K/Rb and (Sr/Sr)0 ratios of dredged submarine basalts |
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| Authors: | Minoru OzimaShigeo Zashu |
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| Institution: | Geophysical Institute, University of TokyoJapan; Natural Science Laboratory, Tokyo UniversityJapan |
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| Abstract: | K/Rb and (87Sr/86Sr)0 ratios were measured for 14 submarine basalts dredged from seamounts in the Pacific Ocean. The K/Rb ranges from 200 to 700, which is significantly lower than that of oceanic ridge tholeiites. Petrographic examination and the low value of K/Rb indicate that seamount basalts are alkaline. |
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