Abstract
Hyangmokri cave site was newly excavated in Kangdong County, Pyongyang City a few years ago. The sedimentary deposits in the cave consist of seven different layers. According to the composition of sediments and features of archaeological finds, it is clear that Layers 4 and 5 are of the late Palaeolithic, Layer 6 is of the Neolithic and Layer 7 is of the Bronze Age. We determined dates of some samples from Layer 4 by using thermoluminscence (TL) and electron spin resonance (ESR) dating. We found out by using TL method that three calcite samples from Layer 4 date back to 34,780 ± 3,890, 31,490 ± 3,930 and 36,020 ± 4,160a respectively, while ESR ages of three bear fossil tooth enamel samples from Layer 4 are 35,680 ± 3,860, 31,910 ± 3,430 and 34,700 ± 3,760a respectively. There is good agreement between morphological research on archaeological finds and chronological research on several samples collected from Layer 4, the first sedimentary layer which contained lots of relics.
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