Figure F236. Mg# (100 × molar Mg/[Mg + Fe]) versus Ca# (100 × molar Ca/[Ca + Na]). Compositional fields of rocks from other locations at the Mid-Atlantic Ridge (MAR) (Leg 153; Casey, 1997), including Leg 209 (Kelemen, Kikawa, Miller, et al., 2004), and the Southwest Indian Ridge (SWIR) (Hole 735B; Dick et al., 2000) are shown for comparison.
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