Home

Ternary diagrams

Ternary diagrams from published classification schemes. Sample preview for now; data input arrives when this folds into the workbench.

AFM — Irvine & Baragar (1971) Tholeiitic Calc-alkaline Na₂O + K₂O FeOₜ MgO tholeiitic calc-alkaline

AFM diagram — Irvine & Baragar (1971)

A = Na₂O + K₂O, F = total iron as FeO_T, M = MgO

Separates tholeiitic from calc-alkaline differentiation trends in subalkaline rocks: trends toward F (high FeO_T) are tholeiitic, trends toward A are calc-alkaline.

Source: Irvine & Baragar (1971), Can. J. Earth Sci. 8, 523-548 (doi:10.1139/e71-055). Cite the source when used.