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Distribution of Clay Minerals in Soils on the Northern Drainage Basin of the Nakdong River  

Lee, Bong-Ho (Department of Earth and Environmental Sciences, Andong National University)
Jeong, Gi-Young (Department of Earth and Environmental Sciences, Andong National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.21, no.4, 2008 , pp. 349-354 More about this Journal
Abstract
Semiquantitative mineralogical analysis of clays in soils was performed to understand the distribution of clay minerals in relation to bedrock lithology on the northern basin of the Nakdong River. The soils developed on the granitic bedrocks have high contents of kaolinite and smectite. mite was the major clay mineral in the soils from sedimentary bedrocks, with minor kaolinite, smectite, and intergrade (interstratified chlorite-smectite or hydroxy-interlayed vermiculite) clay minerals. Illite and kaolinite contents of the soils from metamorphic and volcanic bedrocks fall between those of the soils from the granitic bedrocks and those of the soils from the sedimentary bedrocks. The clay mineralogy of the soils depends on the compositions of bedrock minerals and their susceptibility to chemical weathering. The weathering of plagioclase resulted in the high kaolinite content of the soils derived from granitic bedrocks, while the soils derived from sedimentary bedrocks are abundant in residual illite.
Keywords
basin; clay minerals; river; soil; weathering;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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