Rare earth abundances and Rb-Sr systematics of basalts, gabbro, anorthosite and minor granitic rocks from the Indian Ocean Ridge System, Western Indian Ocean

Hedge, C. E.; Futa, K.; Engel, C. G.; Fisher, R. L.

Abstract:

Basalts dredged from the Mid-Indian Ocean Ridge System have rare earth, Rb, and Sr concentrations like those from other mid-ocean ridges, but have slightly higher Sr87/Sr86 ratios. Underlying gabbroic complexes are similar to the basalts in Sr87/Sr86, but are poorer K, Rb, and in rare earths. The chemical and isotopic data, as well as the geologic relations suggest a cumulate origin for the bulk of the gabbroic complexes. ?? 1979 Springer-Verlag.

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Article

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70012453

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Hedge, C. E.; Futa, K.; Engel, C. G.; Fisher, R. L.

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376

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English

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Contributions to Mineralogy and Petrology

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Rare earth abundances and Rb-Sr systematics of basalts, gabbro, anorthosite and minor granitic rocks from the Indian Ocean Ridge System, Western Indian Ocean; 1979; Article; Journal; Contributions to Mineralogy and Petrology; Hedge, C. E.; Futa, K.; Engel, C. G.; Fisher, R. L.