The process of preparation and analysis of calcareous nannofossil sample, and application for marine sediments of Soc Trang province

Nguyen Thi Hong Nhung, Nguyen Thi Thuy, Nguyen Viet Hien, Nguyen Huu Manh
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Authors

  • Nguyen Thi Hong Nhung Institute of Geosciences and Mineral Resources, Hanoi, Vietnam
  • Nguyen Thi Thuy Institute of Geosciences and Mineral Resources, Hanoi, Vietnam
  • Nguyen Viet Hien Institute of Geosciences and Mineral Resources, Hanoi, Vietnam
  • Nguyen Huu Manh Institute of Geosciences and Mineral Resources, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/19/4/12676

Keywords:

Calcareous nannofossils, process of preparation and analysis, Soc Trang coastal area.

Abstract

Calcareous nannofossils are very small microfossils composed of calcium carbonate. They are very good biostratigraphic markers within marine sediments by covering the Jurassic to present. The standard preparation of a sample for nannofossil analysis requires the collection of the largest quantity and the best fossils. Sample preparation accords to the following steps: i. Pounding sample; ii. Eliminating organic matter; iii. Washing sample; iv. Filter sample through the sieve; v. Eliminating clay; vi. Drying sample in an incubator; vii. Packing sample. Sample analysis accords to the following steps: i. Preparation of smear - slide; ii. Observation of morphology; iii. Determination; iv. Taking photo; v. Evaluating overall preservation and abundance of fossils; vi. Making analysis result sheet. This process is applied to study calcareous nannofossils within marine sediments in Soc Trang province. It makes much clear to understand middle Pleistocene-early Holocene ecosystem of calcareous nannofossil. In conclusion, this assemblage belongs to NN21 zone by the present of Emiliania huxleyi and Gephyrocapsa oceanica.

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References

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Published

27-03-2020

How to Cite

Nhung, N. T. H., Thuy, N. T., Hien, N. V., & Manh, N. H. (2020). The process of preparation and analysis of calcareous nannofossil sample, and application for marine sediments of Soc Trang province. Vietnam Journal of Marine Science and Technology, 19(4), 537–544. https://doi.org/10.15625/1859-3097/19/4/12676

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