渤海海域垦利16-1区块沙河街组古生物化石序列的发现及其意义  

MICROPALEONTOLOGICAL SEQUENCE FROM THE SHAHEJIE FORMATION OF THE KL16-1 BLOCK IN THE BOHAI BAY AND ITS SIGNIFICANCE

作　　者：魏文艳 曲日涛 杨雄涛 陈书伟 赵都菁 邱琨祁 姚雅琴 WEI Wenyan;QU Ritao;YANG Xiongtao;CHEN Shuwei;ZHAO Dujing;QIU Kunqi;YAO Yaqin(CNOOC Energy Tech-Drilling&Production Co.,Tianjin 300452)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津塘沽300452

出　　处：《微体古生物学报》2020年第4期328-338,共11页Acta Micropalaeontologica Sinica

摘　　要：渤海海域垦利16-1地区沙河街组微体古生物非常发育,大量的数据分析表明,该地区沙河街组具有沉积环境变化快,化石类型丰富,生物序列更替快的特点,沙四段—沙一段共发育四个孢粉组合、九个藻类组合和四个介形类组合。本文对化石带的特征进行了描述,分析了沟鞭藻类、介形类的演化规律,结合不同化石类型的沉积环境特征,讨论了该地区水体的盐度、深度的变化和演化特征。Abundant microfossils have been found widely from the Shahejie Formation of the KL16-1 Block.Through the analysis of a large number of reports and data,we found that the evolutionary changes of fossils and depositional environment were rapid and complicated.Microfossils of the Shahejie formation are divided into 4 palynological assemblages,9 dinoflagellates and acritarchs zones and 4 ostracod assemblages.The micropaleontological assemblages and depositional environment were discussed.

关 键 词：孢粉 沟鞭藻类 介形类 沉积环境 沙河街组 渤海海域 

分 类 号：Q911.2[天文地球—古生物学与地层学] P736.22[生物学—古生物学]