DOI QR코드

DOI QR Code

경상남도 사천시 진주층에서 산출되는 막대기형 스트로마톨라이트

Rod-shaped Stromatolites from the Jinju Formation, Sacheon, Gyeongsangnam-do, Korea

  • 최종걸 (삼육대학교 교양교직과)
  • Choi, Chong-Geol (Department of General Studies and Education, Samyook University)
  • 발행 : 2007.02.28

초록

경상남도 사천시의 백악기 육성퇴적층인 진주층에서는 다양한 종류(막대기형, 멍울형, 층형, 작은 기둥형)의 스트로마톨라이트(stromatolite)가 산출된다. 세계적 산출 경향과는 달리 막대기형 스트로마톨라이트가 대량으로 발견되었다. 이는 나뭇가지에 부착 서식하던 미세조류에 의하여 탄산염 광물이 침전하여 동심원 모앙의 엽층리를 형성하여 생성된 구조이다. EPMA를 이용하여 구성광물, 속성작용, 풍화과정의 진행을 확인했다 일반적인 스트로마톨라이트는 내지성 화석이지만 막대기형 스트로마톨라이트는 외지성 화석으로도 산출될 수 있다는 점에서 특이하다. 전형적인 스트로마톨라이트의 미세 엽층리는 막대기의 포위 부분에 있으며, 여기서 최소 두 종류의 사상체 남조세균(평균 $2.2{\mu}m$$7.8{\mu}m$ 녹조류(평균 $32.3{\mu}m$ 발견하였으며, 이 때 남조세균은 피막 건설자이고, 녹조류는 피막 보조자로 판단되었다. 일부 박테리아에서는 세포사를 발견할 수 있었다.

The sedimentary sequence of the non-marine Cretaceous Jinju Formation from Sacheon, Korea, contains a number of rod-shaped stromatolites (RSS) characterized by concentric lamination with curd-shaped, stratiform, and small columnar stromatolites. Unlike the world trend, a massive distribution of rod-shaped stomatolite was discovered in the region. The mineral composition, diagenetic alteration, and weathering process of the kind were analyzed by EPMA. The gross morphology of RSS is almost identical to broken plant twigs or stems formed by microbial activity onto which it grew. RSSs are interpreted as stromatolitic algae over plant twigs, which formed through concentric carbonate precipitation by epiphytic algal photosynthesis. The distribution of localities and horizons of the stromatolite imply that RSS is allochthonous and autochthonous. Two types of cyanobacterial filaments and one type of peen algal filament were discovered. The size frequency distribution of calcified filamentous microfossils found in stromatolite was $2.2{\mu}m\;and\;7.8{\mu}m$ in mean diameter of the former, $32.3{\mu}m$ in mean diameter of the latter. The cyanobacterial fossils played a key role in the formation of stromatolite, while the green algal filament was auxiliary stromatolite-builder stromatolites. The filamentous microfossils including trichome were found within the stromatolitic laminae.

키워드

참고문헌

  1. 백인성, 이용일, 1994, 진주부근 백악기 하산동층의 범람원호수 퇴적층 내 고기후의 기록. 지질학회지, 30(4), 410-424
  2. 서승조, 1993, 진주지역 진주층산 엽지개 화석. 과학교육연구, 19, 57-63
  3. 안귀영, 백인성, 2004, 경상남도 사천시 부근의 백악기 진주층에 발달한 특이 균열구조의 산상과 성인. 지질학회지, 40(1), 93-102
  4. 양승영, 윤철수, 김태완, 2003, 한국화석도감. 아카데미 서적, 서울, 419 p
  5. 이성주, 공달용, 2004, 경상남도 남해지역의 진주층에서 분포하는 막대기형 스트로마톨라이트. 지질학회지, 40, 13-26
  6. 임성규, 최종건, 2004, 경남 사천시 비토리의 진주층에서 산출되는 대형 용각류의 아치형 보행열. 한국고생물학회 20차 학술발표회, p24
  7. 최종걸, 2004, 경상남도 사천시 일대의 진주층에서 산출되는 백악기 비해성 스트로마톨라이트. 경북대학교 대학원 박사학위 논문, 187 p
  8. Choi, C.G, Seong-Joo, L., and Lee, K.C., 2001, Stroma-tolitic algal encrustation on plant from the Cretaceous Jinju Formation, Sacheon City. The Geological Society of Korea, Abstracts, p. 23
  9. Choi, D.K. and Park, J.B., 1987, Palynology of the Jinju Formation (Lower Cretaceous), Waegwan-Daegu and Jinju Areas, Korea. Journal of Paleontological Society of Korea, 1, 28-43
  10. Golubic, S., 1976, Organisms that build stromatolites. In Walter, M.R. (ed.), Stromatolites. Elsevier, Amsterdam, 113-148
  11. Hermann, J.S. and Hubbard, D.A., 1990, Travertine- marl: stream deposits in Virginia. Commonwealth of Virginia, Virginia, 184 p
  12. Kim, J.Y., Keighley, D.G, Pickerill, R.K., Hwang, W., and Kim, K-S., 2005, Trace fossils from marginal lacustrine deposits of the Cretaceous Jinju Formation, southern coast of Korea. Palaeogeography, Palaeoclimatology, Palaeoecology, 218, 105-124 https://doi.org/10.1016/j.palaeo.2004.12.008
  13. Kim, J.Y. and Kim, T.S., 1999, Occurrence and geological significance of stromatolites from the Precambrian strata in the Socheong Island, Incheon, Korea. Journal of the Korean Earth Science Society, 20 (1), 111-125
  14. Knoll, A.H. and Golubic, S., 1992, Modern and ancient cyanobacteria. In Schidlowski, M., Golubic, S., Kimber-ley, M.M., McKirdy, D.M. and Trundinger, PA. (eds.), early organic evolution: implications for mineral and energy resources. Springer, Berlin, 450-462
  15. Knoll, A.H, Swett, K., and Mark, J., 1991, Paleobiology of a Neoproterozoic tidal flat/lagoonal complex: The Draken conglomerate Formation, Spitsbergen. Journal of Paleontology, 65, 531-570 https://doi.org/10.1017/S0022336000030663
  16. Lee, K.C., Woo, K.S., Paik, K.H, and Choi, S.J., 1991, Depositional environments and diagenetic history of the Panyawol, Hwasan, Shinyangdong formations, Kyeong-sang Supergroup, Korea, Journal of Geological Society of Korea, 27, 471-492
  17. Merz, M.U.E., 1992, The biology of carbonate precipitation by cyanobacteria. Facies, 26, 81-102 https://doi.org/10.1007/BF02539795
  18. Monty, C.L.V, 1972, Recent algal stromatolitic deposits, Andros island, Bahamas, Preliminary report. Sonder-druck aus der Geologischen Rundschau, 61, 742-783 https://doi.org/10.1007/BF01896344
  19. Neuweiler, F., Reitner, J., and Monty, C.L.V, 1997, Bio-sedimentology of microbial buildups. Facies, 36, 195-284 https://doi.org/10.1007/BF02536885
  20. Park, S.O. and Chang, K.H., 1998, Some Cretaceous Con-chostracans of Kyongsang Basin. Journal of Paleonto-logical Society of Korea, 14, 179-199
  21. Schopf, J.W., 1968, Microflora of the Bitter Springs Formation, Late Precambrian, central Australia. Journal of Paleontology, 42, 651-588
  22. Seong-Joo, L. and Golubic, S., 1999, Microfossil populations in the context of synsedimentary micrite deposition and acicular carbonate precipitation: Mesoproterozoic Gaoyuzhuang Formation, China. Precambrian Research, 96, 183-208 https://doi.org/10.1016/S0301-9268(99)00004-2
  23. Seong-Joo L., Kim, J.Y., and Lee, K.C., 2003, Bacterial microfossils from Precambrian sedimentary rocks, Soch-eong Island, Korea, Journal of the Geological Society of Korea, 39, 171-182
  24. Walter, M.R., Grotzinger, J.P., and Schopf, J.W., 1992, Pro-terozoic stromatolites. In Schopf, J.W. and Klein, C. (eds.), The Proterozoic Biosphere. Cambridge University Press, Cambridge, 253-260

피인용 문헌

  1. A Review on Microbialites: a Korean Perspective vol.24, pp.4, 2015, https://doi.org/10.7854/JPSK.2015.24.4.291
  2. Reconstruction and Paleoecological implications of Dragonfly Hemeroscopus baissicus Pritykina, 1977 (Hemeroscopidae) from the Lower Cretaceous Jinju Formation in the Jinju Area, Korea vol.52, pp.2, 2016, https://doi.org/10.14770/jgsk.2016.52.2.105