해남 북평면 퇴적층의 특성과 매몰 연대에 대한 연구
A Study on the Characteristics and Burial Age of Sediment Layers at Bukpyeong myeon, Haenam gun
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
The granulometric characteristics and chemical composition of the samples from the Bukpyeong myeon, Hainam gun, Jeollanam do were analyzed in this study. The samples were collected from the outcrop of coastal area where the height is about 30m. The burial age of the sediments also estimated by OSL(Optically Stimulated Luminescence) method. The origin and forming processes of the samples are not clear in this stage as limited number of evidences can be found. However it is suggested that the samples are not aeolian deposits originated from chinese loess by the chemical analysis. The mean diameter of samples were 5~6φ(silt) and are increased slightly downwards. The samples also well sorted. The samples have been heavily weathered by the chemical alteration index. The value of CIA increase downward rapidly at the upper part of outcrop, then stabilized afterwards. The vertical concentration changes ratio of cations varies; Si increases downwards while Fe, Ti, K and Mg decrease. There are fluctuation in concentration ratio of Na and Ca with increasing depth. The burial age of sample from upper part are estimated as 104.52±4.45ka BP, while that of lower part are 136.10±6.52ka BP, and they fall in to last part of MS6. The deposition rate for this site is found about 0.017mm/year. The uplift rate of the site is supposed to be 0.24~0.26m/ka with assumption of palaeo-sea level of +6m. However the origin of the sediment deposits should be explored and cleared.
Abstract
The granulometric characteristics and chemical composition of the samples from the Bukpyeong myeon, Hainam gun, Jeollanam do were analyzed in this study. The samples were collected from the outcrop of coastal area where the height is about 30m. The burial age of the sediments also estimated by OSL(Optically Stimulated Luminescence) method. The origin and forming processes of the samples are not clear in this stage as limited number of evidences can be found. However it is suggested that the samples are not aeolian deposits originated from chinese loess by the chemical analysis. The mean diameter of samples were 5~6φ(silt) and are increased slightly downwards. The samples also well sorted. The samples have been heavily weathered by the chemical alteration index. The value of CIA increase downward rapidly at the upper part of outcrop, then stabilized afterwards. The vertical concentration changes ratio of cations varies; Si increases downwards while Fe, Ti, K and Mg decrease. There are fluctuation in concentration ratio of Na and Ca with increasing depth. The burial age of sample from upper part are estimated as 104.52±4.45ka BP, while that of lower part are 136.10±6.52ka BP, and they fall in to last part of MS6. The deposition rate for this site is found about 0.017mm/year. The uplift rate of the site is supposed to be 0.24~0.26m/ka with assumption of palaeo-sea level of +6m. However the origin of the sediment deposits should be explored and cleared.
참고문헌 (28)
- Choi, J. H., "Luminescence dating of well-sorted marine terrace sediments on the southeastern coast of Korea", Quaternary Science Reviews, 22, pp.407~421 (2003)
- Choi, S.G., "Terrace development and tectonic movement during the late Pleistocene in Korea" (2012), Kongju National University Press
- Choi, S. J., "Estimation of possible maximum earthquake magnitudes of Quaternary faults in the southern Korean Peninsula", Quaternary International, 344, pp.53~63 (2014)
- Chough, S.K., "Sedimentology" (1995), Woosung
- Folk, R.L., "Brazos river bar: a study in the significance of grain size parameters", Journal of Sedimentary Petrology, 27, pp.3~26 (1957)
- Hong, H., "Clay mineralogy and geochemistry and their palaeoclimatic interpretation of the Pleistocene deposits in the Xuancheng section, southern China", Journal of Quaternary Science, 25(5), pp.662~674 (2010)
- Hong, S. C., "Constraining the depositional age of marine terrace sediments along the Eastern coast of Korea using optical dating", Ph.D, pp.2014
- 김종연, "양구 수입천 하류부의 지형 발달- 암석 표면 K-장석 IRSL 매몰연대측정 결과를 기반으로 -", 한국지형학회지, 31(2), pp.37~57 (2014), 한국지형학회
- 김종연, "고창군 광승리 연안 퇴적층의 퇴적 시기와 범람 기원 특성", 한국지구과학회지, 36(3), pp.222~235 (2015), 한국지구과학회
- Kim, J. Y., "The distribution, age and uplift ratio of marine terraces in SE coast of Korea: Review", The Korean Journal of Quaternary Research, 19(1), pp.27~40 (2005)
- Kim, S.W., "Explanatory text of the geological map of Namchang sheet(Scale 1:50000)", Geological Survey of Korea, ~ (1967)
- 김영래, "경남 고성의 화강암 적색 풍화층의 특색과 성인에 관한 논의", 한국지형학회지, 18(1), pp.57~71 (2011), 한국지형학회
- 김영래, "한반도 남부의 화강암 구릉대 지표피복물의 풍화 특색", 한국지형학회지, 19(4), pp.123~137 (2012), 한국지형학회
- 이광률, "오대천의 특성과 하안단구의 형성과정", 대한지리학회지, 44(3), pp.224~239 (2009), 대한지리학회
- 이광률, "광양만 일대 해안단구의 퇴적물 특성과 지형 형성시기", 대한지리학회지, 41(3), pp.346~360 (2006), 대한지리학회
- 이진영, "거제도 관포리 해안 퇴적층의 퇴적 환경과 시기", 지질학회지, 49(6), pp.661~667 (2013), 대한지질학회[DOI]
- Nürnberg, D., "Okhotsk Sea ice coverage and Kamchatka glaciation over the last 350 ka - Evidence from ice-rafted debris and planktonic δ18O", Palaeogeography Palaeoclimatology Palaeoecology, 310(3), pp.191~205 (2011)
- Park, M., "The geochemical characteristics and variation of surface sediments in Gangjin Bay, Korea", Master, pp.2013
- Shackleton, N. J., "Marine isotope substage 5e and the Eemian interglacial", Global and Planetary Change, 36, pp.151~155 (2003)
- Shin, W.J., "The Quaternary sedimentary environment using physical-geochemical characteristics and depositional ages of aeolian deposits Gwangseung-ri", Master, pp.2016
- van der Weijden, C.H., "Mobility of major, minor and some redox-sensitive trace elements and rare-earth elements during weathering of four granitoids in central Portugal", Chemical Geology, 125, pp.149~167 (1995)
- White, A. F., "Chemical weathering of a marine terrace chronosequence, Santa Cruz, California I:Interpreting rates and controls based on soil concentration-depth profiles", Geochimica et Cosmochimica Acta, 72, pp.36~68 (2008)
- Wintle, A.G., "A review of quartz optically stimulated luminescence characteristics and their relevance in single aliquot regeneration dating protocols", Radiation Measurements, 41, pp.369~391 (2006)
- 양재혁, "해수면 변동에 따른 남해안의 지형발달과정과 해안기후단구", 한국지형학회지, 15(1), pp.93~110 (2008), 한국지형학회
- Yoon, S.O., "Geomorphic Evolution of Fluvial Terraces at Yeongdong·Yeongseo Streams in Gangwon Province, Korea", Journal of the Korean Geographical Society, 42(3), pp.222~236 (2007)
- 윤순옥, "한국 남동해안 울산시 강동 일대 해안단구 지형발달", 한국지형학회지, 21(1), pp.147~163 (2014), 한국지형학회
- 윤순옥, "충남 서산 해미지역 뢰스-고토양 연속층의 지구화학적 특성", 지질학회지, 47(4), pp.343~362 (2011), 대한지질학회
- 윤순옥, "대천지역 뢰스-고토양 연속층의 풍화특성", 지질학회지, 43(3), pp.281~296 (2007), 대한지질학회