The Korean Journal of Malacology (한국패류학회지)

The Malacological Society of Korea (한국패류학회)
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Seasonality of shellfish gathering using oxygen isotope analysis of Crassostrea gigas from the Neolithic Yeondae-do shell midden site, Tongyeong, Korea

산소동위원소 분석을 이용한 신석기시대 연대도 패총의 굴 (Crassostrea gigas) 채집 계절성 연구

  • An, Deogim (Department of Conservation of Cultural Heritage, Hanseo University) ;
  • Lee, Insung (School of Earth and Environmental Sciences, Seoul National University)
  • 안덕임 (한서대학교 문화재보존학과) ;
  • 이인성 (서울대학교 지구환경과학부)
  • Received : 2015.03.09
  • Accepted : 2015.03.30
  • Published : 2015.03.31
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Abstract

Oxygen isotope ratios (${\delta}^{18}O$) of three Pacific oyster (Crassostrea gigas) specimens from the Neolithic Yeondae-do shell midden site, Tongyeong, Korea, were analyzed to determine the seasonality of shellfish gathering and site occupation. Oxygen isotope samples were taken from the left valve hinge sections of the specimens. Oxygen isotope values ranged between -0.1 ‰ and -2.4 ‰, between -0.2 ‰ and -2.9 ‰, and between 0.3 ‰ and -2.8 ‰ in oyster specimen #one, #two and #three, respectively. The isotope profiles showed seasonal temperature cycles, providing information related to the seasonality of shellfish gathering and site occupation. Hinge-edge oxygen isotope values of the specimens showed decreasing trends after passing through maximum values (winter), indicating that they formed during spring. Thus it can be assumed that during spring season, oysters were gathered and the site was occupied.

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References

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