Holocene sedimentary facies in the incised valley of Ma River Delta, Vietnam

Nguyen Minh Quang, Vu Van Ha, Nguyen Thi Min, Ngo Thi Dao, Nguyen Thi Thu Cuc, Dang Minh Tuan, Dang Xuan Tung, Tran Thi Man, Nguyen Thi Thao
Author affiliations


  • Nguyen Minh Quang 1-Institute of Geological Sciences, VAST, Vietnam; 2-Graduate University of Science and Technology, VAST, Vietnam
  • Vu Van Ha 1-Institute of Geological Sciences, VAST, Vietnam; 2-Graduate University of Science and Technology, VAST, Vietnam
  • Nguyen Thi Min Institute of Geological Sciences, VAST, Vietnam
  • Ngo Thi Dao Institute of Geological Sciences, VAST, Vietnam
  • Nguyen Thi Thu Cuc Hanoi University of Sciences, VNU
  • Dang Minh Tuan Institute of Geological Sciences, VAST, Vietnam
  • Dang Xuan Tung Institute of Geological Sciences, VAST, Hanoi, Vietnam
  • Tran Thi Man Institute of Geological Sciences, VAST, Vietnam
  • Nguyen Thi Thao 1-Graduate University of Science and Technology, VAST, Vietnam; 2-Institute of Geography, VAST, Vietnam




Holocene sedimentary facies, ancient environments, sea level change, the coastal Thanh Hoa area


Holocene sediment facies in the incised valley of the Ma River Delta were clarified by using analysis of LKTH6 core (32 m depth) such as sedimentary structure analysis, grain-sized, micro-paleontological (foraminifera, spore and pollen, and diatom), clay minerals characteristics, and Radiocarbon dating (14C). Ten sedimentary facies were identified, including (1) flood plain silty clay facies, (2) Salt marsh clayey silt facies, (3) Tidal flat sandy silty clay facies, (4) Tidal creek and tidal branch silty clayey sand facies, (5) Bay silty clay facies, (6) Prodelta silty clay facies, (7) Delta front silty sand facies, (8) Mouth bar sand facies, (9) Point bar silty sand faces, and (10) Alluvial plain silty clay facies.

The sea level change after the last glacial was recorded by sediment facies and radiocarbon dating (14C). It showed that before 9380 yr. BP, the transgression concurrent with the base-level rising resulted in the incised valley filled up by fluvial sediment. The transgression drowned incised valley was recorded by the initial marine flooding surface which was identified by salt marsh sedimentary facies in the valley at 9380 yr. BP, and the drowning process of the incised valley completely around 8000 yr. BP. After 8000 yr. BP, the sedimentary accumulation exceeded the sea level rise rate resulting in the delta being formed.



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How to Cite

Nguyen Minh, Q., Vu Van, H., Nguyen Thi, M., Ngo Thi, D., Nguyen Thi Thu, C., Dang Minh, T., Dang Xuan, T., Tran Thi, M., & Nguyen Thi, T. (2023). Holocene sedimentary facies in the incised valley of Ma River Delta, Vietnam . Vietnam Journal of Earth Sciences. https://doi.org/10.15625/2615-9783/18923




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