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

A. R. Chivas*, A. S. Andrew, A. K. Sinha, J. R. O'Neil

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


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, δ 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.

Original languageEnglish
Pages (from-to)139-143
Number of pages5
Issue number5888
Publication statusPublished - 1982
Externally publishedYes


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