지구물리 (Journal of the Korean Geophysical Society)

한국지구물리·물리탐사학회 (Korean Society of Earth and Exploration Geophysicists)
권호 표지

Tectonic Link between NE China and Korean Peninsula, Revealed by Interpreting CHAMP Satellite Magnetic and GRACE Satellite Gravity Data

  • 발행 : 20060000
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The major continental blocks in NE-Asia are the North China Block and the South China Blo, which have collided, starting from the Korean peninsula. The suture zone in NE China between two blocks is well defined from the QinIing-Dabie-Orogenic Belt to the Jiaodong (Sulu) Belt by the geological and geophysical interpretation. The discovery of high pressure metamorphic rocks in the Hongsung area of the Korean peninsula can be used to estimate the suture zone. This indicates that the suture zone in the Jiaodong Belt might be extended to Hongsung area. However, due to the lack of geological and geophysical data over the Yellow sea, the extension of the suture zone to the Korean peninsula across the Yellow Sea is obscure. To find out the tectonic relationship between NE China and the Korean peninsula it is necessary to complete U-ie homogeneous geophysical dataset of NE Asia, which can be provided by satellite observations. The CHAMP lithospheric magnetic field (MF3) and CHAMP-GRACE gravity field, combined with surface measured data, allow a much more accurate in-ference of tectonic structures than previously available. The CHAMP magnetic anomaly map reveals significant magnetic lows in the Yellow Sea near Nanjing and Hongsung, where are characterized by gravity highs on U-ie CHAMP-GRACE gravity anomaly map. To evaluate the depth and location of poten-tial field anomaly causative bodies, the Euler Deconvolution method is implemented. After comparing the two potential field solutions with the simplified geological map containing tectonic lines and the distribution of earthquakes epicenters, it is found that the derived structure boundaries of both are well coincident with the seismic activities as well as with the tectonic lineaments. The interpretation of the CHAMP satellite magnetic and GRACE satellite gravity datasets reveal two tectonic boundaries in U-ie Yellow Sea and the Korean peninsula, indicating U-ie norttiern and southern margins of the suture zone between the North China Block and the South China Block. The former is extended from the Jiaodong Belt in East China to the Imjingang Belt on the Korean peninsula, the later from Nanjing, East China, to Hongsung, the Korean peninsula. The tectonic movement in or near the suture zone might be responsible for the seismic activities in the western region of the Korean Peninsula and the development of the Yellow Sea sedimentary basin.

키워드

참고문헌

  1. Artenieva, I. M., Mooney, W. D., 2001, Thermal thickness and evolution of Precamprian lithosphere: A global study, Journal of Geophysical Research, Vol., 106, No. B8, P. 16387-16414 https://doi.org/10.1029/2000JB900439
  2. Cho, J., Choi, J., Park, I., Ko, I., 1996, Bouguer anomaly map of South Korea, GIGAM, KR-96C-5, P27, in korean
  3. Cho, M., Kwon, S., Ree, J., Nakamura, E., 1995, High-pressure amphibolite of the Imjingang Belt in the Yeoncheon-Cheongok area, Journal of the Petrophysical Society of Korea 2, 1-8
  4. Chough, S. K., Kwon, S.-T., Ree, J.-H., Choi, D. K., 2000, Tectonic and sedimentary evolution of the Korean peninsula: a review and new review, Earth-Science Reviews 52, 175-235 https://doi.org/10.1016/S0012-8252(00)00029-5
  5. Gesch, D. B., Larson, K. S., 1996, Techniques for development of global 1-kilometer digital elevation models. In: Pecora Thirteen, Human Interactions with the Environment Perspectives from Space, Sioux Falls, South Dakota, August 20-22, 1996
  6. Hemant, K., Maus, S., Haak, V., 2004. Interpretation of CHAMP crustal field anomaly maps using a Geographical Information System (GIS) techniqui, in CHAMP Mission Results II, Springer Berlin, 249-254
  7. Jun, M.-S., 1991, Body-wave analysis for shallow intraplate earthquakes in the Korean Peninsula and Yellow Sea, Tectonophysics, 192, p345-357 https://doi.org/10.1016/0040-1951(91)90108-5
  8. Hacker, B. R., Ratschbacher, L., Webb, L., McWilliams, M. O., Ireland, T., Calvert, A., Dong, S. W., Henk, H. R., Chateigner, D., 2000, Exhumation of ultrahigh-pressure continental curst in east central China: Late Triassic-early Jurassic tectonic unroofing, J. Geophysics. Res., 105, 13339-64 https://doi.org/10.1029/2000JB900039
  9. Kim, J., Cho, M., 2003, Low-Pressure metamorphism and leucogranite magmatism, northeastern Yeongnam Massif, Korea: implication for Paleoproterozoic crustal evolution, Precambrian Research, 122, pp 235-251 https://doi.org/10.1016/S0301-9268(02)00213-9
  10. Kyung, J., Chung, T., Lee, D., Lee, J., Lee, E., 2000, Analysis of Seismicity by Observation of micro-earthquakes in the Central Region of South Korea, Journal of the Korean Geophysical Society, v. 3, p. 201-212
  11. Lee, Y. S., Ishikawa, N., Kim, W. K., 1999, Paleomagnetism of Tertiary rocks on the Korean Peninsula: tectonic implications for the opening of the East Sea (Sea of Japan). Tectonophysics, 304, 131-149 https://doi.org/10.1016/S0040-1951(98)00270-4
  12. Li, Z.-X., 1994, Collision between the North and South China blocks: A crustal-detachment model for suturing in the region east of the Tanlu fault, Geology, v. 22, p. 739-742 https://doi.org/10.1130/0091-7613(1994)022<0739:CBTNAS>2.3.CO;2
  13. Marson, I., Klingele, E., 1993, Advantages of using the vertical gradient of gravity for 3-D interpretation, Geophysics, vol. 58 No. 11, p. 1588-1595 https://doi.org/10.1190/1.1443374
  14. Maruyama, S., Isozaki, Y., Kimura., G., Terabayashi, M., 1997, Paleogeographic maps of the Japanese Islands: Plate tectonic synthesis from 750 Ma to the present. The Island Arc, 6, 121-142 https://doi.org/10.1111/j.1440-1738.1997.tb00043.x
  15. Nabelek, J., Chen, W. P., Ye, H., 1987, The Tanshan Earthquake Sequence and Ist Implications for the Evolution of the China Basin, Journal fo Geophysical Research, vol. 92, No B12, P 12615-12628 https://doi.org/10.1029/JB092iB12p12615
  16. Oh, C. W., Choi, S. G., Song, S. H., Kim, S. W., 2004, Metamorphic Evolution of the Baekdong Metabasite in the Hongseong Area, South Korea and its Relationship with Sulu Collision Belt of China. Gondwana Research, v. 7, pp. 809-816 https://doi.org/10.1016/S1342-937X(05)71065-0
  17. Oh, C. W., Choi, S. G., Zhai, M., Guo, J., 2002, The first finding of Eclogite relict in the Korean Peninsula and its tectonic meaning. Proc. Int. Symp. Geol. Soc. Korea, p. 7
  18. Oh, C. W., Krishnan, S., Kim, S. W., Kown, Y. W., 2004-1, The first report on ultrahigh-temperature metamorphism in Korea and its tectonic meaning to the East Asia. International workshop and field excursion, Gondwana to Asia, 5-7
  19. Oh, C. W., Kim, S. W., Choi, S. G., Zhai, M., Guo, J., Krishnan, S., 2005, First Finding of Eclogite Facies Metamorphic Event in South Korea and its Correlation with the Dabie-Sulu Collision Belt in China. The Journal of Geology, v. 113, pp. 226-232 https://doi.org/10.1086/427671
  20. Okay, A. L., Sengoer, A. M. C., 1992, Evidence for intracontinental thrust-related exhumation of the ultra-high-pressure rocks in China, Geology, v20., p. 411-414 https://doi.org/10.1130/0091-7613(1992)020<0411:EFITRE>2.3.CO;2
  21. Reid, A. B., Allsop, J. M., Granser, H., Milett, A, J., Somerton, I. W., 1990, Magnetic interpretation in three dimensions using Euler deconvolution, Geophysics, v. 45, 80-91
  22. Ravat, D., Wang, B., Wildermuth, E., Taylor, P. T., 2002, Gradients in the interpretation of satellite-altitude magnetic data: an example from central Africa, J. of Geodynamics 33, 131-142 https://doi.org/10.1016/S0264-3707(01)00059-X
  23. Reigber, C., Balmino, G., Schwintzer, P., Biancale, R., Bode, A., Lemoine, J. -M., Konig, R., Loyer, S., Neumayer, H., Marty, J.-C., Barthelmes, F., Perosanz, F., Zhu, S. -Y., 2002, A high-quility global gravity field model from CHAMP GPS tracking data and accelerometry (EIGEN-1S), Geophys. Research Letter, Vol. 29, No. 14
  24. Reigber, C., Schwintzer, P., Stubenvoll, R., Schmidt, R., Flechtner, F., Meyer, U., Konig, R., Neumayer, H., Forste, C., Barthelmes, F., Zhu, S. Y., Balmino, G., Biancale, R., Lemoine, J. -M., Meixner, H., Raimondo, J. C., 2004, A high Resolution Global Gravity Field Model Combining CHAMP and GRACE Satellites Mission and Surface Gravity Data, Abstract p 16-24, in Solid Earth, Joint CHAMP/GRACE Science Meeting, GfZ-Potsdam
  25. Ryu, I., Kim, B., Kwak, W., Kim, G., Park, S., 2000, Stratigraphic response to tectonic evolution of sedimentary basins in the Yellow Sea and abjacent areas, Jour. of Petrol. Geol., v. 8, No1, 2, p. 1-43
  26. Telford, W.M., Geldart, L. P., sheriff, R. E., 1990, Applied Geophysics, 2nd Ed., Cambridge University Press
  27. Thompson, D. T., 1982, EULDPH: A new technique for making computer-assisted depth estimates from magnetic data, Geophysics, v. 47, pp. 31-37 https://doi.org/10.1190/1.1441278
  28. Yang, J., Godard, G., Kienast, J.-R., Lu, Y., and Sun, J., 1993, Ultrahigh pressure (60 Kbar) magnesite-bearing garnet peridotites from northeastern Jiangsu, China, Journal of Geology, v. 101, p541-554 https://doi.org/10.1086/648248
  29. Yin, A., Nie, S., 1993, An indentation model for the north and south China collision and the development of the Tan-Lu and Honam fault systems, Eastern Asia, Tectonics, Vol. 12, No. 4, P801-813 https://doi.org/10.1029/93TC00313
  30. Yuan, X., 1996-1, Aeromagnetic anomaly in Atlas of Geophysics in China, Geological Publishing House, No 29, Beijing, p2-3
  31. Yuan, X., 1996-2, Bouguer anomaly in Atlas of Geophysics in China, Geological Publishing House, No 29, Beijing, p22-23
  32. Zhao, G., Wilde, S., A., Cawood, P. A., Sun, M., 2001, Archean blocks and their boundaries in the North China Carton: Lithological, geochemical, structural and P-T path constraints and tectonic evolution, Precamprican Research 107, P 45-73 https://doi.org/10.1016/S0301-9268(00)00154-6
  33. Zhao, G., Sun, M., Sanzhong, Li, Wilde, S. A., Liu, S., Zhang, Jian, 2005, Tectonic Nature of the North China Granulite-Facies Belt: tectonothermal and geochronological constraints. Gondwana Research, submitted