Using analysed foraminiferal parameters for evaluating the changes of foraminiferal assemblage and determining well depositional environment in Nam Con Son basin

  • Cao Dang Hoang Yen Vietnam Petroleum Institute
  • Nguyen Thi Thu Hien Vietnam Petroleum Institute
  • Nguyen Thi Tham Vietnam Petroleum Institute
DOI: https://doi.org/10.25073/petrovietnam%20journal.v4i0.146
Keywords: Foraminifera, parameters of foraminifera analysis, abundance and diversity index, planktonic/benthonic ratio, benthonic groups, Nam Con Son basin

Abstract

In the foraminiferal study, the parameters of foraminifera analysis include percentage of remaining sandstone, abundance and diversity index, planktonic/benthonic ratio and the variation of benthonic groups are useful indicators for evaluating the changes of foraminifera, depositional environment and correlation work. A total of 129 ditch cuttings were used and processed within the depth range of 1.690 - 4.535m. 165 genera were identified in the sediments of Nam Con Son basin, including 51 planktonic, 106 benthonic and 8 larger foraminiferal species. By using these parameters in this study, the Miocene stratigraphic range has been defined in detail, from N5 to N18, and the depositional environment is indicated from transitional condition in Early Miocene to outer neritic and upper bathyal in Late Miocene. The study can help to improve the results of further biostratigraphy research, especially in high resolution biostratigraphy.

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Published
2017-04-24
How to Cite
Dang Hoang Yen, C., Thi Thu Hien, N., & Thi Tham, N. (2017). Using analysed foraminiferal parameters for evaluating the changes of foraminiferal assemblage and determining well depositional environment in Nam Con Son basin. Petrovietnam Journal, 4, 37 - 44. https://doi.org/10.25073/petrovietnam journal.v4i0.146
Issue
Vol 4 (2017)
Section
Articles

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