摘要
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。
We analyzed the sequence stratigraphy and biostratigraphy （based on the abundance of foramini- fers and calcareous nannofossils） of 27 drill cores in the Yinggehai-Qiongdongnan Basin. Twenty third-order sequences were recognized in Oligocene TB1. 1 to Quaternary TB3.9 strata. Based on the abundance and diversity of microfossils, assemblage characteristics, and estimated water depths, paleoenvironments were reconstructed for reservoir sandstones in $29-28 under the ＂fault No. 1＂ zone. The study establishes a sequence stratigraphic framework and a sedimentary facies model for the Yinggehai-Qiongdongnan Basin.
出处
《地层学杂志》
CSCD
北大核心
2013年第4期410-416,共7页
Journal of Stratigraphy
基金
国家“十二五”重大科技攻关项目(No.2011ZX05025-002)资助
关键词
层序地层
有孔虫
钙质超微化石
古环境
古近纪
新近纪
第四纪
莺-琼盆地
sequencestratigraphy, foraminifera, calcareous nannofossil, paleoenvironment, Paleogene, Neogene, Quaternary, Yinggehai-Qiongdongnan Basin
