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The chapter is devoted to assessing the possibility of fault reactivation in the Earth’s crust of the South China Sea. To solve this problem, seismic data from scientific organizations and exploration companies, as well as regional seismological data for the last 100 years, including the location of epicenters and earthquake focal mechanisms, were used. They became the main source of information for calculating the stress field in the Earth’s crust in the South China Sea. Based on the results of the calculations, a map of the present-day stress field was constructed. Regions with compression and extension modes, zones with different fault dislocation tendencies, and zones with different horizontal and vertical displacement tendencies were identified. A prognostic map of possible reactivation of different regional fault systems is constructed, and areas with different probabilities of tectonic fault reactivation in the studied region are selected.

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Assessment of the Fault Reactivation Possibility in the Earth’s Crust of the South China Sea

  • 章节

  • 发表日期：

    2025年

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  • Tran Tuan Dung,
  • Ruslan G. Kulinich,
  • Bui Cong Que,
  • Nguyen Quang Minh,
  • Nguyen Van Sang,
  • Tran Tuan Duong,
  • Nguyen Trung Thanh,
  • Nguyen Ba Dai,
  • Tran Trong Lap,
  • Nguyen Kim Dung,
  • Dang Xuan Tung,
  • Dao Dinh Cham,
  • Nguyen Thai Son

摘要

The chapter is devoted to assessing the possibility of fault reactivation in the Earth’s crust of the South China Sea. To solve this problem, seismic data from scientific organizations and exploration companies, as well as regional seismological data for the last 100 years, including the location of epicenters and earthquake focal mechanisms, were used. They became the main source of information for calculating the stress field in the Earth’s crust in the South China Sea. Based on the results of the calculations, a map of the present-day stress field was constructed. Regions with compression and extension modes, zones with different fault dislocation tendencies, and zones with different horizontal and vertical displacement tendencies were identified. A prognostic map of possible reactivation of different regional fault systems is constructed, and areas with different probabilities of tectonic fault reactivation in the studied region are selected.