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Sr, Nd, Hf and Pb isotope geochemistry of Early Miocene shoshonitic lavas from the South Fiji Basin: Note

January 28, 2021

We present new Sr, Nd, Hf and Pb isotope data for Early Miocene shoshonitic and high-K lavas dredged from seamounts in the South Fiji Basin, southwest Pacific Ocean. Our analyses provide a useful reference dataset for this distinctive compositional suite. The shoshonitic lavas formed in an intra-oceanic back-arc basin setting and are broadly coeval with nearby arc and back-arc basin lavas. Further work in the region will be needed before the tectonic implications of the shoshonitic and high-K lavas are fully understood.

Citation Information

Publication Year 2021
Title Sr, Nd, Hf and Pb isotope geochemistry of Early Miocene shoshonitic lavas from the South Fiji Basin: Note
DOI 10.1080/00288306.2021.1876110
Authors Nick Mortimer, Delphine Bosch, Christine Laporte-Magoni, Erin Todd, James B Gill
Publication Type Article
Publication Subtype Journal Article
Series Title New Zealand Journal of Geology and Geophysics
Series Number
Index ID 70217755
Record Source USGS Publications Warehouse
USGS Organization Alaska Science Center Geology Minerals

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