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Science 9 September 1966:
Vol. 153. no. 3741, pp. 1239 - 1242
DOI: 10.1126/science.153.3741.1239
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Articles

Isotopic Composition of Strontium in Volcanic Rocks from Oahu

J. L. Powell 1 and Stephen E. Delong 1

1 Department of Geology, Oberlin College, Oberlin, Ohio

Analysis of several well-documented specimens from each of the three volcanic series on Oahu gives the following mean ratios of Sr87 to Sr86: the Waianae series, 0.7030 ± 0.00010 (sgr); the Koolau series, 0.70385± 0.00009 (sgr); and the Honolulu series, 0.7029 +± 0.00006 ( sgr). The mean ratio of Sr87 to Sr86 of the Koolau series specimens is significantly higher than the means of the other two series. With one exception, significant differences in Sr87/ Sr86 within a series were not found, even though some large compositional differences existed.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)