Figure F8. Tectono-magmatic discrimination ternary diagram SiO2/100-TiO2-Na2O for clinopyroxene (cpx) (simplified after Beccaluva et al., 1989), showing the chemical variability of clinopyroxene of Site 1201 basalts. Early = phenocryst cores; late = phenocryst rims, microphenocrysts, and microlites. MORB = mid-ocean-ridge basalt; IAT = island-arc tholeiite; BON = boninite.

Figure F8. Tectono-magmatic discrimination ternary diagram SiO₂/100-TiO₂-Na₂O for clinopyroxene (cpx) (simplified after Beccaluva et al., 1989), showing the chemical variability of clinopyroxene of Site 1201 basalts. Early = phenocryst cores; late = phenocryst rims, microphenocrysts, and microlites. MORB = mid-ocean-ridge basalt; IAT = island-arc tholeiite; BON = boninite.