Depths of partial crystallization of H2O-bearing MORB: Phase equilibria simulations of basalts at the MAR near Ascension Island (7-11°S)

Journal of Petrology

Volumn 49, Issue 1, 2008, Pages 25-45

  Almeev, Renat ^a   Holtz, François ^a   Koepke, Jürgen ^a   Haase, Karsten ^b   Devey, Colin ^c  

^a LEIBNIZ UNIVERSITY HANNOVER   (Germany)

^b AARHUS UNIVERSITY   (Denmark)

^c GEOMAR HELMHOLTZ CENTRE FOR OCEAN RESEARCH KIEL   (Germany)

Author keywords

Cotectic crystallization; Depth of crystallization; Mid Atlantic Ridge; MORB; Phase equilibria calculations; Polybaric fractionation; Pressure estimates; Water abundances

Indexed keywords

CRYSTALLIZATION; MAGMA; MELT INCLUSION; MID-OCEAN RIDGE BASALT; PHASE EQUILIBRIUM; WATER CONTENT;

ASCENSION ISLAND; ATLANTIC ISLANDS; ATLANTIC OCEAN; MID-ATLANTIC RIDGE;

EID: 37449022346     PISSN: 00223530     EISSN: 14602415     Source Type: Journal    
DOI: 10.1093/petrology/egm068     Document Type: Article

References (54)

1. Almeev, R. R. & Ariskin, A. A. (1996). Mineral-melt equilibria in a hydrous basaltic system: Computer modeling. Geochemistry International 34, 563-573.
2. Almeev, R. R., Ariskin, A. A. & Pletchov P. Yu. (2004). Calculations of mineral-melt equilibria in tholeiitic system: MELTS versus COMAGMAT. Lithos 73, 1-2:SL.
3. Ariskin, A. A. (1999). Phase equilibria modeling in igneous petrology: use of COMAGMAT model for simulating fractionation of ferro-basaltic magmas and the genesis of high-alumina basalt. Journal of Volcanology and Geothermal Research 90, 115-162.
4. Ariskin, A. A. & Barmina, G. S. (2004). COMAGMAT: Development of a magma crystallization model and its petrological applications. Geochemistry International 42, S1-S157.
5. Ariskin, A. A., Tsekhonya, T. I. & Frenkel, M. Y. (1992). Computerized barometry and genetic interpretation of Central Atlantic basalt glasses. Geochemistry International 29, 117-125.
6. Ariskin, A. A., Frenkel, M. Y., Barmina, G. S. & Nielsen, R. L. (1993). COMAGMAT: A Fortran program to model magma differentiation processes. Computers and Geosciences 19, 1155-1170.
7. Asimow, P. D., Dixon, J. E. & Langmuir, C. H. (2004). A hydrous melting and fractionation model for mid-ocean ridge basalts: Application to the Mid-Atlantic Ridge near the Azores. Geochemistry, Geophysics, Geosystems 5, Q01E16, doi:10.1029/2003GC000568.
8. Bender, J. F., Hodges, F. N. & Bence, A. E. (1978). Petrogenesis of basalts from the project Famous Area: Experimental study from 0 to 15 kbars. Earth and Planetary Science Letters 41, 277-302.
9. Berndt, J., Koepke, J. & Holtz, F. (2005). An experimental investigation of the influence of water and oxygen fogacity on differentiation of MORB at 200 MPa. Journal of Petrology 46, 135-167.
10. 3+/Fe ratios of MORB glasses and their implications for mantle melting. Geochimica et Cosmochimica Acta 69, 711-725.
11. Bourdon, E. & Hemond, C. (2001). Looking for the 'missing endmember' in South Atlantic Ocean mantle around Ascension Island. Mineralogy and Petrology 71, 127-138.
12. Bruguier, N. J., Minshull, T. A. & Brozena, J. M. (2003). Morphology and tectonics of the Mid-Atlantic Ridge, 7°-12°S. Journal of Geophysical Research 108, doi:10.1029/2001JB001172.
13. 2O on crystallisation of mid-ocean ridge and backarc basin magmas. Journal of Volcanology and Geothermal Research 110, 265-280.
14. 2O content of MORB and BABB glasses: Calibration of an empirical technique. Mineralogy and Petrology 57, 185-204.
15. Dmitriev, L. V. (1998). Chemical variability of mid-ocean ridge basalts as a function of the geodynamic setting of their formation. Petrology 6, 314-334.
16. Fisk, M. R. & Bence, A. E. (1980). Experimental crystallization of chrome spinel in FAMOUS basalt 527-1-1. Earth and Planetary Science Letters 48, 111-123.
17. Fisk, M. R., Schilling, J. G. & Sigurdsson, H. (1980). An experimental investigation of Iceland and Reykjanes ridge tholeiites: I. Phase relations. Contributions to Mineralogy and Petrology 74, 361-374.
18. Fontignie, D. & Schilling, J. G. (1996). Mantle heterogeneities beneath the South Atlantic: A Nd-Sr-Pb isotope study along the Mid-Atlantic Ridge (3°S-46°S). Earth and Planetary Science Letters 142, 209-221.
19. Freise, M. (2004). Differenzierung von Basalten einer 'Large Igneous Province'am Beispiel des Kerguelen Plateaus: Eine experimentelle Studie. PhD thesis, Leibniz University, Hannover, 105 pp.
20. Fujii, T. & Bougault, H. (1983). Melting relations of a magnesian abyssal tholeiite and the origin of MORBs. Earth and Planetary Science Letters 62, 283-295.
21. Fujii, T. & Scarfe, C. M. (1985). Composition of liquids coexisting with spinel lherzolite at 10 kbar and the genesis of MORBs. Contributions to Mineralogy and Petrology 90, 18-28.
22. Gaetani, G. A., Grove, T. L. & Bryan, W. B. (1994). Experimental phase relations of basaltic anclesite from hole 839B under hydrous and anhydrous conditions.: Hawkins, J., Parson, L. & Allan, J. (eds) Proceedings of the Ocean Drilling Program, Scientific Results, 135. College Station, TX: Ocean Drilling Program, pp. 557-565.
23. Graham, D. W., Jenkins, W. J., Schilling, J.-G., Thompson, G., Kurz, M. D. & Humphris, S. E. (1992). Helium isotope geochemistry of mid-ocean ridge basalts from the South Atlantic. Earth and Planetary Science Letters 110, 133-147.
24. Grove, T. L. & Bryan, W. B. (1983). Fractionation of pyroxene-phyric MORB at low pressure: An experimental study. Contributions to Mineralogy and Petrology 84, 293-309.
25. Grove, T. L., Kinzler, R. J. & Bryan, W. B. (1990). Natural and experimental phase relations of lavas from Serocki Volcano. In: Detrick, R., Honnorez, J., et al. (eds) Proceedings of the Ocean Drilling Program, Scientific Results, 106/109. College Station, TX: Ocean Drilling Program, pp. 9-17.
26. Grove, T. L., Kinzler, R. J. & Bryan, W. B. (1992). Fractionation of mid-ocean ridge basalt (MORB). In: Morgan, J., Blackman, D. & Sinton, J. (eds) Mantle Flow and Melt Generation at Mid-Ocean Ridges. Geophysical Monograph, American Geophysical Union 71, 281-310.
27. Hanan, B. B., Kingsley, R. H. & Schilling, J. G. (1986). Pb isotope evidence in the South Atlantic for migrating ridge-hotspot interactions. Nature 322, 137-144.
28. Herzberg, C. (2004). Partial crystallization of mid-ocean ridge basalts in the crust and mantle. Journal of Petrology 45, 2389-2405.
29. Hirschmann, M. M., Baker, M. B. & Stolper, E. (1998). The effect of alkalis on the silica content of mantle-derived melts. Geochimica et Cosmochimica Acta 62, 883-902.
30. Holtz, F., Becker, A., Freise, M. & Johannes, W. (2001). The water-undersaturated nd dry Qz-Ab-Or system revisited. Experimental results at very low water activities and geological implications. Contributions to Mineralogy and Petrology 141, 347-357.
31. Juster, T C., Grove, T. L. & Perfit, M. R. (1989). Experimental constraints on the generation of Fe-Ti basalts, andesites, and rhyodacites at the Galapagos spreading center, 85°W, and 95°W. Journal of Geophysical Research 94, 9251-9274.
32. 2 conditions of natural calc-alkaline magmas. American Mineralogist 90, 708-717.
33. Kinzler, R. J. & Grove, T. L. (1992). Primary magmas of mid-ocean ridge basalts. 1. Experiments and methods. Journal of Geophysical Research 97, 6885-6906.
34. Langmuir, C. H., Klein, E. & Plank, T (1992). Petrological systematics of mid-ocean ridge basalts: Constraints on melt generation beneath ocean ridges. In: Morgan, J., Blackman, D. & Sinton, J. (eds Mantle Flow and Melt Generation at Mid-Ocean Ridges. Geophysical Monograph, American Geophysical Union 71, 183-277.
35. 2O. Earth and Planetary Science Letters 131, 301-320.
36. 2O and pressure on mid-ocean ridge basalt differentiation. Contributions to Mineralogy and Petrology 96 245-263.
37. Michael, P. J. & Cornell, W. C. (1998). Influence of spreading rate and magma supply on crystallization and assimilation beneath mid-ocean ridges: Evidence from chlorine and major element chemistry of mid-ocean ridge basalts. Journal of Geophysical Research 103, 18325-18356.
38. Minshull, T. A., Bruguier, N.J. & Brozena, J. M. (1998). Ridge-plume interactions or mantle heterogeneity near Ascension Island? Geology 26, 115-118.
39. Minshull, T. A., Bruguier, N. J. & Brozena, J. M. (2003). Seismic structure of the Mid-Atlantic Ridge, 8-9°S. Journal of Geophysical Research 108(B11), 2513, doi:10.1029/2002JB002360.
40. Moeller, H. (2002). Magma genesis and mantle sources at the Mid-Atlantic Ridge east of Ascension Island. PhD thesis, Christian-Albrechts Universität, Kiel, 149 pp.
41. Myers, J. D. & Johnston, A. D. (1996). Phase equilibria constraints on models of subduction zone magmatism (overview). In: Bébout, G. E. (ed.) Subduction. Top to Bottom. Geophysical Monograph, American Geophysical Union 96, 229-251.
42. Schilling, J. G., Thompson, G., Kingsley, R. & Humphris, S. (1985). Hotspot-migrating ridge interaction in the South Atlantic. Nature 313, 187-191.
43. Shen, Y. & Forsyth, D. W. (1995). Geochemical constraints on initial and final depths of melting beneath midocean ridges. Journal of Geophysical Research - Solid Earth 100, 2211-2237.
44. 2O in calc-alkaline differentiation and subduction zone magmatism. Contributions to Mineralogy and Petrology 113, 143-166.
45. Stolper, E. M. (1980). A phase diagram for mid-ocean ridge basalts: preliminary results and implications for petrogenesis. Contributions to Mineralogy and Petrology 74, 13-27.
46. Stolper, E. (1982). Water in silicate glasses: An infrared spectroscopic study. Contributions to Mineralogy and Petrology 81 1-17.
47. Toplis, M. J. & Carroll, M. R. (1995). An experimental study of the influence of oxygen fugacity on Fe-Ti oxide stability, phase relations, and mineral-melt equilibria in ferro-basaltic systems. Journal of Petrology 36, 1137-1170.
48. Thy, P. & Lofgren, G. E. (1994). Experimental constraints on the low-pressure evolution of transitional and mildly alkalic basalts: The effect of Fe-Ti oxide minerals and the origin of basaltic andesites. Contributions to Mineralogy and Petrology 116, 340-351.
49. Thy, P., Lesher, C. E. & Fram, M. S. (1998). Low-pressure experimental constraints on the evolution of basaltic lavas from site 917, southeast Greenland continental margin. In: Saunders, A. D., Larsen, H. C. & Wise, S. W., Jr (eds) Proceedings of the Ocean Drilling Program, Scientific Results, 152. College Station, TX: Ocean Drilling Program, pp. 359-372.
50. Thy, P., Lesher, C. E. & Mayfield, J. D. (1999). Low-pressure melting studies of basalt and basaltic andesite from the southeast Greenland continental margin and the origin of dacites at site 917. In: Larsen, H. C., Duncan, R. A., Allan, J. F., Brooks, K., et al. (eds) Proceedings of the Ocean Drilling Program, Scientific Results, 163. College Station, TX: Ocean Drilling Program, pp. 95-112.
51. Tormey, D. R., Grove, T. L. & Bryan, W. B. (1987). Experimental petrology of normal MORB near the Kane Fracture Zone: 22°-25°N, mid-Atlantic ridge. Contributions to Mineralogy and Petrology 96, 121-139.
52. Villiger, S., Ulmer, P. & Muntener, O. (2007). Crystallization of MORB in the mantle: Implications from major element variations of glasses from equilibrium and fractional crystallization experiments. Journal of Geophysical Research, Solid Earth 112, B01202, doi:10.1029/ 2006JB004342.
53. Walker, D., Shibata, T. & DeLong, S. E. (1979). Abyssal tholeiites from the Oceanographer Fracture Zone II. Phase equilibria and mixing. Contributions to Mineralogy and Petrology 70, 111-125.
54. Yang, H.-J., Kinzler, R. J. & Grove, T. L. (1996). Experiments and models of anhydrous, basaltic olivine-plagioclase-augite saturated melts from 0.001 to 10 kbar. Contributions to Mineralogy and Petrology 124, 1963-1973.