한국지구과학회지 (Journal of the Korean earth science society)

  • 제44권5호
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  • Pages.482-492
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  • 2023
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  • 1225-6692(pISSN)
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  • 2287-4518(eISSN)
한국지구과학회 (The Korean Earth Science Society)
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양산시 금산리 일원에서 확인된 양산단층 남단의 제4기 단층활동

Quaternary Faulting along the Southernmost Part of Yangsan Fault in Geumsan-ri, Yangsan-si, SE Korea

  • 한종원 (부산대학교 지질환경과학과) ;
  • 임현지 (부산대학교 지질환경과학과) ;
  • 하상민 (고려대학교 지리교육과) ;
  • 임혜원 (부산대학교 지질환경과학과) ;
  • 이성준 (한국지질자원연구원 지질재해연구본부) ;
  • 임보성 (부산대학교 지질환경과학과) ;
  • 강희철 (부산대학교 지질환경과학과) ;
  • 이선갑 (부산대학교 지질환경과학과) ;
  • 손문 (부산대학교 지질환경과학과) ;
  • 류충렬 (한국지질자원연구원 지질재해연구본부)
  • Jong-Won Han (Department of Geological Sciences, Pusan National University) ;
  • Hyeonjee Lim (Department of Geological Sciences, Pusan National University) ;
  • Sangmin Ha (Department of Geography Education, Korea University) ;
  • Hyewon Lim (Department of Geological Sciences, Pusan National University) ;
  • Seongjun Lee (Geologic Hazards Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Boseong Lim (Department of Geological Sciences, Pusan National University) ;
  • Hee-Cheol Kang (Department of Geological Sciences, Pusan National University) ;
  • Sonkap Lee (Department of Geological Sciences, Pusan National University) ;
  • Moon Son (Department of Geological Sciences, Pusan National University) ;
  • Chung-Ryul, Ryoo (Geologic Hazards Division, Korea Institute of Geoscience and Mineral Resources)
  • 투고 : 2023.08.05
  • 심사 : 2023.08.30
  • 발행 : 2023.10.31
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초록

양산시 동면 금산리 일원의 공사현장 사면 3개 지점에서 미고결 퇴적층을 절단하는 단층이 확인되었으며, 노두 단면에서 관찰되는 단층의 상세 구조분석을 수행하였다. 이곳 금산리 지점은 기존에 제4기 단층운동이 보고된 가산단층 지점으로부터 북쪽으로 약 0.6 k m 떨어진 곳에 위치한다. 관찰된 총 6조의 단층들은 14°-32°E 주향을 가지고 3조의 단층들은 77°-87°NW, 나머지 3조의 단층들은 53°-62°SE로 경사진다. 단층에 의해 절단된 미고결 퇴적층은 동편의 금정산에서 유래된 선상지 역암으로 주로 화강암 또는 화산암 기원의 직경 0.5 m 이상의 거력으로 구성된다. 단층면 상에 발달하는 단층조선은 역이동성 성분이 포함된 우수향 주향이동단층 운동감각을 지시하며, 이러한 변형특성은 한반도 현생 응력환경인 동북동-서남서 압축응력과 부합한다. 사면에서 관찰되는 기반암과 미고결 퇴적층과의 부정합면을 기준으로 산정한 단층의 겉보기 수직변위는 동편이 15 m, 서편이 1m이다.

We analyzed the structural characteristics of faults that cut unconsolidated conglomerates on three construction slopes in Geumsan-ri, Yangsan-si. This outcrop is located approximately 0.6 km north of the Gasan site, where Quaternary faulting has been previously reported. The six faults observed in Geumsan-ri have N14°-32°E strikes; the dip of three faults is 53°-62°SE, while that of other faults is 77° -87°NW. The unconsolidated conglomerates cut by the faults are the fanglomerates derived from Mt. Geumjeong and are mainly composed of granitic or volcanic boulders with a diameter of more than 0.5 m. Slickenlines observed on the fault surfaces indicate a dextral strike-slip sense with a small reverse-slip component under ENE-WSW maximum horizontal stress field, which corresponds with the current stress environment in the Korean Peninsula. The vertical separations of the faults on the east and west sides, calculated from the offset unconformity between the unconsolidated sediments and granite, were estimated to be 15 m and 1 m, respectively.

키워드

과제정보

이 연구는 한국지질자원연구원 2023년 기본과제 '판내부 활성지구조특성 연구 및 단층분절모델 개발'과 행정안전부 지진 위험분석 및 관리기술개발사업(2022-MOIS62-001(RS-2022-ND640011))의 지원을 받아 수행된 연구입니다. 심사과정에서 세심하고 건설적인 조언을 해주신 익명의 심사위원님들께 감사드린다.

참고문헌

  1. Bonilla, M.G., Mark, R.K. and Lienkaemper, J.J., 1984, Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement. Bulletin of Seismological Society of America, 74, 2379-2411. https://doi.org/10.3133/ofr84256
  2. Cha, M.S., 1976, Petrological Study on the Bulgugsa Acidic Igneous Rocks in Busan Area. Journal of the Korean Institute of Mining Geology, 9, 85-106. (in Korean)
  3. Chang, C.-J., 2002, Structural characteristics and evolution of the Yangsan fault, SE Korea. Ph.D. Thesis, Kyungpook National University, Daegu, 259 p. (in Korean)
  4. Chang, K.H., Woo, B.G., Lee, J.H., Park, S.O. and Yao, A., 1990, Cretaceous and Early Cenozoic stratigraphy and history of eastern Kyongsang Basin, S. Korea. Journal of the Geological Society of Korea, 26, 471-487. (in Korean)
  5. Cheon, Y., Cho, H., Ha, S., Kang, H.-C., Kim, J.-S. and Son, M., 2019, Tectonically controlled multiple stages of deformation along the Yangsan Fault Zone, SE Korea, since late Cretaceous. Journal of Asian Earth Sciences, 170, 188-207. https://doi.org/10.1016/j.jseaes.2018.11.003
  6. Cheon, Y., Choi, J.-H., Kim, N., Lee, H., Choi, I., Bae, H., Rockwell, T.K., Lee, S.R., Ryoo, C.-R., Choi, H. and Lee, T.-H., 2020, Late Quaternary transpressional earthquakes on a long-lived intraplate fault: A case study of the Southern Yangsan Fault, SE Korea. Quaternary International, 553, 132-143. https://doi.org/10.1016/j.quaint.2020.07.025
  7. Choi, H.I., Oh, J.H., Shin, S.C. and Yang, M.Y., 1980, Geology and geochemistry of the Gyeongsang strata in Ulsan area. Korea Institute of Energy and Resources Bulletin, 20, 33. (in Korean)
  8. Choi, J.-H., Kim, Y.-S. and Klinger, Y., 2017, Recent progress in studies on the characteristics of surface rupture associated with large earthquakes. Journal of the Geological Society of Korea. 53, 129-157. (in Korean) https://doi.org/10.14770/jgsk.2017.53.1.129
  9. Choi, P., 2005, Geometric analysis of the Quaternary Eupchon Fault: An interpretation of trench sections. Journal of the Geological Society of Korea, 41, 129-140. (in Korean)
  10. Choi, S.-J., Jeon, J.-S., Song, K.-Y., Kim, H.-C., Kim, Y.-H., Choi, P.-Y., Chwae, U.C., Han, J.-G., Ryoo, C.-R., Sun, C.-G., Jeon, M.S., Kim, G.-Y., Kim, Y.-B., Lee, H.-J., Shin, J.S., Lee, Y.-S. and Kee, W.-S., 2012, Active faults and seismic hazard map. NEMA, Seoul, 882 p.
  11. Choi, W.-H., 2003, Neotectonics of the Gyeongju-Ulsan area in the southeastern part of Korean Peninsula. Ph.D. thesis, Seoul National University, Korea, 205 p. (in Korean)
  12. Chwae, U. and 57 et al., 1998, Final report of the re-evaluation to the design base earthquake considering the Yangsan Fault. Technical Note of Korea Institute of Geology, Mining and Materials, Korea Electric Power Corporation, KR-B-255-7-1998, 1,694 p. (in Korean)
  13. Gwon, O., Park, K., Naik, S.P., Shin, H.-C. and Kim, Y.-S., 2021, A study on the characteristics of fault activity in the southern part of the Ulsan fault using paleoseismic method. Journal of the Geological Society of Korea, 57, 109-121. (in Korean) https://doi.org/10.14770/jgsk.2021.57.2.109
  14. Ha, S., Son, M. and Seong, Y.B., 2022, Active fault trace identification using a LiDAR high-resolution DEM: A case study of the central Yangsan Fault, Korea. Remote sensing, 14, 4838.
  15. Hwang, B.H., Lee, J.D. and Yang, K., 2004, Petrological study of the granitic rocks around the Yangsan fault: Lateral displacement of the Yangsan fault. Journal of the Geological Society of Korea, 40, 161-178. (in Korean)
  16. Hwang, B.H., Lee, J.D., Yang, K. and McWilliams, M., 2007a, Cenozoic strike-slip displacement along the Yangsan fault, southeast Korean Peninsula. International Geology Review, 49, 768-775. https://doi.org/10.2747/0020-6814.49.8.768
  17. Hwang, B.H., McWilliams, M., Son, M. and Yang, K., 2007b, Tectonic implication of A-type granites across the Yangsan fault, Gigye and Gyeongju areas, southeast Korean Peninsula. International Geology Review, 49, 1094-1102. https://doi.org/10.2747/0020-6814.49.12.1094
  18. Im, C.B. and 150 et al., 2003, Development of technology and background for seismic safety evaluation. Report KINS/GR-255, KINS (Korea Institute of Nuclear Safety), Daejeon, 1433 p. (in Korean)
  19. Jin, K., Kim, Y.-S., Kang, H.C. and Shin, H.C., 2013, Study on developing characteristics of the Quaternary Gusan Fault in Uljin, Gyeongbuk, Korea. Journal of the Geological Society of Korea, 49, 197-207. (in Korean)
  20. Kanamori, H., 1977, The energy release in great earthquakes. Journal of Geophysical Research, 82, 2981-2987. https://doi.org/10.1029/JB082i020p02981
  21. Kang, J.-H. and Ryoo, C.-R., 2009, The movement history of the southern part of the Yangsan Fault Zone interpreted from the geometric and kinematic characteristics of the Sinheung Fault, Eonyang, Gyeongsang Basin, Korea. Journal of the Petrological Society of Korea, 18, 19-30. (in Korean)
  22. Kee, W.-S., Kim, B.C., Hwang, J.H., Song, K.-Y. and Kim, Y.-H., 2007, Structural characteristics of Quaternary reverse faulting on the Eupcheon Fault, SE Korea. Journal of the Geological Society of Korea, 43, 311-333. (in Korean)
  23. Khromovskikh, V.S., 1989, Determination of magnitudes of ancient earthquakes from dimensions of observed seismodislocations. In: D. Denham (Editor), Quantification of Earthquakes and the Determination of Source Parameters. Tectonophysics, 166, 269-280. https://doi.org/10.1016/0040-1951(89)90219-9
  24. Kim, M.-C., Jung, S., Yoon, S., Jeong, R.-Y., Song, C.W. and Son, M., 2016, Neotectonic Crustal Deformation and Current Stress Field in the Korean Peninsula and Their Tectonic Implications: A Review. Journal of Petrological Society of Korea, 3, 169-193. (in Korean) https://doi.org/10.7854/JPSK.2016.25.3.169
  25. Kim, T. Kim, D.-E., Kim, S.-J., Seong, Y.B., Lim, H.S., Shin, H.-C. and Kim, Y.-S., 2021, Kinematic characteristics and movement timing of the Wonwonsa fault in the central Ulsan fault. Journal of the Geological Society of Korea, 57, 35-48. (in Korean) https://doi.org/10.14770/jgsk.2021.57.1.35
  26. Kim, T., Choi, J.-H., Cheon, Y., Lee, T.-H., Kim, N., Lee, H., Kim, C.-M., Choi, Y., Bae, H., Kim, Y.-S., Ryoo, C.-R. and Klinger, Y., 2023, Correlation of paleoearthquake records at multiple sites along the southern Yangsan Fault, Korea: Insights into rupture scenarios of intraplate strike-slip earthquakes. Tectonophysics, 854, 229817.
  27. Kim, Y.-S. and Jin, K., 2006, Estimated earthquake magnitude from the Yugye Fault displacement on a trench section in Pohang, SE Korea. Journal of the Geological Society of Korea, 42, 79-94. (in Korean)
  28. Kim, Y.-S., Jin, K., Choi, W.-H. and Kee, W.-S., 2011 Understanding of active faults: A review for recent researches. Journal of the Geological Society of Korea, 47, 723-752. (in Korean)
  29. Kim, Y.-S., Park, J.Y., Kim, J.H., Shin, H.C. and Sanderson, D.J., 2004, Thrust geometries in unconsolidated Quaternary sediments and evolution of the Eupchon Fault, southeast Korea. The Island Arc, 13, 403-415. https://doi.org/10.1111/j.1440-1738.2004.00435.x
  30. Kim, Y.-S., Son, M., Choi, J.-H., Choi, J.-H. and Lee, H.-K., 2022, Research and Development of Active Fault of Korea Peninsula. Ministry of the Interior and Safety, 2017-MOIS31-006, 1,111 p. (in Korean)
  31. Ko, K., Choi, S.-J., Lee, T.-H., Ghim, Y.S., Kim, C.-M., Kim, K. and Cheon, Y., 2022, A multidisciplinary approach to characterization of the mature northern Yangsan fault in Korea and its active faulting. Marine Geophysical Research, 43, 21.
  32. Kyung, J.B., 1997, Paleoseismological study on the Midnorthern part of Ulsan Fault by trench method. The Journal of Engineering Geology, 7, 81-90. (in Korean)
  33. Kyung, J.B., 2003, Paleoseismology of the Yangsan Fault, southeastern part of the Korean Peninsula. Annals of Geophysics, 46, 983-996.
  34. Kyung, J.B., 2010, Paleoseismological study and evaluation of maximum earthquake magnitude along the Yangsan and Ulsan fault zones in the southeastern part of Korea. Geophysics and Geophsical Exploration, 13(3), 187-197.
  35. Kyung, J.B. and Chang, T.W., 2001, The latest fault movement on the northern Yangsan fault zone around the Yugye-ri area, southeast Korea. Journal of the Geological Society of Korea, 37, 563-577. (in Korean)
  36. Kyung, J.-B., Lee, K. and Okada, A., 1999a, A paleoseismological study of the Yangsan fault - analysis of deformed topography and trench survey. Journal of the Korean Geophysical Society, 2, 155-168. (in Korean)
  37. Kyung, J.-B., Lee, K., Okada, A., Watanabe, M., Suzuki, Y. and Takemura, K., 1999b, Study of fault characteristics by trench survey in the Sangchon-ri area in the southern part of Yangsan fault, southeastern Korea. Journal of Korean Earth Science Society, 20, 101-110. (in Korean)
  38. Lee, B.J., Ryoo, C.-R. and Chwae, U., 1999, Quaternary faults in the Yangnam area, Kyongju, Korea. Journal of the Geological Society of Korea, 35, 1-14 (in Korean with English abstract).
  39. Lee, J., Rezaei, S., Hong, Y., Choi, J.-H., Choi, J.-H., Choi, W.-H., Rhee, K.-W. and Kim, Y.-S., 2015, Quaternary fault analysis through a trench investigation on the northern extension of the Yangsan fault at Dangu-ri, Gyungju-si, Gyeongsanbuk-do. Journal of the Geological Society of Korea, 51, 471-485. (in Korean) https://doi.org/10.14770/jgsk.2015.51.5.471
  40. Lee, K. and Jin, Y.G., 1991, Segmentation of the Yangsan fault system: Geophysical studies on major faults in the Kyeongsang Basin. Journal of the Geological Society of Korea, 27, 434-449. (in Korean)
  41. Lee, M.S. and Kang, P.C., 1964, Geological map of Korea, Yangsan Sheet, 1:50,000. Geological Survey of Korea, 48 p. (in Korean)
  42. Lee, S., Han, J., Ha, S., Lim, H., Seong, Y.B., Choi, J.-H., Lee, C.H., Kim, S.-J., Kang, H.-C., Kim, M.-C., Im, H. and Son, M., 2022, Characteristics of the Quaternary faulting detected along the Yangsan Fault in Yugye-and Jungsan-ri, northern Pohang City. Journal of the Geological Society of Korea, 58, 427-443. (in Korean) https://doi.org/10.14770/jgsk.2022.58.4.427
  43. Lee, Y., Cheon, Y., Ha, S., Kang, H.-C., Choi, J.-H. and Son, M., 2017, Geometric and kinematic characteristics of the Quaternary fault at Seooe site, in Goseong-gun, Gyeongsangnam-do. Journal of the Geological Society of Korea, 53, 115-127. (in Korean) https://doi.org/10.14770/jgsk.2017.53.1.115
  44. Lee, Y.H., 2003, Quaternary faults in the eastern area of the Ulsan fault (Korea). Master thesis, Pusan National University, Korea, 74 p.
  45. Lee, Y.J., 1980, Granitic rocks from the southern Gyeongsang basin, southeastern Korea, Part I. General geology and K-Ar ages of granitic rocks. Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 75, 105-116. (in Japanese). https://doi.org/10.2465/ganko1941.75.105
  46. Lee, Y.J., 1982, Geranitic rocks from the southern Gyeongsang Basin, southeastern Korea, Part II, Petrography and modal composition. Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 77, 171-180. (in Japanese). https://doi.org/10.2465/ganko1941.77.171
  47. Lee, Y.J., Yun, S.H., Kim, S.W., Koh, I.S., Hwang, S.K., Chung, W.W., Kim, J.W., Lee, C.L and Hayashi M., 1999, Crystal morphology of zircon in granitoids from the Mt. Keumjeong District, Pusan, Korea. Journal of Petrological Society of Korea, 8, 71-80. (in Korean)
  48. Lim, H., Ha, S., Ryoo, C.-R., Lee, T.-H. and Son, M., 2021, Evidence of surface rupture in the southernmost part of the Yangsan fault and deterministic seismic hazard assessment: in the Busan metropolitan area. The 76th Annual Meeting of the Geological Society of Korea and 2021 Fall Joint Conference of the Geological Sciences (Abstracts), Jeju, October 26-28, 275 p. (in Korean)
  49. Naik, S.P., Gwon, O., Park, K., Bae, S.Y., Shin, H.-C., Choi, J.-H. and Kim, Y.-S., 2022, Localization and characterization of the southern Ulsan fault (UF) using geoelectrical imaging: Implication for seismic hazard assessment in an urbanized area. Journal of Geodynamics, 151, 101919.
  50. Okada, A., Watanabe, M., Jun, M.S., Jo, W.R., Kim, S.K., Jeon, J.S., Chi, H.C. and Oike, K., 1994, Active fault topography and trench survey in the central part of the Yangsan fault, South Korea. Journal of Geography, 103, 111-126 (in Japanese). doi: 10.5026/jgeography.103.2_111
  51. Park, K., Naik, S.P., Gwon, O., Shin, H.-C. and Kim, Y.-S., 2022, Characterization of fault kinematics based on paleoseismic data in the Malbang area in the central part of the Ulsan Fault Zone. Journal of Korean Earth Science Society, 43, 151-164. (in Korean) https://doi.org/10.5467/JKESS.2022.43.1.151
  52. Park, H.-J., Han, R., Gu, D., Woo, S., Son, M. and Yun, D., 2022, Quaternary seismic slip recorded in a fault, Cheongun-dong area, Gyeongju, Korea. Journal of the Geological Society of Korea, 58, 283-302. (in Korean) https://doi.org/10.14770/jgsk.2022.58.3.283
  53. Reedman, A.J. and Um, S.H., 1975, The geology of Korea: Seoul, Korea. Geological and Mining Institute of Korea, 139 p.
  54. Ryoo, C,-R., 2009, A report for the Quaternary Gaegok 6 Fault developed in the Mid-eastern part of Ulsan Fault Zone, Korea. Economic and Environmental Geology, 42, 635-643. (in Korean)
  55. Ryoo, C.-R., Chwae, U., Choi, S.-J. and Son, M., 2001, Quaternary faults in Hwalseong-ri, Oedong-up, Gyeongju, Korea. KIGAM Bulletin, 5, 24-33. (in Korean)
  56. Ryoo, C,-R., Ha, S., Im, H. and Son, M., 2021, Active fault in Gasan-ri, Yangsan, Korea: Gasan Fault. Proceedings of the 2021 Spring Meeting of the Korean Earth Science Society, 30 p.
  57. Ryoo, C.-R., Kang, J.-H., Son, M., Choi, S.-J. and Chwae, U., 2006, Geological Structure of the Quaternary Sinheung Fault developed along Yangsan Fault in the northern Eonyang, Ulsan, Korea. KIGAM Bulletin, 10, 3-17. (in Korean)
  58. Ryoo, C.-R., Lee, B.-J. and Chwae, U., 2000, Quaternary fault and its remote sensing image in the southeastern Korea. CCOP (Coordinating Committee for Costal and Offshore Geoscience Programs in East and Southeast Asian) Technical Bulletin, 29, 5-28.
  59. Ryoo, C.-R., Lee, B.-J., Cho, D.-L., Chwae, U.-C., Choi, S.-J. and Kim, J.-Y., 1999, Quaternary fault of Dangu-ri in Gyeongju Gangdong-myeon: Byeokgye Fault. The Korean Society of Economic and Environmental Geology/The Korean Society of Mineral and Energy Resources Engineers/Korean Society of Earth and Exploration Geophysicists, Spring Joint Conference on East-North Asia Ore Deposit of Cause of Formation, (Abstract), 334 p. (in Korean)
  60. Ryoo, C.-R., Lee, B.J., Son, M., Lee, Y.H., Choi, S.-J. and Chwae, U., 2002, Quaternary faults in Gaekok-ri, Oedongeup, Gyeongju, Korea. Journal of the Geological Society of Korea, 38, 309-323. (in Korean)
  61. Ryoo, C.-R., Yang, K., Lee, S.-W. and Kim, I.-S., 1996, Quaternary fault in the vicinity of the Ulsan fault. The Journal, College of Education, Pusan National University, Pusan, Korea, 33, 311-327. (in Korean)
  62. Slemmons, D.B., 1982, Determination of design earthquake magnitudes for microzonation. In proceeding International Earthquake Microzonation, Conference, Seattle, WA, Earthquake Engineering Research Institute, 1, 110-130.
  63. Son, C.M., Lee, S.M., Kim, Y.K., Kim, S.W. and Kim, H.S., 1978, Geological map of Korea, Dongrae and Weolnae Sheet, 1:50,000. Geological Survey of Korea, 50 p. (in Korean)
  64. Song, Y., Ha, S., Lee, S., Kang, H.-C., Choi, J.-H. and Son, M., 2020, Quaternary structural characteristics and paleoseismic interpretation of the Yangsan Fault at Dangu-ri, Gyeongju-si, SE Korea, through trench survey. Journal of the Geological Society of Korea, 56, 155-173. (in Korean) https://doi.org/10.14770/jgsk.2020.56.2.155
  65. Um, S.H., Choi, H.I., Son, J.D., Oh, J.H., Shin, S.C. and Yun, H.S., 1983, Geology and geochemical study of Gyeongsang super group in the Gyeongsang Basin. Korea Institute of Geology, Mining, and Minerals (KIGAM), Research Report, 36, 118. (in Korean)
  66. Wells, D.L. and Coppersmith, K.J., 1994, New empirical relationships among magnitude, rupture length, rupture area, and surface displacement. Bulletin of Seismological Society of America, 84, 974-1002. https://doi.org/10.1785/BSSA0840040974
  67. Yun, S.-H., Koh, J.-S., Park, K.-S., Ahn, H.-C., Kim, Y.-I., Yoo, S.-H., Lee, D.-H. and Yun, G.-Y., 2005, Rb-Sr whole-rock isochron age and petrology of the Mt. Geumjeong granite, Busan. Journal of Petrological Society of Korea, 14, 61-72. (in Korean)