Figure F6. AFM diagram for data from Leg 170 and 205 Subunits 4A and 4B showing the Fe-enrichment trend typical of ocean-floor tholeiites. Subunits 4A and 4B are grouped for clarity. A = N2O + K2O; F = total Fe as FeO; M = MgO.

Figure F6. AFM diagram for data from Leg 170 and 205 Subunits 4A and 4B showing the Fe-enrichment trend typical of ocean-floor tholeiites. Subunits 4A and 4B are grouped for clarity. A = N₂O + K₂O; F = total Fe as FeO; M = MgO.