Melt aggregation within the crust beneath the Mid-Atlantic Ridge: Evidence from plagioclase and clinopyroxene major and trace element compositions

Earth and Planetary Science Letters

Volumn 176, Issue 2, 2000, Pages 245-257

  Coogan, Laurence A ^a   Kempton, Pamela D ^b   Saunders, Andrew D ^c   Norry, Michael J ^c  

^a CARDIFF UNIVERSITY   (United Kingdom)

^b NATURAL ENVIRONMENT RESEARCH COUNCIL   (United Kingdom)

^c UNIVERSITY OF LEICESTER   (United Kingdom)

Author keywords

Leg 153; Magma transport; Magmatic differentiation; Melts; Mid Atlantic Ridge; Trace elements

Indexed keywords

AGGREGATION; DIFFERENTIATION; MELT; MID-OCEAN RIDGE; MID-OCEAN RIDGE BASALT;

EID: 0034089380     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(00)00006-6     Document Type: Article

References (53)

1. Klein E.M., Langmuir C.H. Global correlation of ocean ridge basalt chemistry with axial depth and crustal thickness. J. Geophys. Res. 92:1987;8089-8115.
2. Johnson K.T.M., Dick H.J.B., Shimizu N. Melting in the oceanic upper mantle: An ion-microprobe study of diopsides in abyssal peridotites. J. Geophys. Res. 95:1990;2661-2678.
3. Sobolev A.V., Shimizu N. Ultra-depleted primary melt inclusions in an olivine from the Mid-Atlantic Ridge. Nature. 363:1993;151-154.
4. Wood D.A. A variably veined suboceanic upper mantle - Genetic significance for mid-ocean ridge basalts from geochemical evidence. Geology. 7:1979;499-503.
5. LaTourette T.Z., Kennedy A.K., Wasserburg G.J. Thorium-uranium fractionation by garnet evidence for a deep source and rapid rise of oceanic basalts. Science. 261:1993;739-742.
6. O'Hara M.J. Trace-element geochemical effects of integrated melt extraction and shaped melting regimes. J. Petrol. 36:1995;1111-1132.
7. Niu Y., Batiza R. Chemical variation trends at fast and slow spreading mid-ocean ridges. J. Geophys. Res. 98:1993;7887-7902.
8. T.L. Grove, R.J. Kinzler and W.B. Bryan, Fractionation of Mid-Ocean Ridge Basalt (MORB), in: J. Phipps-Morgan, D.K. Blackman and J.M. Sinton (Eds.), Mantle Flow and Melt Generation at Mid-Ocean Ridges, American Geophysical Union, 1992, pp. 281-311.
9. Sinton C.W., Christie D.M., Coombs V.L., Nielsen R.L., Fisk M.R. Near-primary melt inclusions in anorthite phenocrysts from the Galapagos Platform. Earth Planet. Sci. Lett. 119:1993;527-537.
10. Nielsen R.L. Melt inclusions in high-An plagioclase from the Gorda Ridge: an example of the local diversity of MORB parental magmas. Contrib. Mineral. Petrol. 122:1995;34-50.
11. Nielsen R.L., Michael P.J., Sours-Page R. Chemical and physical indicators of compromised melt inclusions. Geochim. Cosmochim. Acta. 62:1998;831-839.
12. Sours-Page R., Johnson K.T.M., Nielsen R.L., Karsten J.L. Local and regional variation in MORB parental magmas: evidence from melt inclusions from the Endeavor Segment of the Juan de Fuca Ridge. Contrib. Mineral. Petrol. 134:1999;342-363.
13. Stolper E. A phase diagram for Mid-Ocean Ridge Basalts: preliminary results and implications for petrogenesis. Contrib. Mineral. Petrol. 74:1980;13-27.
14. Spiegelman M., Kenyon P. The requirements for chemical disequilibrium during magma migration. Earth Planet. Sci. Lett. 109:1992;611-620.
15. Kelemen P.B., Shimizu N., Salters V.J.M. Extraction of mid-ocean-ridge basalt from the upwelling mantle by focused flow of melt in dunite channels. Nature. 375:1995;747-753.
16. Niu Y. Mantle melting and melt extraction processes beneath ocean ridges: evidence from abyssal peridotites. J. Petrol. 38:1997;1047-1074.
17. H.J.B. Dick, Abyssal peridotites, very slow spreading ridges and ocean ridge magmatism, in: A.D. Saunders and M.J. Norry (Eds.), Magmatism in the Ocean Basins, Blackwell, Oxford, 1989, pp. 71-106.
18. Hinton R.W. Ion microprobe trace-element analysis of silicates: measurement of multi-element glasses. Chem. Geol. 83:1990;11-25.
19. M. Cannat, J.A. Karson, D.J. Miller et al., Proc. ODP Initial Reports, Leg 153, Ocean Drilling Program, College station, TX, 1995, p. 798.
20. Bryan W.B., Thompson G., Ludden J.N. Compositional variation in Normal MORB from 22°-25°N Mid-Atlantic Ridge and Kane Fracture Zone. J. Geophys. Res. 86:1981;11815-11836.
21. Reynolds J.R., Langmuir C.H. Petrological systematics of the Mid-Atlantic Ridge south of Kane: Implications for ocean crust formation. J. Geophys. Res. 102:1997;14915-14946.
22. Ghose I., Cannat M., Seyler M. Transform fault effect on mantle melting in the MARK area (Mid-Atlantic Ridge south of the Kane Transform). Geology. 24:1996;1139-1142.
23. K. Ross and D. Elthon, Cumulus and postcumulus crystallisation in the oceanic crust: Major and trace-element geochemistry of Leg 153 Gabbroic rocks, in: J.A. Karson, M. Cannat, D.J. Miller et al. (Eds.), Proc. Sci. Res. ODP Leg 153, Ocean Drilling Program, College station, TX, 1997, pp. 333-353.
24. L.A. Coogan, Magma plumbing beneath the Mid-Atlantic Ridge, Unpub. Ph.D. thesis, University of Leicester, 1998.
25. P.D. Kempton and A. Hunter, A Sr-, Nd-, Pb-, O-isotope study of plutonic rocks from MARK, Leg 153: implications for mantle heterogeneity and magma chamber processes, in: J.A. Karson, M. Cannat, D.J. Miller et al. (Eds.), Proc. Sci. Res. ODP Leg 153, Ocean Drilling Program, College station, TX, 1997, pp. 305-320.
26. Shannon R.D. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Cryst. A32:1976;751-767.
27. K. Niida, Mineralogy of MARK peridotites: replacement through magma channeling examined from Hole 920D, MARK AREA, in: J.A. Karson, M. Cannat, D.J. Miller et al. (Eds.), Proc. Sci. Res. ODP Leg 153, Ocean Drilling Program, College station, TX, 1997, pp. 265-275.
28. C.J. Stephens, Heterogeneity of oceanic peridotite from the western canyon wall at MARK: Results from Site 920, in: J.A. Karson, M. Cannat, D.J. Miller et al. (Eds.), Proc. Sci. Res. ODP Leg 153, Ocean Drilling Program, College station, TX, 1997, pp. 285-33.
29. Grove T.L., Bryan W.B. Fractionation of pyroxene-phyric MORB at low pressure: An experimental study. Contrib. Mineral. Petrol. 84:1983;293-309.
30. Tormey D.R., Grove T.L., Bryan W.B. Experimental petrology of N-MORB near the Kane Fracture Zone: 22-25°N, Mid-Atlantic ridge. Contrib. Mineral. Petrol. 96:1987;121-139.
31. O'Hara M.J. Geochemical evolution during fractional crystallization of a periodically refilled magma chamber. Nature. 266:1977;503-507.
32. Langmuir C.H. Geochemical consequences of in situ differentiation. Nature. 340:1989;199-205.
33. Elthon D., Stewart M., Ross D.K. Compositional trends of minerals in oceanic cumulates. J. Geophys. Res. 979:1992;15189-15199.
34. Nielsen R.L. A model for the simulation of combined major and trace element liquid lines of descent. Geochim. Cosmochim. Acta. 52:1988;27-38.
35. Ghiorso M.S., Sack R.O. Chemical mass transfer in magmatic processes IV. Arevised and internally consistent thermodynamic model for the interpolations of liquid-solid equilibria in magmatic systems at elevated temperatures and pressures. Contrib. Mineral. Petrol. 119:1995;197-212.
36. Kamenetsky V.S., Eggins S.M., Crawford A.J., Green D.H., Gasparon M., Falloon T.J. Calcic melt inclusions in primitive olivine at 43°N MAR: evidence for melt-rock reaction involving clinopyroxene-rich lithologies during MORB generation. Earth Planet. Sci. Lett. 160:1998;115-132.
37. Sobolev A.V. Melt inclusions in minerals as a source of principle petrological information. Petrology. 4:1996;209-220.
38. Donaldson C.H., Brown R.W. Refractory megacrysts and magnesium-rich melt inclusions within spinel in oceanic tholeiites: indicators of magma mixing and parental magma compositions. Earth Planet. Sci. Lett. 37:1977;81-89.
39. Walker D., Shibata T., DeLong S.E. Abyssal tholeiites from the Oceanographer Fracture Zone. Contrib. Mineral. Petrol. 70:1979;111-125.
40. Watson E.B. Surface enrichment and trace-element uptake during crystal growth. Geochim. Cosmochim. Acta. 60:1996;5013-5060.
41. Giletti B.J., Casserly J.E.D. Strontium diffusion kinetics in plagioclase feldspars. Geochim. Cosmochim. Acta. 58:1994;3785-3793.
42. Blundy J.D., Wood B.J. Prediction of crystal-melt partition coefficients from elastic moduli. Nature. 372:1994;452-454.
43. Wood B.J., Blundy J.D. A predictive model for rare earth element partitioning between clinopyroxene and anhydrous silicate melt. Contrib. Mineral. Petrol. 129:1997;166-181.
44. Forsythe L.M., Nielsen R.L., Fisk M.R. High field strength element partitioning between pyroxene and basaltic to dacitic magmas. Chem. Geol. 117:1994;107-125.
45. Ross K., Elthon D. Cumulates from strongly depleted mid-ocean-ridge basalt. Nature. 365:1993;826-828.
46. Girardeau J., Francheteau J. Plagioclase-wehrlites and peridotites on the East Pacific Rise (Hess Deep) and the Mid-Atlantic Ridge (DSDP Site 334): evidence for magma percolation in the oceanic upper mantle. Earth Planet. Sci. Lett. 115:1993;137-149.
47. Sobolev A.V., Shimizu N. The origin of typical N-MORB: The evidence from a melt inclusion study. Min. Mag. 58A:1994;862-863.
48. Baker M.B., Hirschmann M.M., Ghiorso M.S., Stolper E.M. Composition of near-solidus peridotite melts from experiments and thermodynamic calculations. Nature. 375:1995;308-311.
49. Kelemen P.B., Johnson K.T.M., Kinzler R.J., Irving A.J. High-field-strength element depletions in arc basalts due to mantle-magma interaction. Nature. 345:1990;521-523.
50. Lesher C.E. Effects of Silicate liquid composition on mineral-liquid element partitioning from soret diffusion studies. J. Geophys. Res. 91:1986;6123-6141.
51. Anders E., Grevasse N. Abundances of the elements: Meteoric and solar. Geochim. Cosmochim. Acta. 53:1989;197-214.
52. Blundy J. Experimental study of a Kiplapait marginal rock and implications for trace element partitioning in layered intrusions. Chem. Geol. 141:1997;73-92.
53. Hack P.J., Nielsen R.L., Johnston A.D. Experimentally determined rare-earth partitioning behavior between clinopyroxene and basaltic liquids at pressures up to 20 kbar. Chem. Geol. 117:1994;89-105.