한국광물학회지 (Journal of the Mineralogical Society of Korea)
- 제11권1호
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- Pages.13-19
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- 1998
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- 1225-309X(pISSN)
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- 2288-7172(eISSN)
화순지역 천운산층 중의 점토암의 조직과 그 성인적 의미
Textures of Claystones and Their Genetic Significances in the Cheonunsan Formation of the Hwasoon Area
초록
Textures of claystones of the Cheonunsan Formation in the Hwasoon area have been studied using optical microscope and electron microprobe. Microscopic images were observed under the optical microscope using the transmitted polarizing light from thin sections and under the electron microprobe using the back-scattered electron beam from the polished sections. Identification of minerals were made using X-ray diffraction analysis and chemical analysis by electon microprobe. Textural analyses show that the original sedimentary claystones rich in aluminium were subjected to metamorphism by which they changed to the metamorphosed claystone consisting mainly of chloritoid, quartz, andalusite and illite. Later intensive hydrothermal kaolinization of this metamorhosed claystones resulted in the formation of high-aluminous claystones rich in kaolinite exhibiting various complicated replacement textures.
키워드