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논문 기본 정보

자료유형
학술저널
저자정보
양재혁 (한국교원대학교)
저널정보
한국지형학회 한국지형학회지 한국지형학회지 제30권 제1호
발행연도
2023.3
수록면
1 - 23 (23page)

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초록· 키워드

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Granite, weathered granite, gnesis, limestone, dolomite, sandstone, shale, mudstone, rhyolite, basalt, and tuff were prepared as slab specimens. Freeze-thaw cycles were repeated 180~300 times under temperatures ranging from -25°C to +30°C, and the changes in weathering patterns and weathering products were observed. As a result, Granite does not have joints or cracks, and instead exhibits granular disintegration and conchoidal shattering on its surface. Gneiss is the most weathering-resistant among those tested, and the released iron only stained the surface and does not cause any changes. The limestone had a few sharp fragments detached, and the dolomite had developed joints along the calcite veins and was completely shattered. Shale and mudstone were the most extreme forms of rocks in a constantly saturated condition. Shale and mudstone were broken into fragments by vertical crack, then horizontal cracks developed along the bedding. In particular, mudstones were completely fractured after developing a polygonal structure around a contraction point. Rhyolite had some granular disintegration and thin films (flake) on the surface, and basalt was rarely weathered except for a few platy-shape debris by tearing or plucking. The tuff developed short, irregular cracks along its boundaries, which separate into a spherulitic aggregates.

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