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Geochemical map of sample S81/16 (stratigraphic height 41.8 m) created using QEMSCAN. The olivine grains are graded from relatively Mg-rich (blue) through dark green to pale green [the full range of compositions is ~Fo73−60, by comparison with Gibb and Henderson (1996)]. Fe-Ti oxides are shown as red, plagioclase is dark speckled grey while augite is mid-grey. Grain boundaries in the olivine clusters are drawn as white lines. Scale bar is 2 mm long
