Figure 3. Variation diagrams for major oxides in basalts vs. the fractionation
coefficient FeO/MgO. Dashed arrows depict differentiation trends.
Symbols (basalts from): 1 - Bogdanov FZ, 2 - Near-FZ domain, 3 - Northern
domain, 4 - "Ore'' survey area, 5 - 1st Southern domain, 6 - Markov Basin,
7 - 2nd Southern domain, 8 - 3rd Southern domain, 9 - Southwest domain.