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

作　　者：费安玮[1] 

机构地区：[1]石油大学地球科学系

出　　处：《石油与天然气地质》1997年第1期59-64,共6页Oil & Gas Geology

摘　　要：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Ｃａｎｄｏｎａ，Ｈｕａｂｅｉｎｉａ及Ｃａｎｄｏｎｉｅｌａ并以浅水型的Ｃａｎｄｏｎａ占优势；孢粉含量通常高于藻类；藻类相继以疑源类Ｇｒａｎｏｄｉｓｃｕｓ，Ｌｅｉｏｓｐｈａｅｒｉｄｉａ或甲藻类Ｐａｒａｂｏｈａｉｄｉｎａ，Ｃｏｎｉｃｏｉｄｉｕｍ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 Candona,Huabeinia and Candoniella with shallow water Candona 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 Granodiscus,Leiosphaeridia or Parabohaidina and Conicoidium All of the fossils reflect fresh to brackish water in littoral to shallow lake environment

关 键 词：扇三角洲 湖体背景 微体古生物 石油地质 

分 类 号：P618.130.2[天文地球—矿床学]