![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
![TAS diagram classification of MSAIS rocks in the total alkali-silica... | Download Scientific Diagram TAS diagram classification of MSAIS rocks in the total alkali-silica... | Download Scientific Diagram](https://www.researchgate.net/publication/271287485/figure/fig2/AS:610396058701826@1522541169509/TAS-diagram-classification-of-MSAIS-rocks-in-the-total-alkali-silica-diagram-Middlemost.png)
TAS diagram classification of MSAIS rocks in the total alkali-silica... | Download Scientific Diagram
![TAS Diagram. Total Alkali Silica Diagram. Igneous Petrology. Volcanic Rocks. GSI, GATE, NET, JAM. - YouTube TAS Diagram. Total Alkali Silica Diagram. Igneous Petrology. Volcanic Rocks. GSI, GATE, NET, JAM. - YouTube](https://i.ytimg.com/vi/KOglfzPFjAM/maxresdefault.jpg)