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    초록·키워드

    According to the result obtained by the CIA analysis(A-CN-K and A-CNK-FM ternary diagram), the chemical weathering of granitic grus in Chuncheon basin is too weak, thus calcium and sodium may not be dissolved sufficiently, but go as far as to be more progress than that of Yeongju-Bonghwa basin, Jeongeup, Nonsan and Namwon, common granitic grus in Korean Peninsula. Therefore the chemical characteristics of granitic hills in Chuncheon basin show that granitic weathered mantles are not saprolite formed by alteration while this may be true for guns(sandy weathered mantles). The weathered mantles of inner hills in the basin is slightly altered, footslope of mountains are more altered, and footslope hills are undergone some alteration. But their alteration doesn’t show any advances to saprolite, and most of them are still in incipient weathering stage.

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