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Geochemistry of a Pliocene-Pleistocene oceanic-arc plutonic complex, Guadalcanal

A.R. Chivas·A.S. Andrew·A.K. Sinha·J. R. O’Neil
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Abstract

The Koloula Igneous Complex, on the island of Guadalcanal, consists of a low-K calc-alkaline sequence of 26 different intrusive phases. The major intrusions are characterized by K/Rb>400, Rb/Sr<0.06, ?? 18O of 5.7 to 7.2 and uniform 87Sr/86Sr of 0.70372. This article presents the first data describing oxygen and strontium isotopic behaviour within a plutonic suite that formed by crystal fractionation. ?? 1982 Nature Publishing Group.

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A.R. Chivas, A.S. Andrew, A.K. Sinha, J. R. O’Neil. 1982. Geochemistry of a Pliocene-Pleistocene oceanic-arc plutonic complex, Guadalcanal. https://doi.org/10.1038/300139a0

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