高尚堡扇三角洲湖体背景的微体古生物分析

ANALYSIS OF MICROPALEONTOLOGY IN LACUSTRINE FAN DELTA OF GAOSHANGPU

费安玮

Fei Anwei

采用介形类与孢粉、藻类研究相结合,定性与定量分析相结合的微体古生态学方法,分析高尚堡油田沙河街组三段扇三角洲沉积体在湖盆中所处位置及古环境。该扇三角洲主要发育在滨、浅湖环境,介形类主要成分为,及并以浅水型的占优势;孢粉含量通常高于藻类;藻类相继以疑源类,或甲藻类,为主体,总体上代表了淡微咸水的滨、浅湖环境。

According to the study made on the paleoecology of Ostracoda,sporo pollen and algal fossils collected from the fan delta of the third member of the Shahejie Formation in Gaoshangpu Oilfields,it is considered that the fan delta developed in littoral shallow lake environment The main elements of Ostracoda are ,Huabeinia and with shallow water as the the predominant one The content of the sporo pollen is usually higher than that of algae;the main elements of the algae are or and All of the fossils reflect fresh to brackish water in littoral to shallow lake environment

10.11743/ogg19970111