cheungwihak
stratigraphy
stratigraphie
층위학은 지층의 형성과 변화를 연구하는 학문입니다.
Cheungwihak-eun jichung-ui hyeongseong-gwa byeonhwa-reul yeongu-haneun hakmun-imnida.
Stratigraphy is the study of the formation and changes of strata.
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