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Deep crustal structure of Baiyun Sag, northern South China Sea revealed from deep seismic reflection profile

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Chinese Science Bulletin

Abstract

This paper discusses deep crustal architecture of the Baiyun Sag of the Pearl River Mouth Basin, northern South China Sea based on velocity analysis, time-depth conversion and seismic interpretation of the deep seismic reflection profile DSRP-2002. The profile was acquired and processed to 14 S TWT by the China National Offshore Oil Corp. (CNOOC) in 2002. It extends across the Baiyun Sag of the Pearl River Mouth Basin, from the northern continental shelf of the SCS to the deepwater province. As the first deep seismic reflection profile in the Pearl River Mouth Basin, this profile reveals seismic phases from basement down to upper most mantle. The Moho surface appears in the profile as an undulating layer of varying thickness of 1–3 km. It is not a single reflector interface, but a velocity gradient or interconversion layer. The crust thins stepwisely from the shelf to the continental slope and the abyssal plain (from north to south), and also thins under depocenters. The crustal thickness is only 7 km in the depocenter of the main Baiyun Sag, which corresponds to a Moho upwelling mirroring the basement topography. In the lower slope and the ocean-continental transition zone of the southernmost portion of the profile, three sub-parallel, NW-dipping strong reflectors found at depths around 10–21 km are interpreted as indications of a subducted Mesozoic oceanic crust. Crustal faults exist in the northern and southern boundaries of the Baiyun Sag. The intense and persistent subsidence of the Baiyun Sag might be related to the long-term activity of the crustal faults.

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References

  1. Liu, G. D., Geophysical Characteristics of China Sea Area and its Vicinage (in Chinese), Beijing: Science Press, 1992, 1–30.

    Google Scholar 

  2. Gong, Z. S., Li, S. T., Xie, T. J. et al., Basin Analysis and Hydrocarbon Accumulation of the Northern Continental Margin of the South China Sea (in Chinese), Beijing: Science Press, 1997, 1–52.

    Google Scholar 

  3. Li, P. L., Structural features and hydrocarbon accumulation in the Peal River Mouth Basin, Guangdong Geology, 1994, 9(4): 21–28.

    Google Scholar 

  4. Li, P. L., Cenozoic tectonic movement of the Peal River Mouth Basin, China Offshore Oil and Gas (Geology), 1993, 7(6): 11–17.

    Google Scholar 

  5. Liang, H. X., Li, P. L., Tectonic evolution of the South China Sea and its typical continental margin, South China Sea Research and Exploitation, 1991, (1): 1–7.

  6. Zhong, J. Q., Characteristics of geologic structure and basin evolution in the Peal River Mouth Basin, Transactions of Oceanology and Limnology, 1994, (1): 1–8.

  7. Yao, B. C., Tectonic evolution of the South China Sea in Cenozoic, Marine Geology & Quaternary Geology, 1996, 16(2): 1–13.

    Google Scholar 

  8. Yan, Q. R. et al., Crustal structure of the northern margin of the South China Sea and its tectonic processes since the Cretaceous, Geology Review, 2000, 46(4): 417–423.

    Google Scholar 

  9. Wu, S. M., Zhou, D., Qiu, X. L., Tectonic setting of the Northern Margin of South China Sea, Geological Journal of China Universities, 2001, 7(4): 419–426.

    Google Scholar 

  10. Kolla, V., Bourges, Ph., Urruty, J. M. et al., Evolution of deep-water tertiary sinuous channels offshore Angola (west Africa) and implications for reservoir architecture, AAPG Bulletin, 2001, 85(8): 1373–1406.

    CAS  Google Scholar 

  11. Dorrik, A. V. S., Mayall, M., Deep-water sedimentary systems: New models for the 21st Century, Marine and Petroleum Geology, 2000, 17(2): 125–135.

    Article  Google Scholar 

  12. Shanmugam, G., 50 years of the turbidite paradigm (1950s–1990s): Deep-water processes and facies models a critical perspective, Marine and Petroleum Geology, 2000, 17(2): 285–342.

    Article  Google Scholar 

  13. Reading, H. G., Richards, M., Turbidite systems in deep-water basin margings classified by grain size and feeder system, AAPG Bulletin, 1994, 78:792–822.

    Google Scholar 

  14. Dai, D. Y., Pang, X., The characteristics of petroleum geology of Zhu II depression of the Peal River Mouth Basin, China Offshore Oil and Gas (Geology), 1999, 13(3): 169–180.

    Google Scholar 

  15. Jin, Q. H., Geology and Petroleum Resource of the South China Sea (in Chinese), Beijing: Geology Press, 1989, 1–42

    Google Scholar 

  16. Xu, S. C., Sequence stratigraphic theory and practice in exploration prospect prediction: Examples from the Peal River Mouth Basin, China Offshore Oil and Gas (Geology), 1999, 13(3): 152–158.

    Google Scholar 

  17. Qin, G. Q., Investigation to the stratigraphy and construction of the comprehensive geologic columnar section of Cenozoic formation in Peal River Mouth Basin, China Offshore Oil and Gas (Geology), 2000, 14(1): 21–28.

    Google Scholar 

  18. Mohriak, W. U., Bassetto, M., Vieira, I. S., Crustal architecture and tectonic evolution of the Sergipe-Alagoas and Jacuípe basins, offshore northeastern Brazil, Teotonophysics, 1998, 288(1–4): 199–220.

    Article  Google Scholar 

  19. Qiu, X. L., Zhou, D., Xia, K. Y. et al., OBH experiment and crustal structure of Xisha Trough, South China Sea, Journal of Tropical Oceanography, 2000, 19(2): 9–18.

    Google Scholar 

  20. Yan, P., Zhou, D., Liu, Z. S., A crustal structure profile across the northern continental margin of the South China Sea, Tectonophysics, 2001, 338(1): 1–21.

    Article  Google Scholar 

  21. Yan, P., Liu, H. L., Analysis on deep crust sounding results in northern margin of South China Sea, Journal of Tropical Oceanography, 2002, 21(2): 1–11.

    Google Scholar 

  22. Mohriak, W. U., Rabelo, J. H. L., Matos, R. D. et al., Deep seismic reflection profiling of sedimentary basins offshore Brazil: Geological objectives and preliminary results in the sergipe basin, J. Geodynamics, 1995, 20(4): 515–539.

    Article  Google Scholar 

  23. Meissner, R., The “Moho” as the transition zone, Geophys Surveys, 1973,(1): 195–216.

  24. Clowes, R. M., Calvert, A. J., Eaton, D. W. et al., LITHOPROBE reflection studies of Archean and Proterozoic crust in Canada, Tectonophysics, 1996, 264: 65–88.

    Article  Google Scholar 

  25. Wu, F. Y., Deep seismic investigation for the contribution of the present-geotectonics, World Geology, 1994, 13(1): 117–128.

    Google Scholar 

  26. TRANSALP Working Group, First deep seismic reflection images of the Eastern Alps reveal giant crustal wedges and transcrustal ramps, Geophysical Research Letters, 2002, 29(10): 92–1-92–4.

    Article  Google Scholar 

  27. Nercessian, A., Mau.ret, A., Dos Reis, A. T. et al., Deep reflection seismic images of the crustal thinning in the eastern Pyrenees and western Gulf of Lion, J. Geodynamics, 2001, 31(2): 211–225.

    Article  Google Scholar 

  28. Pickup, S. L. B., Whitmarsh, R. B., Fowler, C. M. R. et al., Insight into the nature of the ocean-continent transition off West Iberia from a deep multichannel seismic reflection profile, Geology, 1996, 24(12): 1079–1082.

    Article  Google Scholar 

  29. Hopper, J. R., Dahl-Jensen, T., Holbrook, W. S. et al., Structure of the SE Greenland margin from seismic reflection and refraction data: Implications for nascent spreading center subsidence and asymmetric crustal accretion during North Atlantic opening, JGR, 2003, 108(B5): 2269.

    Article  Google Scholar 

  30. Nielsen, L., Balling, N., Jacobsen, B. H. et al., Seismic and gravity modelling of crustal structure in the Central Graben, North Sea, Tectonophysics, 2000, 328 (3–4): 229–244.

    Article  Google Scholar 

  31. Detric, R. S., White, R. S., Purdy, G. M., Crustal structure of north Atlantic fracture zones, Reviews of Geophysics, 1993, 31(4): 439–458.

    Article  Google Scholar 

  32. Yao, B. C., Crust structure of the northern margin of the South China Sea and its tectonic significance, Marine Geology & Quaternary Geology, 1998, 18(2): 1–16.

    Google Scholar 

  33. Ma, C. Q., The Moho, lower continental crust and magmatism, Earth Science Frontiers (China University of Geosciences, Beijing), 1998, 5(4): 201–208.

    Google Scholar 

  34. Liu, Y. X., Analysis Fracture Structure for South China Off-Shore (in Chinese), Beijing: Seismic Press, 1981: 19–47.

    Google Scholar 

  35. Hayes, D. E., Nissen, S. S., Buhl, P. et al., Through-going crustal faults along the northern margin of the South China Sea and their role in crustal extension, J. G. R., 1995, 100(B11): 22435–22446.

    Article  Google Scholar 

  36. Nissen, S. S., Hayes, D. E., Buhl, P. et al., Deep penetration seismic soundings across the northern margin of the South China Sea, J. G. R., 1995, 100(B11): 22407–22433.

    Article  Google Scholar 

  37. Yao, B. C., Zeng, W J. et al., The Geological Memoir of South China Sea Surveyed jointly by China and the USA (in Chinese), Wuhan: The Press of Chinese Geological University, 1994, 1–45.

    Google Scholar 

  38. Qiu, X. L., Zhao, M. H. et al., Ocean bottom Sseismomenter and onshore-offshore seismic experiment in northeastern South China Sea, Geotectonica et Metallogenia, 2003, 27(4): 295–299.

    Google Scholar 

  39. Zhou, D. et al., Geophysical data revealing subduction accretion belt of Mesozoic, Science in China, Ser. D, 2005, in print.

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Authors and Affiliations

  1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China

    Chunju Huang, Di Zhou, Zhen Sun & Hujun Hao

  2. China National Offshore Oil Corp., 510240, Guangzhou, China

    Changmin Chen

Authors
  1. Chunju Huang
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  2. Di Zhou
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  3. Zhen Sun
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  4. Changmin Chen
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  5. Hujun Hao
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Correspondence to Chunju Huang.

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Huang, C., Zhou, D., Sun, Z. et al. Deep crustal structure of Baiyun Sag, northern South China Sea revealed from deep seismic reflection profile. Chin.Sci.Bull. 50, 1131–1138 (2005). https://doi.org/10.1360/04wd0207

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  • DOI: https://doi.org/10.1360/04wd0207

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