Fig. 2: Mid-Atlantic Ridge latitudinal variations in peridotite composition.
From: Recycled arc mantle recovered from the Mid-Atlantic Ridge
a Olivine Mg# (molar Mg/(Mg + Fe2+)) along the Mid-Atlantic Ridge shows the anomalously refractory compositions present at the 14–17°N region. Additional data from 15°20′N FZ in Supplementary Data 4, previously unpublished. b Peridotite spinel Cr# (molar Cr/(Cr + Al)) extend to very high values (>55) between 14° and 17°N, atypical of anhydrous melting at mid-ocean ridge settings. Black data points for both plots from the literature23,42,71. Analytical uncertainties smaller than symbols.
