The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Late Quaternary Depositional Processes in the Korea Plateau and Ulleung Interplain Gap, East Sea

동해 한국대지 및 울릉 분지간통로의 제4기 후기 해저퇴적작용

  • Published : 2003.05.01
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Abstract

High-resolution (Chirp, 3-11 kHz) echo facies and sedimentary facies of piston-core sediments were analyzed to reveal the late Quaternary depositional processes in the Korea Plateau and Ulleung Interplain Gap. The Korea Plateau is an Isolated topographic high with a very restricted input of terrigenous sediments, and its slope is characterized by a thin sediment cover and various-scale submarine canyons and valleys. Echo and sedimentary facies suggest that the plateau has been moulded mainly by persistent (hemi) pelagic sedimentation and intermittent settling of volcanic ashes. Sediments on the plateau slope and steep margins of ridges and seamounts were reworked by earthquake-induced, large-scale slope failures accompanied by slides, slumps and debris flows. As major fraction of the reworked sediments consists of (hemi) pelagic clay particles, large amounts of sediments released from mass flows were easily suspended to form turbid nepheloid layers rather than bottom-hugging turbidity currents, which flowed further downslope through the submarine canyons and spreaded over the Ulleung Basin plain. In the Ulleung Interplain Gap, sediments were introduced mainly by (hemi) pelagic settling and subordinate episodic mass flows (turbidity currents and debris flows) along the submarine channels from the slopes of the Oki Bank and Dok Island. The sediments in the Ulleung Interplain Channel and its margin were actively eroded and reworked by the deep water flow from the Japan Basin.

한국대지와 인근 울릉 분지간통로에 분포하는 플라이스토세 후기 퇴적층에 대한 Chirp 방식 고해상 지층탐사 자료의 탄성파상과 피스톤 코아 시료의 퇴적상 분석을 통하여 해저 퇴적작용을 규명하였다. 한국대지는 한반도와 분리된 해저고지대로서 육성 퇴적물 유입이 매우 제한되어 있으며, 한국대지 사면에는 불규칙한 돌출지형과 함께 다양한 규모의 해저협곡이나 해저계곡이 형성되어 있다 완경사의 한국대지 대부분 지역에는 화산기원 퇴적물이 협재 하는 (반)원양성 퇴적물이 우세하게 집적되어 있으며, 한국대지 사면과 해릉 및 해산의 급경사 부분에서는 이들 퇴적물이 슬럼프, 슬라이드, 암설류 등 해저사태에 기인한 질량류로 재동되어 함몰흔적과 함께 나타난다. 재동된 퇴적물은 점토가 우세한 조직 특성과 사면의 급경사 때문에 저탁류보다는 부유입자가 우세한 고농도 수층의 형태로 전이되어 해저협곡을 통해 울릉분지평원으로 이동된 것으로 보인다. 울릉분지간통로 지역은 통상적인 (반)원양성 침전과 주로 오키뱅크와 독도 사면에서 해저수로를 통해 유입되는 간헐적인 저탁류와 암설류가 주된 퇴적작용의 역할을 하였으며, 이와 함께 일본분지로부터 유입되는 심층수의 영향으로 분지간수로와 그 주변 해저에 분포하는 퇴적물이 활발히 침식되어 재동된 것으로 보인다.

Keywords

References

  1. 대한지질학회지 v.32 동해 대륙사면(삼척-양양)에서의 제 4기 퇴적작용. 윤석훈;이희준;한상준;김성렬
  2. 해양연구 v.11 동해 대륙 연변부의 천부탄성파 특성 최동림;김성렬;유해수;석봉출;한상준;최진혁
  3. 한국해양연구소, BSPN00321-950-5 한국 대수심 해역의 지구조적 해저환경 연구(2-3차년도). 한국해양연구소
  5. 한국해양연구소, BSPN97605-00-1037-5 동해분지의 해양환경 변화와 지구조 진화연구(1차년도) 한국해양연구소
  6. 대한지질학회지 v.33 동해 울릉분지 북동부(울릉도와 독도 주변) 해역의 분지구조. 한상준;김한준;허식;박찬홍;김성렬;이용국;유해수;최동림;박병권
  7. Mar. Geol. v.162 Origin of laminated mud and its paleoceanographic significance in the Ulleung Basin, East Sea(Sea of Japan) Bahk, J.J.;S.K. Chough;S.J. Han https://doi.org/10.1016/S0025-3227(99)00079-1
  8. Nature v.379 Brief interstadial events in the Santa Barbara basin, NE Pacific, during the past 60 kyr. Behl, R.J.;J.P. Kennett https://doi.org/10.1038/379243a0
  9. A graphic aooroach to facies to facies interpretation. Sedimentology of Some Flysch Deposits Bouma, A.H.
  10. Jour. Sed. Petrol. v.54 Fine structures of turbidite and associated muds in the Ulleung(Tsushima) Basin, East Sea(Sea Jpapn). Chough, S.K.;G.H. Lee;B.K. Park;S.W. Kim
  11. Mar. Geol. v.65 Zoned facies of mass-flow deposits in the Ulleung (Tsushima) Basin, Bahin, East Sea(Sea of Japan). Chough, S.K.;K.S. Jeong;E. Honza https://doi.org/10.1016/0025-3227(85)90049-0
  12. Geological Survery of Canada, Paper v.85-1B Ocean Drilling Program (ODP) site survey (Hudson 84-30) in the Labeador Sea: 3.5 kHz profiles. Chough, S.K.;D.C. Mosher;S.P. Sribastava
  13. Mar. Geotech. v.10 Suvmarine slides in the eastern continental margin, Korea. Chough, S.K.;S.H. Yoon;H.J. Lee https://doi.org/10.1080/10641199109379883
  14. Geosciences Journal v.1 Chirp (2-7 kHz) echo characters in the Ulleung Basin. Chough, S.K.;S.H. Lee;J.W. Kim;S.C. Park;D.J. Yoo;H.S. Ham;S.H. Yoon;S.B. Oh;Y.B. Kim;G.G. Back https://doi.org/10.1007/BF02910206
  15. Ph.D. Thesis, Kamgwon National University Late Pleistocene to Holocene Tephrastratigraphy and Paleoenvironment of the Ulleung Basin in the East Sea, Koreal. Chun, J.H.
  16. Mar. Geol. v.18 Echo character of the western equatorial Atlantic floor and its relationship to dispersal and distribution of terrigenous sediments. Damuth, J.E. https://doi.org/10.1016/0025-3227(75)90047-X
  17. Mar. Geol. v.28 Echo character of the Norwegian-Greenland Sea: relationship to Quaternary sedimentation. Damuth, J.E. https://doi.org/10.1016/0025-3227(78)90094-4
  18. Mar. Geol. v.38 Use of high-frequency (3.5-12kHz) echograms in the study of near-bottom sedimentation processes in the deep-sea: a review. Damuth, J.E. https://doi.org/10.1016/0025-3227(80)90051-1
  19. Am. Assoc. Pet. Geol. Bull. v.65 Mass-transport processes on Amazon Cone: western equatorial Atlantic. Damuth, J.E.;R.W. Embley
  20. Geology v.4 New evidence for occurrence of dibris flow deposits in the deep sea. Embley, R.W. https://doi.org/10.1130/0091-7613(1976)4<371:NEFOOD>2.0.CO;2
  21. Mar. Geol. v.38 The role of mass transport in the distribution and character of deep-ocean sediments with special reference to the North atlantic. Embley, R.W. https://doi.org/10.1016/0025-3227(80)90050-X
  22. Mar. Geol. v.2 Distribution and morphology of large subnarine sediment slides and slumps on Atlantic continental margins. Embley, R.W.;R.D. Jacobi
  23. Mar. Geol. v.14 Obeservations of shallow layering utilizing the pinger-probe echo sounding system. Ewing, M.;R.W. Embley;T.H. Shipley https://doi.org/10.1016/0025-3227(73)90012-1
  24. Palaeogeography, Palaeo-climatology, Palaeoecology v.156 Detailed Japan Sea pale-oceanography during the last 25 kyr. constraints from AMS dating and $\dilta^{18}$O of planktonic foraminifera. Gorbarenko, S.A.;J.R. Southon https://doi.org/10.1016/S0031-0182(99)00137-6
  25. Sedimentology v.27 The Northwest Atlantic Mid-Ocean Channel of the Labrador Sea: Ⅱ. Deposition of parallel laminated levee-muds from the viscous sublayer of low dinsity turbidity currents. Hesse, R.;S.K. Chough https://doi.org/10.1111/j.1365-3091.1980.tb01656.x
  26. Sedimentology v.31 Sedimentary facies of the Nova Scotian upper and middle continental slope, offshore eastern Canada. Hill, P.R. https://doi.org/10.1111/j.1365-3091.1984.tb00861.x
  27. Proc. ODP, Scientific Results v.127/128 Neogene kinematics in the Japan Sea region and volcanic activity of northeast Japan arc. Jolivet, L.;K. Tamaki
  28. Mar. Geol. v.72 Evidence from bedforms for a strong poleward current along the upper continental slope of northwest Europe. Kinyon, N.H. https://doi.org/10.1016/0025-3227(86)90106-4
  29. Korea Ocean Research and Development Institute Report, BSPE97605-00-1037-5 Marine Environment Changes and Basin Evolution in the East Sea, Korea (MECBES-97) KORDI
  30. Jour. Geothch. Eng. v.112 Regional method to assess off-shore slope stabilety. Lee, H.J.;B.D. Edwards
  31. Mar. Geol. v.97 Sediment failure on the Korea Plateau slope, East Sea (Sea of Japan). Lee, H.J.;S.K. Chough;S.S. Chun and S.J. Han https://doi.org/10.1016/0025-3227(91)90126-O
  32. Mar. Geol. v.110 Slope stability and geotechnical properties of sediment of the southern margin of Ulleung Basin, East Sea (Sea of Japan). Lee, H.J.;S.S. Chun;S.H. Yoon;S.R. Kim https://doi.org/10.1016/0025-3227(93)90103-3
  33. Ph.D. Thesis, Sioul National University Depositional Processes of Quaternary Dediments in the Ulleung Basin, South Korea Plateau, Ulleung Interplain Gap and Oki Bank, East Sea: Chirp (2-7 kHz) Profiles. Lee, S.H.
  34. Sedimentology v.48 High-resolution (2-7 kHz) acoustic and geometric charcters of submarine creep deposits in the South Korea Plateau, East Sea. Lee, S.H.;S.K. Chough https://doi.org/10.1046/j.1365-3091.2001.00383.x
  35. Mar. Geol. v.184 Chirp (2-7 kHz) echo characters of the South Korea Plateau, East Sea: styles of mass movement and sediment grav-ity flow. Lee, S.H.;S.K. Chough;G.G. Back;Y.B. Kim https://doi.org/10.1016/S0025-3227(01)00283-3
  36. Proc. Academic Sci. U.S.S.R. v.223 Early Proterozoic gneiss-migmatite complex of the Japan Sea, southwestern part. Lelikov, E.P.;I.I. Bersenev
  37. Mar. Geol. v.32 Echo character of off-platform carbonates. Mullins, H.T.;M.R. Bordman;A.C. Neumann https://doi.org/10.1016/0025-3227(79)90067-7
  38. Ministry of Maritime Affairs and Fisheries Bathymetric Chart of Middle Part of East Sea (No. B4623). MORI (National Oceanographic Research Institute)
  39. Paleoceanography v.6 Paleoenvironmental changes in the Japan Sea during the last 85,000 yeara. Oba, T.;M. Kato;H. Kitazato;I. Koizumi;A. Omura;T. Sakai;T. Takayama
  40. Canyons and Trenches Turbidite muds and silts in dep-sea fans and abyssal plains. Sedimintation in Submarine Fans Piper, D.J.W.;stanley, D.(ed);G. Kelling(ed)
  41. Geol. Soc. Am. Bull. v.96 Late Quaternary slumps and debris folws on the Scotian slope. Piper, D.J.W.;J.A. Farre;A. Shor https://doi.org/10.1130/0016-7606(1985)96<1508:LQSADF>2.0.CO;2
  42. Mar. Geol. v.89 The relative inportance of gravity-induced versus current-controlled sedimintation during the Quaternary along the mideast United States outer continental-margin revealed by 3.5 kHz echo character. Pratson, L.F.;E.P. Laine https://doi.org/10.1016/0025-3227(89)90029-7
  43. Palaeogeography, Palaeoclimatology, Palaeoecology v.74 Trace-fossil model for reconstructing oxygenation histories of ancient marine bottom waters: application to upper Cretaceous Niobrara Fornation. Colorado. Savrda, C.E.;D.J. Bottjer https://doi.org/10.1016/0031-0182(89)90019-9
  44. Sedimentology v.28 Depositional models for finegrained sediment in the western Hellenic Trench, Eastern Mediterranean. Stanley, D.J.;A. Maldonado https://doi.org/10.1111/j.1365-3091.1981.tb01680.x
  45. Geo-Mar. Let. v.5 Fine-grained sediments in deep water: an overview of processes and facies models. Stow, D.A.V. https://doi.org/10.1007/BF02629792
  46. Bull. Geol. Surv. Japan v.39 Gelolgic structure of the Japan Sea and its tectonic implications. Tamaki, K.
  47. Geol. Soc. Am. Bull. v.107 Regional strike-slip in the eastern continental margin of Korea and its tectonic implication for the evolution of Ulleung Basin, East Sea (Sea of Japan). Yoon, S.H.;S.K. Chough https://doi.org/10.1130/0016-7606(1995)107<0083:RSSITE>2.3.CO;2
  48. Mar. Geol. v.99 Late Pleis-tocene sedimentation on the Norwegina continental slope between 67 °N and 71 °N. Yoon, S.H.;S.K. Chough;J. Thiede;F. Werner https://doi.org/10.1016/0025-3227(91)90091-H