Fig. 6: Trace element and Ba isotope compositions in the South Sandwich Islands (SSI) arc lavas indicate breakdown of different minerals at subarc depths.
From: Mélange dehydration and melting beneath South Sandwich Islands arc
Barium isotope compositions plotted versus Ba/Th, U/Ba, and Sr/Nd for northern (A, C, E) and southern (B, D, F) parts of SSI arc lavas. Data sources for the DMM, AOC, and sediment components are the same as in Fig. 4. Also shown are source compositions (purple areas) calculated by similar contributions of sediment and AOC to the DMM as in Fig. 4 underneath the northern and southern parts of the SSI arc. Error bars associated with the δ138/134Ba values represent 2 standard deviations (SD) of sample reproducibility. Source data are provided as a Source Data file.
