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利用莺—琼盆地钻井中丰富的有孔虫、钙质超微化石等微体古生物资料,对研究区27口钻井层序进行了识别研究,共识别出渐新世TB1.1至第四纪TB3.9等20个三级层序。并通过对微体生物化石丰度、分异度、组合特征、特征种属及古水深估算分析,讨论了东方区黄流组一段储集砂体、“①号断层带”下降盘S29-S28楔形地质体及中央峡谷水道砂体沉积古环境。研究结果对建立莺—琼盆地层序地层格架及判别沉积相类型具重要的借鉴意义。
Based on the microfossil paleontological data rich in foraminifer and calcareous microfossils from the drilling in Ying-Qiong Basin, 27 drilling sequences in the study area were identified and identified as Oligocene TB1.1 to Quaternary TB3.9 and other 20 third-level sequence. By analyzing the abundance, differentiation, assemblage characteristics, characteristic species and palaeo-depth of microflora, we discuss the first member of the Huangliu Formation in the Eastern Region, such as S29 S28 wedge-shaped geological body and the central canyon channel sedimentary paleoenvironment. The research results have important reference significance for establishing the sequence stratigraphic framework and distinguishing sedimentary facies in Ying-Qiong basin.