检索结果-南通市图书馆

Palaeoclimate of the Paleogene Dongying Formation in Bozhong Sag of Bohai Bay Basin

Petroleum Research 2021年第4期6卷 368-378页

作者： Juan Zhang Chenchen Wang Jingmin Wang Linbo wang Yunqian Jia Rongrong Hu College of Earth Sciences Yangtze UniversityWuhan430100HubeiChina Laboratory of Reservoir Microstructure Evolution and Digital Characterization Wuhan430100HubeiChina Cooperative Innovation Center of Unconventional Oil and Gas Yangtze UniversityWuhan430100China School of Petroleum Engineering Yangtze UniversityWuhan430100China

It was showed that the sedimentary environment of lacustrine basins is more susceptible to basin size than that of marine basins,leading to frequent changes in sedimentary environment and large differences in sediment supply and types.Based on the comprehensive analysis of clay minerals,spore pollen,major elements and trace elements,the sedimentary environment of Dongying Formation and its evolution in Bozhong Sag were studied.The results showed that during the sedimentary period of Dongying Formation,the study area was in a subtropical warm and humid climate as a whole.In addition,the vertical distribution of spore pollen and algae was divided into four zones and each one represents different sedimentary environments.Combination zone I is characterized by a large number of spore pollen and algae,including juglanspollenites verus,ulmipollemites minor,abietineaepollenites and pinuspollenites,taxodiaceaepollenites hiatus,leiosphaeridia and granodiscus,and it indicates a relatively hot and dry climatic;Combination zone II mainly contains juglanspollenites verus,ulmipollemites minor,abietineaepollenites and pinuspollenites,pediastrum and leiosphaeridia.Compared with I,the number of spore pollen and algae decreases,but the number of pediastrum increases a lot,which represents warm and humid climate.The combination zone III is dominated by abietineaepollenites and pinuspollenites and chaetosphaeridium,and the species and quantity decrease significantly.It indicates a relatively hot and humid climate at that time.Combination zone IV contains a small amount of spore pollen and algae,and it means the climate was warm and humid at that period.The frequent changes of sedimentary environment in lacustrine basins are influenceded by regional tectonic environment and basin scale.Using S/A and E-T parameters,the paleoclimate in the study area was delineated and 10 sedimentary environment interfaces were identified,which further illustrated the characteristics of frequent fluctuations of sedimentary environment in lacustrine bas

关键词： Clastic rocks spore pollen assemblage zone Sedimentary environment Bozhong sag Lacustrine basin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：