Subduction origin of the Nb anomaly in Earth’s oldest continents_supplementary_dataset

Supplementary data from Subduction origin of the Nb anomaly in Earth’s oldest continents, Journal of Petrology, 2025. Data is major and trace element compositional data from piston cylinder high-pressure high-temperature experiments on partially melted hydrated Icelandic basalt. Major element mineral chemistry for plagioclase, amphibole, clinopyroxene, orthopyroxene, FeTi oxides and garnet. Major and trace element compositions from silicic partial melt fractions.