Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Constraints of REE Distribution Patterns in Core Sediments and their Provenance, Northern East China Sea

북동중국해 코아 퇴적물의 희토류원소 분포양상과 기원

  • Jung Hoi-Soo (Marine Environment Research Department, Korea Ocean Research and Development Institute) ;
  • Lim Dhong-il (Southern Coastal Environment Research Department, Korea Ocean Research and Development Institute) ;
  • Yang Shou Ye (Department of Marine Geology and Geophysics, Lab. Of Marine Geology, Tongji University) ;
  • Yoo Hai-Soo (Marine Environment Research Department, Korea Ocean Research and Development Institute)
  • 정회수 (한국해양연구원 해저환경연구사업단) ;
  • 임동일 (한국해양연구원 해양환경위해성연구사업단) ;
  • ;
  • 유해수 (한국해양연구원 해저환경연구사업단)
  • Published : 2006.02.01
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Abstract

Rare earth elements(REEs) in transgressive shelf core sediments were analysed to identify constraints of REE distribution patterns and sediment provenances in the northern East China Sea(ECS). Sediments of Chinese and Korean rivers, such as Huanghe and Yangtz rivers, Keum and Yeongsan rivers that supply sediments to the northern ECS, were also analysed to figure out their typical REE distribution patterns. The distribution patterns of Chinese and Korean river sediments, which are normalized with upper continental crust (UCC) REE values, appear to be enriched in middle rare earth elements (MREEs) in Chinese river sediments, whereas in light rare earth elements (LREEs) in Korean river sediments. We assign the MREE-enriched convex-type distribution pattern in Chinese river sediments as 'C-type', and the LREE-enriched linearly decreasing pattern in Korean river sediments as 'D-type'. A major constraint of the REE concentration in northern ECS core sediments is interpreted to be LREE-enriched monazite $((Ce,\;La)PO_4)$ that is ubiquitous in and around the study area. Meanwhile, the distribution pattern of northern ECS sediments appears to be between the C-type and the D-type. We suggest that the nothern ECS sediments are the mixture of China and Korea riverine sediments that have been accumulated in paleo-river mouth, paleo-coast, and present-day shelf environment as well.

북동중국해 코아 퇴적물중 희토류 원소(REE) 함량을 분석하여 REE함량의 분포양상을 파악하고 퇴적물 기원지를 추적하였다. 북동중국해로 퇴적물을 공급하는 한국 강(금강, 영산강 등사 중국 강(황하, 양자강 등)에서 유출된 퇴적물 중 REE함량도 분석되어 한국/중국 강에서 유출되는 퇴적물 중 REE함량의 전형적인 분포양상이 구해졌다. 상부지각 중 REE 함량으로 정규화 된 중국 강과 한국 강 퇴적물 중 REE 함량의 분포양상은 각각 중간 희토류 원소(MREE)와 가벼운 희토류원소(LREE)가 부화된 형태로 나타났다. 중국 강 퇴적물에서 나타나는 REE 함량의 분포양상은 "C-type" 즉 MREE가 부화되어 가운데가 불룩한 형태이고, 한국 강 퇴적물에서 나타나는 REE 함량의 분포양상은 "D-type" 즉 LREE가 부화되어 원자번호가 증가함에 따라 직선적으로 감소하는 형태를 보인다. 북동중국해 코아 퇴적물중 REE 함량의 주요 제한인자는 LREE가 부화되어 있고 연구해역 인근 어디에나 분포하는 모나자이트$((Ce,\;La)PO_4)$로 해석된다. 한편, 북동중국해 퇴적물 중 REE함량의 분포양상은 C-type과 D-type의 중간 형태를 보인다. 이러한 중간 형태에 근거할 때, 현재는 대륙붕 환경이지만 과거에는 강 하구였던 북동중국해의 퇴적물은 한국 강과 중국 강에서 유출된 퇴적물의 혼합체로 판단된다.

Keywords

References

  1. Alexander, C. R., DeMaster, D. J., Nittrouer, C. A. (1991) Sediment accumulation in a modern epicontinentalshelf setting: the Yellow Sea. Mar. Geol., v. 98, p, 5172
  2. Bahng, H. G., Min, G. H. and Oh, J. K. (1995) Sedimentary environment of bimodal shelf sediments: southern continental shelf of Korean Peninsula. J. Korea Soc. Oceanogr., v. 30, p, 1-12
  3. Cho, Y. G., Lee, C. B. and Choi, M. S. (1999) Geochemistry of surface sediments off the southern and western coast of Korea. Mar. Geol., v, 159, p, 111-129 https://doi.org/10.1016/S0025-3227(98)00194-7
  4. Chough, S. K., Lee, H.J. and Han, S. J. (1991) Sedimentological and geotechnical properties of finegrained sediments in part of the South Sea, Korea, Cont Shelf Res., v. 11, p, 183-195 https://doi.org/10.1016/0278-4343(91)90061-A
  5. Chough, S.K., Lee, H. J. and Yoon, S. H. (2000) Marine Geology of Korean Seas, Elsevier, Amsterdam, 313p
  6. Condie, K. C. (1991) Another look at rare earth elements in shales, Geochim. Cosmochim, Acta, v, 55, p. 2527-2531 https://doi.org/10.1016/0016-7037(91)90370-K
  7. DeMaster, D. J., McKee, B. A., Nittrouer, C. A., Qian, J. G., Cheng, G. D. (1985) Rates of sediment accumulation and particle reworking based on radiochemical measurements from continental shelf deposits in the East China Sea. Cont. Shelf Res v. 4, p. 143-158 https://doi.org/10.1016/0278-4343(85)90026-3
  8. Henderson, P. (1984) Rare earth element geochemistry. Elsevier, 510p
  9. Jung, H. S., Choi, M. S., Kim, D., Cha, H. J. and Lee, K. Y. (1998) Geochemistry of rare earth elements in twocolor core sediments from the Korea Deep Ocean Study (KODOS)-90 site, western part of Clarion-Clipperton fracture zone, northeast equatorial Pacific. Geochem. J, v.32, p, 281-299 https://doi.org/10.2343/geochemj.32.281
  10. KORDI (2002) National exploration of marine resources in the Korea Exclusive Economic Zone (EEZ), Ministry of Marine Affairs and Fishery, 769p
  11. KORDI (2005) Oceanograpgic Atlas of Korean waters, http//www.kordi.re.kr
  12. Lee, C.B., Jung, H. S. and Jeong, K. S. (1992) Distribution of some metallic elements in surface sediments of the southeastern Yellow Sea. J. Oceanol. Soc. Korea, v. 27, p. 55- 65
  13. Lee, H. J., Jeong, K. S. Han, S. J. and Bahk, K. S. (1988) Heavy minerals indicative of Holocene transgression in the southeastern Yellow Sea. Cont. Shelf Res., v, 8, p, 255-266 https://doi.org/10.1016/0278-4343(88)90032-5
  14. Lee, H.J. and Chu, Y. S. (2001) Origin of inner-shelf mud deposit in the southeastern Yellow Sea: Huksan Mud Belt. J Sediment. Res v. 71, p. 144-154 https://doi.org/10.1306/040700710144
  15. Lim, D. I. (2003) Geochemical compositions of coastal sediments around Jeju island, south sea of Korea: potential provenance of sediment. J Korean Earth Sci, Soc v. 24, p. 337-345
  16. Lie, H. J. and Cho, C. H. (2002) Recent advances in understanding the circulation and hydrography of the East China Sea, Fisheries Oceanogr., v. 11, p. 318328
  17. Lin, S., Hsieh, I. J., Huang, K. M., and Wang, C. H. (2002) Influence of the Yangtz river and grain size on the spatial variations of heavy metals and organic carbon in the East China Sea continental shelf sediments. Chem. Geol., v. 182, p. 377-394 https://doi.org/10.1016/S0009-2541(01)00331-X
  18. Liu, J., Zhu, R. and Li, G.(2003) Rock magnetic properties of the fine-grained sediment on the outer shelf of the East China Sea: implication for provenance. Mar. Geol., v.193, p. 195-206 https://doi.org/10.1016/S0025-3227(02)00660-6
  19. Mason, B. and Berry, L.G, (1968) Elements of mineralogy, Freeman and Company, 550p
  20. Milliman, J. D. Beardsley, R. C., Yang, Z. S., Limeburner, R. (1985) Modern Huanghe-derived muds on the outer shelf of the East China Sea: identification and potential transport mechanisms. Cont. Shelf Res., v. 4, p, 175-188 https://doi.org/10.1016/0278-4343(85)90028-7
  21. Park, S. C., Lee, H. H., Han, H. S., Lee, G. H., Kim, D. C. and Yoo, D. G. (2000) Evolution of late Quaternary mud deposits and recent sediment budget in the southeastern Yellow Sea. Mar. Geol., v. 170, p. 271-288 https://doi.org/10.1016/S0025-3227(00)00099-2
  22. Park, S. C., Han, H. S. and Yoo, D. G. (2003) Transgressive sand ridges on the mid-shelf of the southern sea of Korea(Korea Strait): formation and development in high-energy environments. Mar. Geol., v. 193, p. 1-18 https://doi.org/10.1016/S0025-3227(02)00611-4
  23. Park, Y. A. and Gong, W. S. (2001) Quaternary environment, Korea. Seoul Nat. Univ. Press, 564p
  24. Park, Y. A. and Khim, B. K. (1992) Origin and dispersal of recent clay minerals in the Yellow Sea, Mar. Geol., v. 104, p. 205-213 https://doi.org/10.1016/0025-3227(92)90095-Y
  25. Su, C. C. and Huh, C. A. (2002) 210Pb, 137Cs and 239, 240Pu in East China Sea sediments: sources, pathways and budgets of sediments and radionuclides. Mar. Geol., v. 183, p, 163-178 https://doi.org/10.1016/S0025-3227(02)00165-2
  26. Taylor, S. R. and McLennan, S. M, (1985) The continental crust: its composition and evolution. Blackwells, Oxford, 312p
  27. Uehara, K. and Saito, Y. (2003) Late Quaternary evolution of the YellowlEast China Sea tidal regime and its impacts on sediments dispersal and seafloor morphology. Sediment. Geol., v. 162, p. 25-38 https://doi.org/10.1016/S0037-0738(03)00234-3
  28. Yang, S. Y., Lim, D. I., Jung, H. S. and Oh, B. C. (2004) Geochemical composition and provenance discrimination of coastal sediments around Cheju Island in the southeastern Yellow Sea. Mar. Geol., v. 206, p. 41-53 https://doi.org/10.1016/j.margeo.2004.01.005
  29. Yang, S. Y., Jung, H. S., Lim, D. I. and Li, C. X. (2003) A review on the provenance discrimination of sediments in the Yellow Sea. Earth-Sci. Rev., v. 63, p. 93120
  30. Yang, S. Y., Jung, H. S., Choi, M. S. and Li, C. X. (2002) The rare earth element compositions of the Changjiang (Yangtz) and Huanghe (Yellow) river sediments. Earth Planet. Sci. Lett., v. 201, p. 407-419 https://doi.org/10.1016/S0012-821X(02)00715-X
  31. Yoo, D. G. and Park, S. C. (2000) High-resolution seismic study as a tool for sequence stratigraphic evidence of high-frequency sea-level changes: latest PlistoceneHolocene example from the Korea Strait. J. Sediment. Petrol., v. 70, p. 296-309 https://doi.org/10.1306/2DC40912-0E47-11D7-8643000102C1865D
  32. Yoo, D. G., Lee, C. W., Kim, S. P., Jin, J. H., Kim, J. K. and Han, H. C. (2002) Late Quaternary transgressive and highstand systems tracts in the northern East China Sea mid-shelf. Mar. Geol., v. 187, p. 313-328 https://doi.org/10.1016/S0025-3227(02)00384-5
  33. Yoo, D. G., Park, S. C., Sunwoo, D. and Oh, J. H. (2003) Evolution and chronology of late pleistocene shelfperched lowstand wedges in the Korea strait. J. of Asian Earth Sci., v. 22, p. 29-39 https://doi.org/10.1016/S1367-9120(03)00020-8