Abstract
A comparison of ages of loess samples from Japan and China was made utilizing three methods, thermoluminescence (TL) using quartz fine grains, green-light stimulated luminescence (GLSL) using quartz fine grains, and infrared-stimulated luminescence (IRSL) using polymineral fine grains. The GLSL and IRSL ages of the three samples agreed within the error ranges, however, the TL ages are greater than those of GLSL and IRSL. The GLSL ages of the samples were concordant with independent age control given by tephrochronology but the TL ages were overestimated. The degree of overestimation varied with age and location of the samples, which might be connected with age and sediment source differences and the bleaching environment of loess in East Asia.
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