Composition of liquids coexisting with spinel lherzolite at 10 kbar and the genesis of MORBs
作者： Toshitsugu Fujii , Christopher M. Scarfe
DOI: 10.1007/BF00373037
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摘要: Because of the controversy over nature parental magma for MORBs, experiments have been performed at 10 kbar in order to assess effect modal variations source peridotite and temperature (degree partial melting) on composition melts. A peridotite-basalt sandwich method was used a run duration 72 h found be necessary equilibrate basalt peridotite. range melt compositions, coexisting with olivine, orthopyroxene, clinopyroxene spinel, produced kbar, indicating that melting cannot regarded as isobarically pseudoinvariant. On projections normative tetrahedron OL-PL-CPX-SIL, liquids obtained this study define an area, rather than point or narrow band. The compositions some are similar magnesian MORBs (MgO>9.5 wt%), providing evidence support derivation by mantle lherzolite about kbar.
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sci-hub.se 参考文章(47)
H. S. Yoder, Generation of basaltic magma ,(1976)
Tsugio Shibata, Stephen E. DeLong, David Walker, Abyssal tholeiites from the Oceanographer Fracture Zone Contributions to Mineralogy and Petrology. ,vol. 70, pp. 89- 102 ,(1979) , 10.1007/BF00371875
B. O. Mysen, I. Kushiro, Compositional variations of coexisting phases with degree of melting of peridotite in the upper mantle American Mineralogist. ,vol. 62, pp. 843- 856 ,(1977)
Eiichi Takahashi, Ikuo Kushiro, Melting of a dry peridotite at high pressures and basalt magma genesis American Mineralogist. ,vol. 68, pp. 859- 879 ,(1983)
W. B. BRYAN, JAMES G. MOORE, Compositional variations of young basalts in the Mid-Atlantic Ridge rift valley near lat 36°49′N Geological Society of America Bulletin. ,vol. 88, pp. 556- 570 ,(1977) , 10.1130/0016-7606(1977)88<556:CVOYBI>2.0.CO;2
H.G. Wilshire, J.W. Shervais, AL–AUGITE AND CR–DIOPSIDE ULTRAMAFIC XENOLITHS IN BASALTIC ROCKS FROM WESTERN UNITED STATES Physics and Chemistry of The Earth. ,vol. 9, pp. 257- 272 ,(1975) , 10.1016/0079-1946(75)90021-X
E.Bruce Watson, Calcium diffusion in a simple silicate melt to 30 kbar Geochimica et Cosmochimica Acta. ,vol. 43, pp. 313- 322 ,(1979) , 10.1016/0016-7037(79)90197-2
Ikuo Kushiro, Compositions of magmas formed by partial zone melting of the Earth's upper mantle Journal of Geophysical Research. ,vol. 73, pp. 619- 634 ,(1968) , 10.1029/JB073I002P00619
Emi Ito, David M Harris, Alfred T Anderson, Alteration of oceanic crust and geologic cycling of chlorine and water Geochimica et Cosmochimica Acta. ,vol. 47, pp. 1613- 1624 ,(1983) , 10.1016/0016-7037(83)90188-6
Sydney P. Clark, Effect of Pressure on the Melting Points of Eight Alkali Halides The Journal of Chemical Physics. ,vol. 31, pp. 1526- 1531 ,(1959) , 10.1063/1.1730648