Holocene sedimentary facies in coastal plain of the Song Ma Delta, Thanh Hoa Province

Vu Van Ha, Doan Dinh Lam, Nguyen Thuy Duong, Nguyen Thi Thu Cuc, Nguyen Minh Quang, Hoang Van Tha, Nguyen Thi Min, Dang Minh Tuan, Dang Xuan Tung, Giap Thi Kim Chi
Author affiliations

Authors

  • Vu Van Ha 1Institute of Geological Sciences, VAST, Hanoi, Vietnam 2Graduate university of Science and Technology, VAST, Hanoi, Vietnam
  • Doan Dinh Lam 1Institute of Geological Sciences, VAST, Hanoi, Vietnam 2Graduate university of Science and Technology, VAST, Hanoi, Vietnam
  • Nguyen Thuy Duong Hanoi University of Science, Vietnam National University
  • Nguyen Thi Thu Cuc Hanoi University of Science, Vietnam National University
  • Nguyen Minh Quang 1Institute of Geological Sciences, VAST, Hanoi, Vietnam 2Graduate university of Science and Technology, VAST, Hanoi, Vietnam
  • Hoang Van Tha Institute of Geological Sciences, VAST, Hanoi, Vietnam
  • Nguyen Thi Min Institute of Geological Sciences, VAST, Hanoi, Vietnam
  • Dang Minh Tuan 1Institute of Geological Sciences, VAST, Hanoi, Vietnam 2Graduate university of Science and Technology, VAST, Hanoi, Vietnam
  • Dang Xuan Tung University of Calabria, Italy
  • Giap Thi Kim Chi Institute of Geological Sciences, VAST, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0866-7187/41/3/13832

Keywords:

Holocene sedimentary facies, Song Ma Delta, Thanh Hoa coastal plain

Abstract

The Ma river delta located in the North Central of VietNam is the third largest ones in Vietnam following the Mekong Delta and the Red River Delta. However, there are not many researches on sedimentary. This study aims to determine the Characteristics of the Holocene sedimentary facies in coastal plain of the Song Ma Delta based on observation of sedimentary structure and analysis of grain size, diatom, flora, pollen and 14C dating collected for the drill core (LKTH2 borehole) from the coastal plain of the Song Ma river delta. Research results identify 08 facies consisting 02 facies of transgression period and 06 facies of regression period. During transgression period, 02 facies of tidal flat clayish silt and bay silty clay facies were formed. Of which, tidal flat clayish silt face was formed in 7,883 ± 43 14C yr BP. After the maximum flooding of the sea, the delta was initiated and 06 facies were formed during the regression period i.e. prodelta silty clay, delta front clayish silt, tidal flat sandy - silty clay, sand ridge, lagoonal sandy silty clay, and flood plain silty clay facies. The tidal flat sandy - silty clay facies occurred in 6.951± 38 14Cyr BP caused by sea level fall and the coastline was identified around the LKTH2 bore hole at that time. Integration of sedimentary facies of the sand ridge and lagoonal sandy silty clay facies shows that the Song Ma Delta was dominated by wave process during its evolution.

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Published

20-05-2019

How to Cite

Ha, V. V., Lam, D. D., Duong, N. T., Cuc, N. T. T., Quang, N. M., Tha, H. V., Min, N. T., Tuan, D. M., Tung, D. X., & Chi, G. T. K. (2019). Holocene sedimentary facies in coastal plain of the Song Ma Delta, Thanh Hoa Province. Vietnam Journal of Earth Sciences, 41(3), 229–239. https://doi.org/10.15625/0866-7187/41/3/13832

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