检索结果-南通市图书馆

Tracing crustal contamination of the Cenozoic basalts with OIB-affinity in northern marginal region of North China Craton:An os perspective

引用

China Geology 2021年第4期4卷 593-599页

作者： Zhuang Li Bin Chen State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China

The Cenozoic basalts with OIB-affinity in northern marginal region of the North China Craton are thought to experience minor even no crustal contamination during the magma *** whole-rock Sr-Nd-Pb-Hf isotopes are attributed to a two-component mixing between depleted and enriched mantle sources,while the major element variations are controlled by the fractional crystallization of olivine and ***,in this study,the new os isotopic data proposes an opposite model for the Cenozoic basalts in northern marginal region of the North China *** this model,the Jining basalts were contaminated by the Archean mafic rocks during the magma storage and *** crustal contamination process is supported by(1)the highly radiogenic os isotopic compositions,and(2)the positive correlation between 187os/188os and 1/os of the Jining *** modeling the os isotopic composition of the basalts,an incorporation ofos isotopic compositions of the Chifeng basalts suggest negligible crustal *** isotopic data acts as an indicator of crustal contamination during magma evolution,providing us a novel insight into the evolution of the intra-continental OIB-like basalts worldwide.

关键词： Crustal contamination OIB-like basalt os isotope os concentration Geological survey engineering Inner Mongolia North China Craton China

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

osmium concentrations and 187os/188os ratios of three sediment reference materials

Osmium concentrations and 187Os/188Os ratios of three sedime...

引用

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： GUODONG ZHENG KATSUHIKO SUZUKI YosHIKI MIYATA HIRosHI SHIMIZU Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Sciences Department of Earth and Planetary Systems Science Graduate School of ScienceHiroshima UniversityHigashi-HiroshimaHiroshima 739-8526Japan Institute for Frontier Research on Earth Evolution(IFREE) Japan Agency for Marine-Earth Science and Technology(JAMSTEC)Yokosuka 237-0061Japan Precambrian Ecosystem LaboratoryJapan Agency for Marine-Earth Science and Technology(JAMSTEC)Yokosuka 237-0061Japan Institute for Frontier Research on Earth Evolution(IFREE) Japan Agency for Marine-Earth Science and Technology(JAMSTEC)Yokosuka 237-0061Japan Center for Chronological Research Nagoya UniversityFuro-choChikusaNagoya 464-8602Japan

os/os ratios and osmium concentrations were analyzed in sedimentary reference materials JSd-3,JMS-1,and JMS-2,issued by the Geological Survey of Japan,using the isotope dilution method with negative thermal ionization mass spectrometry(ID-N-TIMS).The chemical procedures used in this study are based on Carius tube digestion combined with carbon tetrachloride extraction to separate *** obtained os/os ratios of JSd-3,JMS-1,and JMS-2 were 0.941- 1.149,0.3894-0.465,and 0.747-0.848,respectively,and their os abundances were 27.07-39.32 ppt,80.8-106.6 ppt,and 281-317.2 ppt,*** among the samples presumably reflect differences in sources and depositional *** os isotopic ratios and abundances were variable within individual *** relative 95%confidence intervals of os concentrations and isotopic ratios were respectively 13%and 6.2%for JSd-3,15%and 9.8%for JMS-1,and 4.3%and 4.2%for *** variations probably reflect the heterogeneity of the original rock of each reference *** concentration and high isotope ratio of JSd-3 probably results from the derivation of the original rocks from continental components with low os abundance and elevated os/*** of anthropogenic os were inferred in JMS-1,a nearshore sediment from an urbanized locality,which had high os contents and relatively low os isotopic *** elevated os concentrations and high os/os in JMS-2,a pelagic clay,may reflect the scavenging of os in seawater into Mn-Fe oxyhydroxides deposited on the seafloor.

关键词： os concentration os isotope sediment reference material Geochemical Survey of Japan heterogeneous os

来源： cnki会议评论

在线全文

cnki会议

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

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

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：