![Classification of the samples on the TAS diagram, Na 2 O + K 2 O versus... | Download Scientific Diagram Classification of the samples on the TAS diagram, Na 2 O + K 2 O versus... | Download Scientific Diagram](https://www.researchgate.net/publication/288721647/figure/fig3/AS:313806573064194@1451828725837/Classification-of-the-samples-on-the-TAS-diagram-Na-2-O-K-2-O-versus-SiO-2-expressed.png)
Classification of the samples on the TAS diagram, Na 2 O + K 2 O versus... | Download Scientific Diagram
![Figure F6. (A) Total alkalis (TAS) vs. silica and (B) potassium vs. silica covariation diagrams for Leg 201 glass analysis. The TAS plot displays the Irvine and Baranger (1971) alkaline/subalkaline (tholeiitic) division Figure F6. (A) Total alkalis (TAS) vs. silica and (B) potassium vs. silica covariation diagrams for Leg 201 glass analysis. The TAS plot displays the Irvine and Baranger (1971) alkaline/subalkaline (tholeiitic) division](http://www-odp.tamu.edu/publications/201_SR/122/images/22_f06.gif)
Figure F6. (A) Total alkalis (TAS) vs. silica and (B) potassium vs. silica covariation diagrams for Leg 201 glass analysis. The TAS plot displays the Irvine and Baranger (1971) alkaline/subalkaline (tholeiitic) division
Chemical classification of common volcanic rocks based on degree of silica saturation and CaO/K2O ratio
![Figure 2 from Petrology and Geochemistry of Granitic Rocks in South Sulawesi, Indonesia: Implication for Origin of Magma and Geodynamic Setting | Semantic Scholar Figure 2 from Petrology and Geochemistry of Granitic Rocks in South Sulawesi, Indonesia: Implication for Origin of Magma and Geodynamic Setting | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/3920ed374d5116de1d6b2821f3a6c5f65769a201/2-Figure2-1.png)