东营凹陷沙三晚期古生态与古环境分析

1996年 18卷 第1期
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PALEOENVIRONMENT AND PLLEOECOLOGY OF DONGYING SAG DURING LATE SHAHEJIE Ⅲ(OLIGOCENE)
郭秋麟 李蓬 倪丙荣
Guo Qiulin Li Peng Ni Bingrong
石油勘探开发研究院 北京100083
Research Institute of Petroleum Exploration and Development, Beijing
本文通过分析介形类化石组合与生态特征,结合优势度与信息函数分异度分析,进而探讨东营凹陷的古环境。认为东营凹陷沙三晚期存在以下5种环境:冲积-滨湖;冲积-三角洲平原;浅湖-三角洲前缘;较深湖-前三角洲和湖湾环境。
The paleoenviroment of Dongying Sag is studied by focusing on the features of Ostracoda fossil community and paleoecology, especially the dominance(dm) and diversity(Hs)of Ostracoda. The five enviroments in the late shahejie Ⅲ(Oligocene) of Dongying Sag are distinguished: 1) floodplain-coastal lake; 2) alluvial delta plain; 3) shallow lake-delta fron; 4)sub-deep lake-prodelda ;5)lake bay.
古生态; 古环境; 分异度; 东营凹陷;
https://doi.org/10.11781/sysydz199601057