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

Earth and Planetary Science Letters

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Abstract

87Sr 86Sr 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 K2O, Na2O, Rb and Sr and 87Sr 86Sr 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 87Sr 86Sr that is characteristic of the later stages of Hawaiian volcanoes such as Haleakala and Koolau. ?? 1983.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
87Sr 86Sr ratios for basalt from Loihi Seamount, Hawaii
Series title:
Earth and Planetary Science Letters
Volume
66
Issue:
C
Year Published:
1983
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
380
Last page:
387
Number of Pages:
8