Water follows carbon: CO2 incites deep silicate melting and dehydration beneath mid-ocean ridges

Geology

Volumn 35, Issue 2, 2007, Pages 135-138

  Dasgupta, Rajdeep ^a,b   Hirschmann, Marc M ^a   Smith, Neil D ^a  

^a UNIVERSITY OF MINNESOTA   (United States)

^b Department of Earth and Environmental Sciences   (United States)

Author keywords

CO2; Dehydration; Lithosphere; Mantle volatiles; Mid oceanic ridge; Partial melting

Indexed keywords

LITHOSPHERE; MANTLE VOLATILES; MID-OCEANIC RIDGE; PARTIAL MELTING; GEOCHEMICAL SIGNATURES; MID OCEANIC RIDGES; MID-OCEANIC-RIDGE BASALTS; NOMINALLY ANHYDROUS MINERALS; OCEANIC LITHOSPHERE;

CARBON DIOXIDE; DEHYDRATION; IGNEOUS ROCKS; MELTING; SILICATE MINERALS; CARBONATION; SILICA; STRUCTURAL GEOLOGY; SUBMARINE GEOLOGY;

GEOLOGY; SILICATES;

DEHYDRATION; EXPERIMENTAL STUDY; MANTLE CHEMISTRY; MID-OCEAN RIDGE BASALT; OCEANIC LITHOSPHERE; PARTIAL MELTING; PERIDOTITE; SILICATE; BASALT; DEHYDRATION MELTING; LITHOSPHERE; MANTLE; MID-OCEAN RIDGE; UPPER MANTLE;

EID: 33846958775     PISSN: 00917613     EISSN: 00917613     Source Type: Journal    
DOI: 10.1130/G22856A.1     Document Type: Article

References (24)

1. Asimow, P.D., and Langmuir, C.H., 2003, The importance of water to oceanic mantle melting regimes: Nature, v. 421, p. 815-820, doi: 10.1038/ nature01429.
2. Aubaud, C., Hauri, E.H., and Hirschmann, M.M., 2004, Hydrogen partition coefficients between nominally anhydrous minerals and basaltic melts: Geophysical Research Letters, v. 31, p. L20611, doi: 10.1029/ 2004GL021341.
3. Bell, D.R., Rossman, G.R., Maldener, J., Endisch, D., and Rauch, F., 2003, Hydroxide in olivine: A quantitative determination of the absolute amount and calibration of the IR spectrum: Journal of Geophysical Research, v. 108, p. 2105, doi: 10.1029/200IJB000679.
4. Braun, M.G., Hirth, G., and Parmentier, E.M., 2000, The effects of deep damp melting on mantle flow and melt generation beneath mid-ocean ridges: Earth and Planetary Science Letters, v. 176, p. 339-356, doi: 10.1016/S0012-821X(00)00015-7.
5. Choblet, G., and Parmentier, E.M., 2001, Mantle upwelling and melting beneath slow spreading centers: Effects of variable rheology and melt productivity: Earth and Planetary Science Letters, v. 184, p. 589-604, doi: 10.1016/S0012-821X(00)00330-7.
6. Dasgupta, R., and Hirschmann, M.M., 2006, Melting in the Earth's deep upper mantle caused by carbon dioxide: Nature, v. 440, p. 659-662, doi: 10.1038/nature04612.
7. Dasgupta, R., Hirschmann, M.M., and Dellas, N., 2005, The effect of bulk composition on the solidus of carbonated eclogite from partial melting experiments at 3 GPa: Contributions to Mineralogy and Petrology, v. 149, p. 288-305, doi: 10.1007/s00410-004-0649-0.
8. Denbigh, K.G., 1981, The principles of chemical equilibrium: With applications in chemistry and chemical engineering: Cambridge, Cambridge University Press, 516 p.
9. Evans, R.L., Tarits, R, Chave, A.D., White, A., Heinson, G., Filloux, J.H., Toh, H., Seama, N., Utada, H., Booker, J.R., and Unsworth, M.J., 1999, Asymmetric electrical structure in the mantle beneath the east Pacific rise at 17 S: Science, v. 286, p. 752-756, doi: 10.1126/ science.286.5440.752.
10. Evans, R.L., Hirth, G., Baba, K., Forsyth, D., Chave, A., and Mackie, R., 2005, Geophysical evidence from the MELT area for compositional controls on oceanic plates: Nature, v. 437, p. 249-252, doi: 10.1038/ nature04014.
11. Forsyth, D.W., Webb, S.C., Dorman, L.M., and Shen, Y., 1998, Phase velocities of Rayleigh waves in the MELT experiment on the East Pacific Rise: Science, v. 280, p. 1235-1238, doi: 10.1126/science.280.5367.1235.
12. 2O undersaturated conditions: Earth and Planetary Science Letters, v. 248, p. 715-734, doi: 10.1016/j.epsl.2006.06.014.
13. 2 in alkali-basalt magma generation: Geophysical Research Letters, v. 24, p. 2837-2840, doi: 10.1029 /97GL02956.
14. Hirschmann, M.M., 2000, The mantle solidus: Experimental constraints and the effect of peridotite composition: Geochemistry, Geophysics, Geosystems, v. 1, p. 2000GC000070.
15. Hirschmann, M.M., Asimow, P.D., Ghiorso, M.S., and Stolper, E.M., 1999, Calculation of peridotite partial melting from thermodynamic models of minerals and melts. III. Controls on isobaric melt productivity and the effect of water on melt production: Journal of Petrology, v. 40, p. 831-851.
16. Hirth, G., and Kohlstedt, D.L., 1996, Water in the oceanic upper mantle: Implications for rheology, melt extraction and the evolution of the lithosphere: Earth and Planetary Science Letters, v. 144, p. 93-108, doi: 10.1016/0012821X(96)00154-9.
17. Katz, R.F., Spiegelman, M., and Langmuir, C.H., 2003, A new parameterization of hydrous mantle melting: Geochemistry, Geophysics, Geosystems, v. 4, p. 1073, doi: 10.1029/2002GC000433.
18. 2 fluxes from mid-ocean ridges, arcs and plumes: Chemical Geology, v. 145, p. 23 3-248, doi: 10.1016/S00092541(97)00145-9.
19. 2O in the suboceanic upper mantle: Implications for mantle metasomatism: Geochimica et Cosmochimica Acta, v. 52, p. 555-566, doi: 10.1016/0016-7037(88)90110-X.
20. 2 fluid in silicate liquid: American Mineralogist, v. 84, p. 477-492.
21. Salters, V.J.M., and Hart, S.R., 1989, The hafnium paradox and the role of garnet in the source of mid ocean ridge basalts: Nature, v. 342, p. 420-422, doi: 10.1038/342420a0.
22. Shcheka, S.S., Wiedenbeck, M., Frost, D.J., and Keppler, H., 2006, Carbon solubility in mantle minerals: Earth and Planetary Science Letters, v. 245, p. 730-742, doi: 10.1016/j.epsl.2006.03.036.
23. Walter, M.J., 1998, Melting of garnet peridotite and the origin of komatiite and depleted lithosphere: Journal of Petrology, v. 39, p. 29-60, doi: 10.1093/petrology/39.1.29.
24. 2 as a function of degree of partial melting at 15 and 30 kbar: American Mineralogist, v. 65, p. 37-44.