TAS Plot
Total Alkali-Silica Diagram
An interactive TAS plot based on the field boundaries from your coordinate scheme. Enter sample points as SiO2 and total alkalis (Na2O + K2O), and they will be plotted directly on the diagram.
SiO2 vs Na2O + K2O
A cleaner TAS framework with restrained styling and direct sample plotting in SiO2 versus total alkali space.
Sample input table
Leave the table empty if you only want to inspect the TAS framework, or add your own samples to plot them directly.
| Label | SiO? wt-% | Na?O + K?O wt-% |
|---|---|---|
Notes
Enter SiO? and total alkalis for any volcanic sample. Labels are optional, but they help when several points are plotted together.
Inputs
SiO? in wt-% and Na?O + K?O in wt-%. Decimal comma also works.
Framework
The diagram uses your supplied TAS field coordinates directly, with reduced decoration so the linework stays primary.
Next Step
If you want, the next iteration can add automatic field classification, CSV import, or export to PNG/SVG.