Journal of the Geological Society of Korea (지질학회지)

The Geological Society of Korea (대한지질학회)
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Basin-fill lithostratigraphy of the Early Miocene Haseo Basin in SE Korea

한반도 남동부 전기 마이오세 하서분지 충전물의 암층서

  • Yoon, Sang Won (Department of Geological Sciences, Pusan National University) ;
  • Kim, Min-Cheol (Department of Geological Sciences, Pusan National University) ;
  • Song, Cheol Woo (Department of Geological Sciences, Pusan National University) ;
  • Son, Moon (Department of Geological Sciences, Pusan National University)
  • 윤상원 (부산대학교 지질환경과학과) ;
  • 김민철 (부산대학교 지질환경과학과) ;
  • 송철우 (부산대학교 지질환경과학과) ;
  • 손문 (부산대학교 지질환경과학과)
  • Received : 2014.01.28
  • Accepted : 2014.04.03
  • Published : 2014.04.30
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Abstract

The Haseo Basin, located in the Haseori, Hwanseori, Eupcheonri, Sinseori, and Sooryeomri in Yangnammyeon, Gyeongju, is filled by the Early Miocene volcanic and sedimentary rocks and surrounded by the Cretaceous to Paleogene basements with NNW- and NS-trending right-lateral strike-slip faults and NE-trending normal faults. Based on the composition of constituent volcanogenic materials, the basin-fill is divided into three stratigraphic units, i.e. Hyodongri Volcanics, Sinseori Formation, and Hwanseori Formation in ascending order with conformable boundaries. The Hyodongri Volcanics is composed of dacitic volcanic rocks overlain by andesitic volcanic rocks, which can be correlated with the Hyodongri Volcanics distributed in the Eoil area because they show very similar petrographic features and stratigraphic positions. The lithofacies and distribution of the Hyodongri Volcanics in the Haseo Basin are spatially variable because of the spatiotemporal variability of faulting between different fault blocks inside the basin. The Sinseori Formation, bearing dacitic materials abundantly, is represented by nonvolcanic sedimentary rocks in the lower part which consisting of conglomerate and mudstone intercalated with sandstone, whereas the upper part is composed of dacitic tuff and tuffaceous sediments. The Hwanseori Formation consists of basaltic tuff and tuffaceous sediments and overlying/intruding basaltic lavas and dikes. The composition and stratigraphic position of the volcanic record indicate that a bimodal volcanism occurred in southeastern part of Korea during the Early Miocene, which is characterized by dacitic volcanism followed by basaltic volcanism. It is also interpreted that the Sinseori Formation bearing the dacitic materials and the Hwanseori Formation bearing the basaltic materials belong to the Beomgokri and Janggi groups, respectively, based on the compositional difference of constituent volcanogenic materials.

하서분지는 행정구역상 경주시 양남면 하서리 일원을 중심으로 환서리, 읍천리, 신서리 그리고 수렴리에 걸쳐 위치하며, 북북서-남남동 내지 남-북 방향의 우수향 주향이동단층과 북동-남서 방향의 정단층에 의해 경계되는 전기 마이오세의 화산암류와 퇴적암류로 충전된 퇴적분지로 정의된다. 이 분지는 백악기~고제3기초의 기반암과 단층에 의해 북쪽의 어일분지 그리고 남쪽의 정자분지와 분리된다. 분지충전물은 포함된 화산물질의 조성에 근거하여 하부로부터 효동리화산암류, 신서리층 그리고 환서리층으로 구분되며, 이들은 정합 관계를 보인다. 효동리화산암류는 데사이트질 화산암류와 이를 피복하는 안산암질 화산암류로 구성되며, 어일지역의 효동리화산암류와 암석기재적 특징이 유사하고 모두 범곡리층군 직하위의 지층이므로 암층서적으로 대비된다. 하서분지 내 효동리화산암류는 분지 내부지괴 간의 상대적 운동시기의 차이로 인해 지괴에 따라 분포양상의 차이를 보이는데, 북동구역에서는 분지 내에만 분포하는 반면, 남서구역에서는 분지 내/외부에 모두 분포한다. 신서리층은 데사이트질 화산물질을 포함하는 일련의 지층들로 구성되며, 하부는 역암과 이암에 협재하는 사암으로 구성된 쇄설성 퇴적암 그리고 상부는 데사이트질 응회암 및 응회질 퇴적암으로 주로 구성된다. 환서리층은 현무암질 화산물질을 포함하는 지층들로 구성되며, 현무암질 응회암 및 응회질 퇴적암과 이를 피복 또는 관입한 용암류와 암맥으로 구성된다. 이와 같은 화산암 및 화산퇴적물의 층서는 전기 마이오세 동안 하서분지 일원에서 데사이트질 화산활동에 이은 후기의 현무암질 화산활동으로 대표되는 이원성 화산활동이 발생되었음을 지시한다. 또한 포함된 화산물질의 조성에 근거할 때, 데사이트질 화산물질이 포함된 신서리층과 현무암질 화산물질이 포함된 환서리층은 각각 범곡리층군과 장기층군에 대비되는 것으로 판단된다.

Keywords

References

  1. Allen, P.A. and Allen, J.R., 2005, Basin analysis: Principles and Applications (2nd edition). Blackwell Publishing, USA, UK, Australia, 549 p.
  2. Altermann, W. and Nelson, D.R., 1998, Sedimentation rate, basin analysis and regional correlations of three Neoarchaean and Palaeoproterozoic sub-basins of the Kaapvaal craton as inferred from precise U-Rb zircon ages from volcaniclastic sediments. Sedimentary Geology, 120, 225-256. https://doi.org/10.1016/S0037-0738(98)00034-7
  3. Brown, R.J. and Branney, N.J., 2004, Event-stratigraphy of a caldera-forming ignimbrite eruption on Tenerife: The 273 ka Poris Formation. Bulletin of Volcanology, 66, 392-416.
  4. Busby, C. and Bassett, K., 2007, Volcanic facies architecture of an intra-arc strike-slip basin, Santa Rita Mountains, Southern Arizona. Bulletin of Volcanology, 70, 85-103. https://doi.org/10.1007/s00445-007-0122-9
  5. Byun, H., 1995, Cenozoic dinoflagellate cysts from the Pohang basin and the southern margin of the Ulleung basin. Ph.D. Thesis, Chungnam National University, Daejeon, 283 p (in Korean with English abstract).
  6. Cas, R.A.F. and Wright, J.V., 1987, Volcanic Successions: Modern and Ancient. Allen and Unwin, London, 450 p.
  7. Cheon, Y., Son, M., Song, C.W., Kim, J.-S. and Sohn, Y.K., 2012, Geometry and kinematics of the Ocheon Fault System along the boundary between the Miocene Pohang and Janggi basins, SE Korea, and its tectonic implications. Geoscience Journal, 16, 253-273. https://doi.org/10.1007/s12303-012-0029-0
  8. Fabbri, O., Charver, J. and Fournier, M., 1996, Alternate senses of displacement along the Usushima fault system during the Neogene based on fracture analyses near the western margin of the Japan Sea. Tectonophysics, 257, 275-295. https://doi.org/10.1016/0040-1951(95)00151-4
  9. Fisher, R.V. and Schmincke, H.-U., 1984, Pyroclastic Rocks. Springer-Verlag, Berlin, Heidelberg, New York, Tokyo, 472 p.
  10. Gawthorpe, R.L. and Leeder, M.R., 2000, Tectono-sedimentary evolution of active extensional basins. Basin Research, 12, 195-218. https://doi.org/10.1046/j.1365-2117.2000.00121.x
  11. Han, J.H., Kwak, Y.H., Son, J.D. and Son, B.K., 1987, Tectonic evolution and depositional environments of the Tertiary sedimentary basin, southeastern part of Korea. Report KR-86-2-(B)-4, Korea Institute of Energy and Resources, Seoul, 109 p.
  12. Janecke, S.U., Hammond, B.F., Snee, L.W. and Geissman, J.W., 1997, Rapid extension in an Eocene volcanic arc: Structure and paleogeography of an intra-arc half graben in central Idaho. Geological Society of America Bulletin, 109, 253-267. https://doi.org/10.1130/0016-7606(1997)109<0253:REIAEV>2.3.CO;2
  13. Jin, M.S., Kim, S.J. and Shin, S.C., 1988, K/Ar and fissiontrack datings for volcanic rocks in the Pohang-Kampo area. Report KD-87-27, Korea Institute of Energy and Resources, Daejeon, 51-88 (in Korean with English abstract).
  14. Jolivet, L., Huchon, P., Brun, J.P., Chamot-Rooke, N., Le Pichon, X. and Thomas, J.C., 1991, Arc deformation and marginal basin opening, Japan Sea, as a case study. Journal of Geophysical Research, 96, 4367-4384. https://doi.org/10.1029/90JB02455
  15. Jolivet, L. and Tamaki, K., 1992, Neogene kinematics in the Japan Sea Region and volcanic activity of the Northeast Japan Arc. In: Proceedings of the Ocean Drilling Program Scientific Results 127/128(2), pp. 1311-1327.
  16. Jolivet, L., Tamaki, K. and Fournier, M., 1994, Japan Sea, opening history and mechanism: a synthesis. Journal of Geophysical Research, 99, 22237-22259. https://doi.org/10.1029/93JB03463
  17. Jung, S., Kim, M.C., Cho, H., Son, M. and Sohn, Y.K., 2012, Basin fills and geological structures of the Miocene Yangpo subbasin in the Janggi-myeon, Pohang, SE Korea. Journal of the geological Society of Korea, 48, 49-68 (in Korean with English abstract).
  18. Kee, W.-S., Kim, B.C., Hwang, J.H., Song, K.-Y. and Kihm, Y.-H., 2007a, Structural Characteristics of Quaternary reverse faulting on the Eupcheon Fault, SE Korea. Journal of the Geological Society of Korea, 43, 311-333 (in Korean with English abstract).
  19. Kim, B.K., 1970, A study on the Neogene Tertiary deposits in Korea. Journal of the Geological Society of Korea, 6, 77-96 (in Korean with English abstract).
  20. Kee, W.-S., Kim, B.C., Hwang, J.H., Song, K.-Y. and Kihm, Y.-H., 2007b, The Eupcheon fault, SE Korea. In: Kee, W.-S., Kim, Y.-H., Song, K.-Y. (eds.), Quaternary Tectonics of Southeastern Korea, 119-149.
  21. Kim, B.K. and Yoon, S., 1978, Some molluscan fossils from the uppermost part of the Neogene deposits of the Pohang Basin. Journal of the Geological Society of Korea, 14, 1-12.
  22. Kim, G.-S., Kim, J.-Y., Jung, K.K., Hwang, J.-Y. and Lee, J.-D., 1995, Rb-Sr whole rock geochronology of the granitic rocks in the Kyeongju-Gampo Area, Kyongsangbugdo, Korea. Journal of Korean Earth Science Society, 16, 272-279 (in Korean with English abstract).
  23. Kim, H.S. and Kim, B.G., 1980, Copper-bearing porphyry from weolseong, southeastern part of Korea. Journal of the Geological Society of Korea, 16, 47-61 (in Korean with English abstract).
  24. Kim, I.-S., 1992, Origin and tectonic evolution of the East Sea (Sea of Japan) and the Yangsan fault system: a new synthetic interpretation. Journal of the Geological Society of Korea, 28, 84-109 (in Korean with English abstract).
  25. Kim, I.-S. and Kang, H.-C., 1989, Palaeomagnetism of Tertiary rocks in the Oil (Eoil) basin and its vicinities, southeast Korea. Journal of the Geological Society of Korea, 25, 273-293 (in Korean with English abstract).
  26. Kim, I.-S. and Kang, H.-C., 1996, Palaeomagnetism of Tertiary basins in Southern Korea: 1. Changgi basin. Economic and Environmental Geology, 29, 357-367 (in Korean with English abstract).
  27. Kim, J.S., Son, M., Kim, J.-S. and Kim, J., 2005, 40Ar/39Ar ages of the Tertiary dike swarm and volcanic rocks, SE Korea. Journal of the Petrological Society of Korea, 14, 93-107 (in Korean with English abstract).
  28. Kim, K.H. and Doh, S.-J., 1994, Paleomagnetic study of the Tertiary formations in the Yangnam basin. Journal of Korean Earth Science Society, 15, 36-45 (in Korean with English abstract).
  29. Kim, K.H., Doh, S.-J., Hwang, C.-S. and Lim, D.S., 1993, Paleomagnetic study of the Yeonil Group in Pohang Basin. Journal of the Korean Institute of Mining Geology, 26, 507-518 (in Korean with English abstract).
  30. Kim, K.H., Won, J.K., Matsuda, J., Nagao, K. and Lee, M.W., 1986, Paleomagnetism and K-Ar age of volcanic rocks for Guryongpo area. Journal of the Korean Institute of Mining Geology, 19, 231-239.
  31. Kim, M.-C., Kim, J.-S., Jung, S., Son, M. and Sohn, Y.K., 2011, Classification and stratigraphy of the Miocene basin fills in the northern area of the Janggi-myeon, Pohang, SE Korea. Journal of the Geological Society of Korea, 47, 585-612 (in Korean with English abstract).
  32. Lallemand, S. and Jolivet, L., 1985, Japan Sea: a pull-apart basin?. Earth and Planetary Science Letters, 76, 375-389.
  33. Lee, H.K., Moon, H.-S., Min, K.D., Kim, I.-S., Yun, H. and Itaya, T., 1992, Paleomagnetism, stratigraphy and geologic structure of the Tertiary Pohang and Changgi basins: K-Ar ages for the volcanic rocks. Journal of the Korean Institute of Mining Geology, 25, 337-349 (in Korean with English abstract).
  34. Lee, J.H., Yun, S.H. and Koh, J.S., 2004, Petrography of the Miocene volcanic rocks of the Eoil Basin, southeastern part of Korean Peninsula. Journal of the Petrological Society of Korea, 13, 64-80 (in Korean with English abstract).
  35. Lucchitta, I. and Suneson, N.H., 1993, Dips and extension. Geological Society of America Bulletin, 105, 1346-1356. https://doi.org/10.1130/0016-7606(1993)105<1346:DAE>2.3.CO;2
  36. Miall, A.D., 1990, Principles of Sedimentary Basin Analysis. 2nd ed., Springer-Verlag, New york, 668 p.
  37. Min, K.D., Kim, W.K., Lee, D.H., Lee, Y.S., Kim, I.-S. and Lee, Y.-H., 1994, Paleomagnetic study on the Tertiary rocks in Pohang area. Economic and Environmental Geology, 27, 49-63 (in Korean with English abstract).
  38. Noh, J.H. and Hong, J.S., 2010, Pyroclastic lithology and stratigraphy of the Beomgokri Group of Tertiary age in Janggi area. Journal of the Geological Society of Korea, 46, 141-156 (in Korean with English abstract).
  39. Park, Y.D. and Yoon, H.D., 1968, Explanatory text of the geological map of Ulsan sheet. Geological survey of Korea, 20 p.
  40. Ryu, C.-K., 1996, Tertiary formations of the Haseo area in the Yangnam basin. Master. Thesis, Pusan National University, Busan, 56 p (in Korean with English abstract).
  41. Salvador, A., 1994, International Stratigraphic Guide: A Guide to Stratigraphic Classification, Terminology, and Procedure (2nd edition). Geological Society of America, Boulder, Co.
  42. Sawada, Y., 1988, K-Ar age results of volcanic rocks in Southeast Korea (unpublished report).
  43. Schlische, R.W., 1993, Anatomy and evolution of the Traiassic-Jurassic continental rift system, eastern North America. Tectonics, 12, 1026-1042. https://doi.org/10.1029/93TC01062
  44. Shimazu, M., Yoon, S. and Tateishi, M., 1990, Tectonics and volcanism in the Sado-Pohang Belt from 20 to 14 Ma and opening of the Yamato Basin of the Japan Sea. Tectonophysics, 181, 321-330. https://doi.org/10.1016/0040-1951(90)90025-4
  45. Shin, S.-C., 2013, Revised Fission-track ages and chronostratigraphies of the Miocene basin-fill volcanics and basements, SE Korea. Journal of the Petrological Society of Korea, 22, 83-115 (in Korean with English abstract). https://doi.org/10.7854/JPSK.2013.22.2.083
  46. Sohn, Y.K., Ki, J.S., Jung, S., Kim, M.-C., Cho, H. and Son, M., 2013, Synvolcanic and syntectonic sedimentation of the mixed volcaniclastic-epiclastic succession in the Miocene Janggi Basin, SE Korea. Sedimentary Geology, 288, 40-59. https://doi.org/10.1016/j.sedgeo.2013.01.002
  47. Son, M., 1998, Formation and evolution of the Tertiary Miocene basins in southeastern Korea: Structural and paleomagnetic approaches. Ph.D. Thesis, Pusan National University, Busan, 233 p (in Korean with English abstract).
  48. Son, M., Chong, H.-Y. and Kim, I.-S., 2002, Geology and geological structures in the vicinities of the southern part of the Yonil Tectonic Line, SE Korea. Journal of the Geological Society of Korea, 38, 175-197 (in Korean with English abstract).
  49. Son, M., Kang, H.-C. and Kim, I.-S., 1996, Palaeomagnetism of Tertiary basins in southern Korea: 3. Chongja-Ulsan basins and its vicinities. Economic and Environmental Geology, 29, 509-522 (in Korean with English abstract).
  50. Son, M. and Kim, I.-S., 1994, Geological structures and evolution of the Tertiary Chongja basin, southeastern margin of the Korean peninsula. Economic and Environmental Geology, 27, 65-80 (in Korean with English abstract).
  51. Son, M., Kim, I.-S. and Sohn, Y.K., 2005, Evolution of the Miocene Waup basin, SE Korea, in response to dextral shear along the southwestern margin of the East Sea (Sea of Japan). Journal of Asian Earth Sciences, 25, 529-544. https://doi.org/10.1016/j.jseaes.2004.06.003
  52. Son, M., Kim, J.-S., Chong, H.-Y., Lee, Y.H. and Kim, I.-S., 2007, Characteristics of the Cenozoic crustal deformation in SE Korea and their tectonic implications. The Korean Society of Petroleum Geology, 13, 1-16 (in Korean with English abstract).
  53. Son, M., Kim, S.-H., Kim, J.S., Song, C.-W. and Kim, I.-S., 2009, Age and Structural Origin of the Tertiary Churyeong Breccia in the Gyeongju City, Korea. Journal of the Petrological Society of Korea, 18, 137-151 (in Korean with English abstract).
  54. Son, M., Seo, H.J. and Kim, I.-S., 2000, Geological structures and evolution of the Miocene Eoil basin, southeastern Korea. Geosciences Journal, 4, 73-88. https://doi.org/10.1007/BF02910128
  55. Son, M., Song, C.W., Kim, M.-C., Cheon, Y., Jung, S., Cho, H., Kim, H.-G., Kim, J.S. and Sohn, Y.K., 2013, Miocene crustal deformation, basin development, and tectonic implication in the southeastern Korean Peninsula. Journal of the Geological Society of Korea, 49, 93-118.
  56. Spalletti, L.A. and Dalla salda, L.H., 1996, A pull-apart volcanic related Tertiary basin, an example from the Patagonian Andes. Journal of South American Earth Sciences, 9, 197-206. https://doi.org/10.1016/0895-9811(96)00006-5
  57. Tateiwa, I., 1924, 1:50,000 Geological atlas of Chosen, No. 2, Ennichi, Kuryuho and Choyo sheets. Geological Survey of Chosen (in Japanese).
  58. Wernicke, B. and Burchfiel, B.C., 1982, Modes of extensional tectonics. Journal of Structural Geology, 4, 105-115. https://doi.org/10.1016/0191-8141(82)90021-9
  59. Wise, D.U., 1992, Dip domain method applied to the Mesozoic Connecticut valley rift basins. Tectonics, 11, 1357-1368. https://doi.org/10.1029/92TC01103
  60. Yi, S. and Yun, H., 1995, Miocene calcareous nannoplankton from the Pohang basin, Korea. Palaeontographica (B), 237, 113-158.
  61. Yoon, S., 1986, Tectonic history of the Tertiary Pohang and Yangnam basins, Korea. In Nakagawa, H., Kotaka, T. and Takayanagi, Y. (eds.), Essays in Geology Professor Nobu Kitamura Commemorative Volume, 637-644.
  62. Yoon, S., 1988, Tertiary stratigraphy of the Soutern Korean Peninsula. Korea Science and Engineering Foundation research report, 25 p.
  63. Yoon, S., 1989, Tertiary stratigraphy of the southern Korean Peninsula. In Liu, G., Tsuchi, R. and Lin, Q. (eds.), Proceedings of the international Symposium: Pacific Neogene Continental and Marine Events, IGCP-246, Nanging University Press, 95-207.
  64. Yoon, S., 1992, Geology of the Tertiary Yangnam and Pohang basins, Korea. Bulletin of the Mizunami Fossils Museum, No. 19, 13-31.
  65. Yoon, S., 1997, Miocene-Pleistocene volcanism and tectonics in southern Korea and their relationship to the opening of the Japan Sea. Tectonophysics, 281, 53-70. https://doi.org/10.1016/S0040-1951(97)00158-3
  66. Yoon, S.H. and Chough, S.K., 1995, Regional strike slip in the eastern continental margin of Korea and its tectonic implications for the evolution of Ulleung basin, East Sea (Sea of Japan). Geological Society of America Bulletin, 107, 83-97. https://doi.org/10.1130/0016-7606(1995)107<0083:RSSITE>2.3.CO;2
  67. Yun, H., Min, K.D., Moon, H., Lee, H.K. and Yi, S.S., 1991, Biostratigraphic, chemostratigraphic, paleomagnetostratigraphic, and tephrochronological study for the correlation of Tertiary formations in southern part of Korea: Regional tectonics and its stratigraphical implication in the Pohang Basin, Korea. Journal of the Paleontological Society of Korea, 1, 1-12.
  68. Yun, H., Paik, K.-H. and Chang, S.K., 1989, Paleoecology of the Eoil basin based on the organic and calcareous microfossils. Journal of the Paleontological Society of Korea, 51, 65-90.