Experimental determination of C, F, and H partitioning between mantle minerals and carbonated basalt, CO 2 /Ba and CO 2 /Nb systematics of partial melting, and the CO 2 contents of basaltic source regions

To determine partitioning of C between upper mantle silicate minerals and basaltic melts, we executed 26 experiments between 0.8 and 3 GPa and 1250–1500 °C which yielded 37 mineral/glass pairs suitable for C analysis by secondary ion mass spectrometry (SIMS). To enhance detection limits, experiments were conducted with 13C-enriched bulk compositions. Independent measurements of 13C and 12C in coexisting phases produced two C partition...