抄録
Profile samples were collected from the soils on the terrace and hill areas in Bangladesh. Rare earth elements (REE), particle-size distribution, and mineralogical composition of the <2μm clay fraction were analyzed. The terrace soils showed an indication of moving/decomposition of clay particles from/in the surface horizons and the presence of different types of interstratified minerals in addition to mica in the clay fraction. Chondrite-normalized curves of REE indicated increase in the negative Eu anomaly towards the surface horizon. The hill soils were coarse-textured and dominated with kaolinite in the clay fraction, and showed a positive Ce anomaly in the A and B horizons. Among the REE a selective release of Eu and an enrichment of Ce in the process of soil formation was suggested.
