Geochemical diagram guide
Guides to the geochemical diagrams in Kaligeos
What each diagram shows, which data it needs, how it is usually read and how to plot it from your own CSV or Excel samples with Kaligeos.
TAS diagram
Total alkali–silica classification of volcanic rocks (Le Bas et al., 1986).
Read the guide
AFM diagram
Ternary A–F–M plot separating tholeiitic and calc-alkaline series.
Read the guide
Harker diagrams
Major-oxide variation diagrams against SiO₂ in a 3 × 3 matrix.
Read the guide
REE diagram
Chondrite-normalized rare earth element patterns (Sun & McDonough, 1989).
Read the guide
Spider diagram
Primitive-mantle-normalized multi-element patterns with a configurable element order.
Read the guide
Pearce diagrams
Th/Yb–Nb/Yb, granite discrimination and other tectonic discrimination diagrams.
Read the guide
Stiff diagram
Major-ion hydrochemistry patterns in meq/L for comparing water samples.
Read the guide
Generic XY plot
Scatter plots of any variable, sum or element ratio, including normalized ratios.
Read the guide
Custom XY Builder
Recreate a published Cartesian or ternary diagram and reuse it as a template.
Read the guide