韓国の低位段丘上に堆積するレス土壌

概要

論文の詳細を見る
Loess soils are found on the lower terrace formed during the last Glacial age in Kyongju and Bueyo, Korea. Their particle mean diameters range from 8 to 10 μm, showing intermediate values between Chinese loess and Japanese eolian dust (Kosa, yellow-sand). Their clay mineral composition is characterized by the predominance of quartz and followed by kaolinite, vermiculite, illite, and vermiculite-chlorite intergrades, being very similar to that of Chinese loess. The major clay minerals of red soils and terrace deposits in Korea, on the other hand, are different from those of the loess soils, being characterized by the dominant presence of kaolinite. Since the loess soils contained AT ash (derived from Aira caldera in southern Kyushu, ca. 21,000-22,000 y. B. P.), it is concluded that loess from Chinese continent deposited on the lower terrace during the last Glacial age and then the loess soils have developed in this parent material. A modern soil on a mountain slope is also influenced by the loess from the continent.
日本ペドロジー学会の論文
1985-12-31