자원환경지질 (Economic and Environmental Geology)

  • 제40권5호
  • /
  • Pages.623-633
  • /
  • 2007
  • /
  • 1225-7281(pISSN)
  • /
  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
권호 표지

제주분지 시추시료에 포함된 유기물의 안정동위원소 및 생물표기화합물 특성

Stable Isotope and Biomarker Characteristics of Organic Matter from the Drilling Core Sediments, Jeju Basin

  • 정태진 (한국지질자원연구원 석유해저자원연구부) ;
  • 이영주 (한국지질자원연구원 석유해저자원연구부) ;
  • 김지훈 (한국지질자원연구원 석유해저자원연구부) ;
  • 오재호 (한국지질자원연구원 석유해저자원연구부) ;
  • 박명호 (한국석유공사 석유기술연구원) ;
  • 송훈영 (한국석유공사 석유기술연구원)
  • 발행 : 2007.10.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

제주분지 시추공 시료에 포함된 유기물의 특성을 파악하기 위해서 시추 시료를 채취하여 안정동위원소 및 생물표기화합물 분석을 실시하였다. Geobuk-1, Okdom-1, JDZ VII-1, VII-2 시추공 유기물의 탄소 및 질소 동위원소분석 결과는 유기물들의 기원이 해양조류 기원보다는 육성식물 기원이 우세함을 보여준다. 또한 Geobuk-1 공에서는 2,400m를 기준으로 하여 지화학적 지시자들의 뚜렷한 변화가 관찰되는데 이것은 2,400m에서 유기물 기원이나 퇴적작용 혹은 퇴적환경이 급격히 변화한 것에 기인하는 것으로 추정된다. 비투멘의 포화탄화수소 분석 결과 Geobuk-1공 3,253m, JDZ VII-1공 2,509, 2,833 그리고 3,163m구간의 시료에서는 이동된 석유의 흔적을 나타내지만 이것은 기원 유기물의 특성을 나타내는 것으로 판명되었다. 생물표기화합물에 의하면 Geobuk-1공 3,253m구간의 시료를 제외하면 분석된 Okdom-1, Geobuk-1 시추공 시료는 열적으로 미성숙 상태이고, 해성 기원 유기물의 영향을 약간 받기는 하였으나 대체로 하-호성 환경에서 퇴적된 것으로 나타났다. 반면 JDZ VII-1 시추공 시료는 대부분 Geobuk-1, Okdom-1 시추공 시료보다 육성 환경이 우세한 환경에서 퇴적된 것으로 나타났다.

Stable isotope and biomarker analyses were carried out for the organic sediments from the exploratory wells in the Jeju Basin in order to understand the characteristics of organic matter. Organic matter in Geobuk-1, Okdom-1, JDZ VII-1 and VII-2 well is predominantly originated from land plants rather than marine algae according to carbon $({\delta}^{13}C_{org})$ and nitrogen $({\delta}^{15}N_{org})$ isotopic compositions. In the Geobuk-1, geochemical characteristics such as carbon $({\delta}^{13}C_{org})$, nitrogen ($({\delta}^{15}N_{org})$ and TOC contents are obviously changed by the depth 2,400 m, which is likely due to the change of origin of organic matter, sedimentary process or sedimentary environments. Analysis of the saturated fraction of the bitumen suggests the contribution of migrated oil to the indigenous bitumen from the samples 2,509, 2,833 and 3,163 m of the JDZ YII-1 and 3,253 m of the Geobuk-1 well. However, this characteristics can be derived from the contribution of the original organic matter. Based on the biomarker analysis, the samples from the Okdom-1 and Geobuk-1 appear to represent sedimentary organic matter of similar composition, that is rotatively immature, and which was probably deposited in the fluvio-deltaic setting with minor offshore marine influence. The samples from JDZ VII-1 appear to have been deposited in a more terrestrially dominated setting.

키워드

참고문헌

  1. Bong, P.Y., Lee, H.Y., Kwon, Y.I., Son, J.D., Oh. J.H., Kwak, Y.H., Cheon. T.J., Ryu, B.J., Lee Y.J., Son, B.K., Kim, H.J., Hwang, I.G., Park, K.S., Park, K.P., Shin. C.S. and Cho C.H. (1993) Petroleum resources assessment of Sokotra basin, KIGAM Research Report KR-93-4A-1, p. 1-234
  2. Deines, P. (1980) The isotopic composition of reduced organic carbon. In: Fritz P. and Fontes, J.C. (Eds.), Handbook of Environmental Isotope Geochemistry. The Terrestrial Environment, Vol. 1. A. Elsevier, Amsterdam, pp. 329-406
  3. Geological Survey of Japan (1994) Magnetic anomaly map of East Asia, 1:4,000,000, 2 maps
  4. Honza, E. (1976) Ryukyu island (Nansei-Shoto) arc, GH 75-1 and GH 75-5 cruise January-February and July-August 1975, Geological Survey of Japan, 81p
  5. Karig, D.E. (1971) The origin and development of marginal basins in the western Pacific, J. Geophys. Res., v. 76, p. 2542-2561 https://doi.org/10.1029/JB076i011p02542
  6. Killops, S. and Killops, V. (2005) Introduction to Organic Geochemistry. Blackwell Science, Oxford. 393p
  7. Korea National Oil Company (KNOC) (2004) Study on the biostratigraphy of the Korea-Japan Joint Development Zone, 111p
  8. Korea National Oil Company (KNOC) (2006) Organic geochemisty of the southern continental shelf basin, 193p
  9. Lamb, A.L., Graham, P. W. and Melanie, J.L. (2006) A review of coastal palaeoclimate and relative sea-level reconstructions using ${\delta}^{13}C$ and C/N ratios in organic material. Earth-Sci. Rev. v. 75, p. 29-57 https://doi.org/10.1016/j.earscirev.2005.10.003
  10. Lee, C.S., Shor, G.G., Bibee L.D., Lu R.S. and Hilde, T.W.C. (1980) Okinawa Trough: Origin of a Back-arc Basin, Mar. Geol., v. 35, p. 219-241 https://doi.org/10.1016/0025-3227(80)90032-8
  11. Lee, Y.J. (1997) Petroleum geochemistry of organic matter from the Cheju basin, northern part of the East China Sea, PhD thesis, 328p
  12. Li, D. and Tao, R. (1992) Petroleum geological characteristics of East China Sea Shelf basin, Earth Planet. Sci. Lett. v. 55, p. 299-310 https://doi.org/10.1016/0012-821X(81)90109-6
  13. Liu, G. (editor) (1994) Atlas of geology and geophysics of China Seas and adjacent regions, Science Press, 94p
  14. Ludwig, W.J. (1966) Sediments and structure of the Japan trench, J. Geophys. Res., v. 71, p. 2121-2137 https://doi.org/10.1029/JZ071i008p02121
  15. Moldowan, J.M., Dahl J., Huizinga B.J., Fago F.J., Hickey L.J., Peakman T.M. and Taylor D.W. (1994) The molecular fossil record of oleanane and its relation to angiosperms. Science v. 265, p. 768-771 https://doi.org/10.1126/science.265.5173.768
  16. Moldowan, J.M., Fago, F.J., Lee, C.Y., Jacobson, S.R., Watt, D.S., Slougui, N.-E., Jeganathan, A. and Young, D.C. (1991) Sedimentary 24-n-propylcholestanes, molecular fossils diagnostic of marine algae. Science v. 247, p. 309-312
  17. Oh, J.H., Kwak, Y.H., Cheon, T.J., Ryu, B.J., Son, B.K., Hwang, I.G., Lee, Y.J., Kim, H.J., Park, K.P., Shin, C.S., Cho, C.H., Bong, P.Y., Son, J.D., Lee, H.Y. and Kwon, Y.I. (1994) Petroleum resources assessment of the Cheju basin. KIGAM Research Report KR-94(C)4-1, p. 1-343
  18. Park, Y.S., Kong, Y.S., Choi, K.L. and Kim, S.W. (1987) Petroleum geology and geochemistry of the block JDZ-V in Korean offshore, KIGAM Research Report KR-87-24, p. 1-34
  19. Park, Y.S., Kong, Y.S., Choi K.L. and Kim, S.W. (1988) Stratigraphy and paleontology of Korea/Japan joint development zone Block VIII, offshore Korean peninsula. KIGAM Research Report KR-89-3A-1, p. 7-45
  20. Peters, K.E. and Moldowan, J.M. (1993) The Biomarker Guide: Interpreting Molecular Fossils in Petroleum and Ancient Sediments. Prentice Hall, Englewood Cliffs, NJ
  21. Peters, K.E., Walters, C.C. and Moldowan J.M. (2005) The Biomarker Guide: Second Edition, I. Biomarkers and Isotope in the Environment and Human History. Cambridge University Press, 471p
  22. Peters, K.E., Sweeney, R.E. and Kaplan, I.R. (1978) Correlation of carbon and nitrogen stable isotope ratios in sedimentary organic matter. Limnol. Oceanogr. v. 23, p. 598-604 https://doi.org/10.4319/lo.1978.23.4.0598
  23. Qin, Y., Zhao, Y., Chen, L. and Zhao, S. (1996) Geology of the East China Sea, Science Press, Beijing, China, 357p
  24. Schoeninger, M.J. and DeNiro, M.J. (1984) Nitrogen and carbon isotope composition of bone collagen from marine and terrestrial animals. Geochim. Cosmochim. Acta, v. 48, p. 625-639 https://doi.org/10.1016/0016-7037(84)90091-7
  25. Sibuet, J.C., Letouzey, J., Barbier, F., Charvet, J., Foucher, J.P., Hilde, T.W.C., Kimura, M., Chiao, L.Y., Marset, B., Muller, C. and Stephan, J.F. (1987) Back arc extension in the Okinawa Trough, J. Geophys. Res., v. 92, p. 14041-14063 https://doi.org/10.1029/JB092iB13p14041
  26. Silverman, R.E., Wang, Q., Byrd, B.L., Ying, Z.H., Ming, C. and Weimer, P. (1996) 3-D Evaluation of the Ping Hu Field, East China Sea, in AAPG Studies in Geology, 42, edited by Weimer, P. and Davis, T.L., p. 91-101
  27. SPT (1993) East China Sea, Petroleum potential of acreage in the 4th offshore licensing round, Report for PEDCO, 7306/IIb. 48p
  28. Uyeda, S. and Miyashiro, A. (1974) Plate tectonics and the Japanese island : a synthesis : Geological Society of American Bulletin, v. 85, p. 1159-1170 https://doi.org/10.1130/0016-7606(1974)85<1159:PTATJI>2.0.CO;2
  29. Western Atlas and CNOOC (1994) The petroleum geology and hydrocarbo potential of the Xihu Trough, East China Sea, P. R. China : an integrated geophysical and geological study
  30. Yin, P.L. and Liu, S.S. (1990) Proceeding of International Symposium on Tectonic evolution and petroleum potential of the East China Sea, Stanford Univ., p. 80-100
  31. Zhang, Q. and Kou, C. (1989) Petroleum geology of Cenozoic basins in the northwestern continental shelf, South China Sea, in Chinese sedimentary basins, edited by Zhu, X., Elsvier, p. 197-206
  32. Zhou, Z., Zhaao, J. and Yin, P. (1989) Characteristics and tectonic evolution of the east China Sea, in Chinese sedimentary basins, edited by Zhu, X., Elsevier, p. 165-179