Journal of The Geomorphological Association of Korea (한국지형학회지)

The Geomorphological Association of Korea (한국지형학회)
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Optically Stimulated Luminescence Dating on the Quaternary deposits in Yonghan-ri, Heunghae-eup, Pohang City, South Korea

포항시 흥해읍 용한리지역에 분포하는 제4기 퇴적층의 OSL 연대

  • JUNG, Hea Kyung (Department of Chemistry Education, Sunchon National University) ;
  • Kim, Cheong Bin (Department of Physics Education, Sunchon National University)
  • Received : 2019.11.20
  • Accepted : 2019.12.19
  • Published : 2019.12.30
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Abstract

This study investigated Quaternary sand deposits in the process of surveying Quaternary deposits distributed in Yonghan-ri, Heunghae-eup, Pohang city. Field geological surveys were conducted and OSL dating samples were taken. The altitude of the Quaternary sand deposits layer is about 15m, and there are two upper and lower sand dune layers, and a peat layer is developed between them. The sampling point are just above the peat layer, and the altitude level is about 13.4m (YHO-1) and about 13.7m (YHO-2). OSL dating was performed for YHO-1 and YHO-2 and the results were 69 ± 6 ka and 62 ± 5 ka, respectively. The date analyzed are interpreted as MIS 4. On the other hand, the formation time of the peat layer at an altitude of about 13.2 to 13.7m can be compared with the results of the OSL dating of the above sandy deposits. The peat layer can be inferred to have formed during MIS 5a or earlier.

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Acknowledgement

이 연구는 2018년도 에너지기술평가원의 원전 지진 대응 역량강화를 위한 지진·단층 특성 분석 및 내진성능향상 원천기술 개발 연구(과제번호: 2018-0350)에 의해 지원되었으며 이에 감사드린다. 심사과정에서 유익한 조언을 해주신 익명의 심사분들께 감사드린다.