Table 1 Nd isotopic composition (εNd) and selected Post-Archean Australian Shale (PAAS) normalized Rare Earth Elements (REEs) ratios of different external sources for the South Pacific Gyre

From: Substantial trace metal input from the 2022 Hunga Tonga-Hunga Ha’apai eruption into the South Pacific

External sources

εNd

PAAS normalized Ce anomaly (Ce/Ce*PAAS)

PAAS normalized heavy REE enrichment relative to light REE (HREE/LREEPAAS)

2×CePAAS/(LaPAAS+PrPAAS)

(YbPAAS+LuPAAS)/(PrPAAS+NdPAAS)

Volcanogenic material (represented by the pumice)

+7.5 ± 0.2

0.89 ± 0.02

7.06 ± 0.47

Australian dust

−29 to +243

0.92 to 181,82

0.94 to 1.1581,82

Basaltic volcanic islands

0 to +1039

0.9740

0.6540

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