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 | 2022 |
|---|---|
| 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 |
| Index ID | 70217755 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Alaska Science Center Geology Minerals |