● Research Areas

- Electron microanalysis and TEM observations of chemical composition and crystal structure changes of clay minerals during diagenesis and low-grade metamorphism

- Electron microanalysis and TEM studies on clay mineral changes in the diagenesis of sedimentary rocks from the Jinan Basin

- Electron microanalysis and TEM studies on phyllosilicates in low-grade metamorphic rocks of the Okcheon metamorphic belt

- Electron microanalysis and TEM studies on clay mineral changes in diagenesis of sedimentary rocks from the Gyeongsang Basin

- Electron microanalysis and TEM studies of phyllosilicates in rocks of the Joseon Supergroup

- Studies on illite observed during diagenesis and low-grade metamorphism, including possible mixed-layering with muscovite and pyrophyllite