광승리 연안의 연안범람기원퇴적층 형성과 변화 과정에 대한 연구- 퇴적물의 매몰연대와 화학분석을 기반으로 -
A Study on the Forming and Evolution of Coastal Flood Origin Deposits at Gwangseungri Coast – Based on Burial Age and Chemical Analysis –
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초록
As part of further study on Gwangseungri coastal deposits which occurred at 10 ~ 15m above sea level and was analyzed as palaeo-coastal flood-type sediments, six burial ages of six additional samples from the two cross sections (KST1 and, KST2) near to the points of the past study were estimated and the geochemical analysis was performed. Further investigation on the cross section KST1 revealed a reversal of the burial age at the bottom of the section which was identified as palaeo-flooding sediments and supposed to have been buried about 350 years ago. At the lower part of the KST1, the burial age of the sediment layer was estimated to be 3,800 years. The lower part of KST2 sediments was identified as sediments that was formed about 6,600 years ago and about 20,000 years ago. Considering the inclination of the sediment layers, the coastal flooding sediments reported to have formed 700 years ago in the previous study are located at the top and the KST1 section analyzed in this study seemed to be connected to the lower part. The chemical analysis showed that the relationship between these layers was not continuous but had a discontinuous characteristic influenced by a specific event, and the chemical composition also showed a rapid change. If we judge these together, the lowest part of Gwangseungri sediment layer seemed to have formed during the last glacial period but it was hard to find its origins clearly. On top of this layer, a fine sediment layer containing gravels was also formed. It seemed that sedimentation did not occur continuously, but was affected by temporary events in such a way that after a sediment layer was formed, it stopped. Since then, a coastal flooding event occurred about 700 years ago, and part of flooded sediments accumulated in the rear slope. After that, when a flood layer including additional granular materials about 350 years ago was formed, sedimentation along the slope seemed to have occurred.
Abstract
As part of further study on Gwangseungri coastal deposits which occurred at 10 ~ 15m above sea level and was analyzed as palaeo-coastal flood-type sediments, six burial ages of six additional samples from the two cross sections (KST1 and, KST2) near to the points of the past study were estimated and the geochemical analysis was performed. Further investigation on the cross section KST1 revealed a reversal of the burial age at the bottom of the section which was identified as palaeo-flooding sediments and supposed to have been buried about 350 years ago. At the lower part of the KST1, the burial age of the sediment layer was estimated to be 3,800 years. The lower part of KST2 sediments was identified as sediments that was formed about 6,600 years ago and about 20,000 years ago. Considering the inclination of the sediment layers, the coastal flooding sediments reported to have formed 700 years ago in the previous study are located at the top and the KST1 section analyzed in this study seemed to be connected to the lower part. The chemical analysis showed that the relationship between these layers was not continuous but had a discontinuous characteristic influenced by a specific event, and the chemical composition also showed a rapid change. If we judge these together, the lowest part of Gwangseungri sediment layer seemed to have formed during the last glacial period but it was hard to find its origins clearly. On top of this layer, a fine sediment layer containing gravels was also formed. It seemed that sedimentation did not occur continuously, but was affected by temporary events in such a way that after a sediment layer was formed, it stopped. Since then, a coastal flooding event occurred about 700 years ago, and part of flooded sediments accumulated in the rear slope. After that, when a flood layer including additional granular materials about 350 years ago was formed, sedimentation along the slope seemed to have occurred.
참고문헌 (27)
- Aitken, M.J., "An introduction to optical dating" (1998), Oxford University Press
- Choi, G. H., "Evolution of coastal dune system and sea level change during the Holocene in Korea", Ph.D, pp.2012
- 최성 길, "所安島의 海岸段丘와 韓半島 西南部 海岸의 地盤運動", 한국지형학회지, 13(3), pp.1~10 (2006), 한국지형학회
- 최신이, "고창군 광승리 해빈 표층 퇴적물의 계절 변화", 석사, 교육학과 지구과학교육전공, pp.2013
- Chough, S. K., "Sedimentology" (1995), Woosung
- Davis, R.A.Jr., "What is a wave dominated coast?", Marine Geology, 60, pp.313~330 (1984)
- Gupta, A.S., "Weathering indices and their applicability for crystalline rocks", Bulletins of Engineering Geology and Environment, 60, pp.201~221 (2001)
- Hails, J. R., "Significance of statistical parameters for distinguishing sedimentary environments in New South Wales, Australia", Journal of Sedimentary Petrology, 37, pp.1059~1069 (1967)
- 정혜경, "휴무스분석을 통한 진주 남강유역의 홀로세 기후 변화 연구", 한국지구과학회지, 33(6), pp.510~518 (2012), 한국지구과학회[DOI]
- Kim, H. J., "Geomorphological contribution to the study on Koch’ang basin (southwestern part of Korean peninsula)", M. Ed., pp.2005
- 김종연, "서해안의 화강암 암체 지형 발달에 대한 연구- 반발 강도와 화학 조성 특징을 중심으로 -", 한국지형학회지, 21(4), pp.19~40 (2014), 한국지형학회[DOI]
- 김종연, "고창군 광승리 연안 퇴적층의 퇴적 시기와 범람 기원 특성", 한국지구과학회지, 36(3), pp.222~235 (2015), 한국지구과학회
- 김영래, "한반도 남부의 화강암 구릉대 지표피복물의 풍화 특색", 한국지형학회지, 19(4), pp.123~137 (2012), 한국지형학회
- Kwon, H.J., "Coastal landforms of Taean peninsula and Anmyeon island", Journal of the college of Education, 6, pp.261~287 (1981)
- Geological report of the Gochang sheet (Scale 1:50000), "Lee, B.J.", Korea Institute of Geosciences and Mineral Resources, ~ (2001)
- Leeder, M., "Sedimentology and sedimentary basins" (1999), Blackwell Science
- Earthquake activities and crustal deformation in the Korean peninsula (I)(KR-95(T)-7), "Ministry of Science and technology", ~ (1995)
- Active tectonic survey around NPP area(in Korean), "Ministry of Science and Technology", ~ (2006)
- Oh, G.H., "The correlation of the marine terrace surface along the eastern and the western coast in the central part of the Korean peninsula", Shilla University Journal, 8, pp.157~172 (1980)
- Ryu, S. S., "Changes of landforms and land uses of Gochang-gun coastal fringe, Jeollabuk-do, Korea", M. Ed., pp.2009
- Sak, P. B., "Rates of weathering rind for formation on Costa Rican basalt", Geochimica et Cosmochimica Acta, 68(7), pp.1453~1472 (2004)
- Shin, W. J., "The quaternary sedimentary environment using physical-geochemical characteristics and depositional ages of aeolian deposit at Gwangseung-ri", M.Ed, pp.2016
- So, K.S., "Four season variation of surface sediments in the Myeongsasipri beach, Gochanggun, SW Korea", Journal of Science Education, The Institute of Science Education, Chonbuk National University, 37, pp.73~83 (2012)
- 소광석, "고창군 광승리 해빈 표층 퇴적물의 계절 변화", 한국지구과학회지, 33(6), pp.497~509 (2012), 한국지구과학회[DOI]
- van der Weijden, C.H., "Mobility of major, minor and some redoxsensitive trace elements and rare-earth elements during weathering of four granitoids in central Portugal", Chemical Geology, 125, pp.149~167 (1995)
- 염종권, "동해안 화진포 석호의 최근 400년간 퇴적 환경 변화", 지질학회지, 38(1), pp.21~32 (2002), 대한지질학회
- Munsell Color, "Munsell Soil-Color Charts with genuine Munsell color chips" (2015)