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Fig. 13.

Harker’s variation plots (Harker, 1909) between various oxides and SiO2 in xenoliths and Tanawal Formation. a) SiO2-Na2O b) SiO2-K2O c) SiO2-MgO d) SiO2-TiO2 e) SiO2-P2O5 f) SiO2-Al2O3 g) SiO2-Fe2O3 h) SiO2-Zr.

Episodes 2019;42:263~285 https://doi.org/10.18814/epiiugs/2019/019022
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