87Sr/86Sr ratios for basalt from Loihi Seamount, Hawaii

Marvin A. Lanphere

doi:10.1016/0012-821x(83)90153-x

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87Sr/86Sr ratios for basalt from Loihi Seamount, Hawaii

Marvin A. Lanphere

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Abstract

87 Sr/ 86 Sr ratios of 15 samples of basalt dredged from Loihi Seamount range from 0.70334 to 0.70368. The basalt types range from tholeiite to basanite in composition and can be divided into six groups on the basis of abundances of K 2 O, Na 2 O, Rb and Sr and 87 Sr/ 86 Sr ratio. The isotopic data require that the various basalt types be derived from source regions differing in Sr isotopic composition. The Loihi basalts may be produced by mixing of isotopically distinct sources, but the tholeiites and alkalic basalts from Loihi do not show a well-developed inverse trend between Rb/Sr and 87 Sr/ 86 Sr that is characteristic of the later stages of Hawaiian volcanoes such as Haleakala and Koolau.

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Earth and Planetary Science Letters Article

Source-reported bounding extent: 18.070145820303548° to 18.932268511298073° latitude; -155.8355712890625° to -154.84405517578125° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Marvin A. Lanphere. 1983. 87Sr/86Sr ratios for basalt from Loihi Seamount, Hawaii. https://doi.org/10.1016/0012-821x(83)90153-x

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