Structural - tectonic update of the central Vietnam margin based on analysis of the merged gravity - magnetic and regional seismic data

  • Nguyen Thanh Tung Vietnam Petroleum Institute
  • Nguyen Trung Hieu Vietnam Petroleum Institute
  • Cao Dinh Trong Institute of Geophysics
  • Bui Huy Hoang Vietnam Petroleum Institute
  • Duong Van Thanh Institute of Geophysics
  • Nguyen Quang Tuan Vietnam Petroleum Institute
  • Bui Quang Huy Vietnam Petroleum Institute
  • Nguyen Danh Lam Vietnam Petroleum Institute
DOI: https://doi.org/10.47800/PVJ.2022.09-02
Keywords: Merged gravity - magnetics, structural zones, central Vietnam margin

Abstract

The central Vietnam margin is part of the western continental margin of the Vietnamese East Sea - the transition zone from the Indochina continental block to the true oceanic crust. In this paper, the authors present new results from merging and interpreting gravity and magnetic data from different sources in combination with 2D seismic and Ocean Drilling Program well data for the central Vietnam margin.
The results illustrate the reliability of the merged gravity - magnetic data in regional structural analysis and tectonic division. Five structural layers are vertically identified and characterised by density and thickness. Spatially, six tectonic zones are defined with different Bourguer and magnetic anomaly background values: the boundaries between these zones are clearly delineated by sudden changes of these values. In addition, development signs and extent of the Tuy Hoa Shear Zone on basement rocks are also better resolved compared to the earlier seismic data.  

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Published
2022-10-11
How to Cite
Nguyen , T. T., Nguyen , T. H., Cao, D. T., Bui , H. H., Duong , V. T., Nguyen , Q. T., Bui , Q. H., & Nguyen , D. L. (2022). Structural - tectonic update of the central Vietnam margin based on analysis of the merged gravity - magnetic and regional seismic data. Petrovietnam Journal, 9, 9 - 15. https://doi.org/10.47800/PVJ.2022.09-02
Issue
Vol 9 (2022)
Section
Articles

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