 342, 137-153, 1993.
8. S. Watson and D.P. McKenzie, Melt generation by plumes: a study of Hawaiian volcanism, J. Petrol. 32, 501-537, 1991.
9. E.R. Oxburgh and E.M. Parmentier, Compositional and density stratification in oceanic lithosphere - causes and consequences, J. Geol. Soc. London 133, 343-355, 1977.
10. T.H. Jordan, Mineralogies, densities, and seismic velocities of garnet Iherzolites and their geophysical implications, in: Proc. 2nd Int. Kimberlite Conf., Vol. 2, F.R. Boyd and H.O.A. Meyer, eds., AGU, Washington, DC, 1979.
11. A.E. Ringwood, Composition and Petrology of the Earth's Mantle, McGraw-Hill, New York, NY, 1975.
12. D.L. Kohlstedt and C. Goetze, Low-stress, high-temperature creep in olivine single crystals, J. Geophys. Res. 79, 2045-2051, 1974.
13. A. Nicolas, Structure of Ophiolites and Dynamics of Oceanic Lithosphere, Kluwer, Dordrecht, 1989.
14. J.-P. Poirier, Creep of Crystals, Cambridge Univ. Press, Cambridge, 1985.
15. S.-I. Karato and P. Wu, Rheology of the upper mantle: A synthesis, Science 260, 771-778, 1993.
16. S. Maaløe, Geochemical aspects of permeability controlled partial melting and fractional crystallization, Geochim. Cosmochim. Acta 46, 43-57, 1982.
17. S. Maaløe, Fractional crystallization and melting within binary systems with solid-solution, Am. J. Sci. 284, 272-287, 1984.
18. C.H. Langmuir, E.M. Klein and T. Plank, Petrological systematics of mid-ocean ridge basalts: constraints on melt generation beneath ocean ridges, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
19. D.W. Forsyth, Crustal thickness and the average depth and degree of melting in fractional melting models of passive flow beneath mid-ocean ridges, J. Geophys. Res. 98, 16,073-16,079, 1993.
20. D.W. Forsyth, Geophysical constraints on mantle flow and melt generation beneath mid-ocean ridges, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
21. H.J.B. Dick, Abyssal peridotites, very slow spreading ridges, and ocean ridge magmatism, in: Magmatism in the Ocean Basins, A.D. Saunders and M.J. Norry, eds., Geol. Soc. London Spec. Publ. 42, 1989.
22. W.S. Broecker and V.M. Oversby, Chemical Equilibria in the Earth, McGraw-Hill, New York, NY, 1971.
23. P.D. Asimov, M.M. Hirschmann, M.S. Ghiorso, M.J. O'Hara and E.M. Stolper, The effect of pressure-induced solid-solid phase transitions on decompression melting of the mantle, Geochim. Cosmochim. Acta 59, 4489-4506, 1995.
24. D.L. Kohlstedt, Structure, rheology, and permeability of partially molten rocks at low melt fractions, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
25. K.T.M. Johnson, H.J.B. Dick and N. Shimizu, Melting in the oceanic upper mantle: an ion microprobe study of diopsides in abyssal peridotites, J. Geophys. Res. 95, 2661-2678, 1990.
26. D.L. Turcotte and J. Phipps Morgan, The physics of magma migration and mantle flow beneath a mid-ocean ridge, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
27. C. Sotin and E.M. Parmentier, Dynamical consequences of compositional and thermal density stratification beneath spreading centers, Geophys. Res. Lett. 16, 368-377, 1989.
28. D.R. Scott and D.J. Stevenson, A self-consistent model of melting, magma migration, and buoyancy driven circulation beneath mid-ocean ridges, J. Geophys. Res. 94, 2973-2988, 1989.
29. D.R. Scott, Small-scale convection and mantle melting beneath mid-ocean ridges, in: Mantle Flow and Melt Generation at Mid-Ocean Ridges, J. Phipps Morgan et al., eds., AGU, Washington, DC, 1992.
30. M.J. Cordery and J. Phipps Morgan, Convection and melting at mid-ocean ridges, J. Geophys. Res. 98, 19,477-19,503, 1993.
31. D.W. Sparks and E.M. Parmentier, The structure of three-dimensional convection beneath oceanic spreading centres, Geophys. J. Int. 112, 81-91, 1993.
32. Y.J. Chen, Oceanic crustal thickness versus spreading rate, Geophys. Res. Lett. 19, 753-756, 1992.
33. R.S. White, D.P. McKenzie and R.K. O'Nions, Oceanic crustal thicknesses from seismic measurements and rare earth element inversions, J. Geophys. Res. 97, 19,683-19,715, 1992.
34. G.F. Davies, Ocean bathymetry and mantle convection, 1, large-scale flow and hotspots, J. Geophys. Res. 93, 10,467-10,480, 1988.
35. N.H. Sleep, Hotspots and mantle plumes: some phenomenology, J. Geophys. Res. 95, 6715-6736, 1990.
36. J. Phipps Morgan, W.J. Morgan and E. Price, Hotspot melting generates both hotspot volcanism and a hotspot swell?, J. Geophys. Res. 100, 8045-8062, 1995.
37. M. Spiegelman and D. McKenzie, Simple 2-D models for melt extraction at mid-ocean ridges and island arcs, Earth Planet. Sci. Lett. 83, 137-152, 1987.
38. J. Phipps Morgan, Melt migration beneath mid-ocean spreading centers, Geophys. Res. Lett. 14, 1238-1241, 1987.
39. C.C. Lundstrom, J. Gill, Q. Williams and M.R. Perfit, Mantle melting and basalt extraction by equilibrium porous flow, Science 270, 1958-1961, 1995.
40. K. Jha, E.M. Parmentier and J. Phipps Morgan, Effect of mantle-depletion and melt retention buoyancy in spreading-center segmentation, Earth Planet. Sci. Lett. 125, 221-234, 1994.
41. W.J. Morgan, Plate motions and deep mantle convection, GSA Mem. 132, 7-22, 1972.
42. D.T. Sandwell, W.H.F. Smith and M.M. Yale, ERS-1 Geodetic mission reveals detailed tectonic structures, EOS Trans. AGU 75, 155, 1994.
43. C. DeMets, R.G. Gordon, D.F. Argus and S. Stein, Effect of recent revisions to the geomagnetic reversal timescale on estimates of current plate motions, Geophys. Res. Lett. 21, 2191-2194, 1994.
44. R.D. Mueller, W.R. Roest, J.-Y. Royer, L.M. Gahagan and J.G. Sclater, A digital age map of the ocean floor, Scripps Inst. Oceanogr., La Jolla, CA, 1993.
45. U.S. ten Brink and T.M. Brocher, Multichannel seismic evidence for a subcrustal intrusive complex under Oahu and a model for Hawaiian volcanism, J. Geophys. Res. 92, 13,687-13,707, 1987.
46. D.W. Caress, M.K. McNutt, R.S. Detrick and J.C. Mutter, Seismic imaging of hotspot-related crustal underplating beneath the Marquesas Islands, Nature 373, 600-603, 1995.
47. J.B. Minster and T.H. Jordan, Present-day plate motions, J. Geophys. Res. 83, 5331-5354, 1978.
48. 30Ar geochronology of basement rocks from the Mascarene Plateau, the Chagos bank, and the Maldives Ridge, Proc. ODP 115, 43-52, 1987.
49. K. Jha, Ph.D. Thesis, Brown Univ., 1996.