检索结果-南通市图书馆

Geochemical characteristics and geological significance of chert nodules in Qixia formation,Pingding Mountain, lower Yangtze Plate

引用

Journal of Mountain Science 2021年第1期18卷 88-100页

作者： LI Jun CHEN Lu-wang HAOChun-ming ZHANG Jie CHEN Song GUI He-rong School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230000China National Engineering Research Center of Coal Mine Water Hazard Controlling(Suzhou University) Suzhou 234000China School of Resources and Civil Engineering Suzhou UniversitySuzhou 234000China North China Institute of Science and Technology Xueyuan Street 467Sanhe 065201China

The Permian is an important period for the deposition of siliceous rocks on a global scale,but the genesis of chert is still *** better understand the mechanism of chert nodules deposition from Qixia Formation(P1q)(Lower Yangtze Plate,China),we analyzed the major,trace and rare earth elements of these chert nodule samples(CN)and surrounding rock samples(SR)using Inductively Coupled Plasma Mass Spectrometry(ICPMS)and X-ray fluorescence(XRF)*** redox state,siliceous sources and depositional environment analysis show that CN have higher contents of SiO2,Fe2O3 and MnO comparing with SR,and their geochemical properties are *** and rare earth elements characteristics reveal that nodules were deposited under the action of biochemistry in the basin,no terrigenous materials contamination was observed and the contribution of upwelling was *** Al/(Al+Fe+Mn),Fe/Ti and Al-Fe-Mn discrimination diagram indicated the chert nodules are influenced by hydrothermal *** from redox-sensitive elements such as Th,U,V and Sc suggests that nodules were deposited in a reducing *** the convective mixing of hydrothermal action and normal seawater,excessive dissolved silicon and nutrients are absorbed and precipitated by biological action,and then transported by upwelling to shallow water for *** the evidence comes from the trace elements enrichment characters,Rare earth elements and Y(REY)distribution patterns and La/La^(*),Ce/Ce^(*),Eu/Eu^(*),LREE/HREE,Y/Ho and∑REE characteristics.

关键词： cherts nodule Geochemistry Siliceous limestone PingdingMountain Depositional environment Silica source

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

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：