检索结果-南通市图书馆

Geochronology and geochemistry of Daerlong granitic complex in Linkou area,eastern Heilongjiang:petrogenesis and tectonic implications

引用

Global Geology 2024年第4期27卷 177-195页

作者： QIN Tao FANG Jie ZHANG Yanlong DING Xin YU Guanying YANG Hao College of Earth Sciences Jilin UniversityChangchun 130061China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

The Daerlong granitic complex in Linkou area is located at the convergence position of the Jiamusi and Songliao blocks.A systematic study of field geology,petrography,zircon U-Pb dating and wholerock major and trace elements has been conducted for the Daerlong granitic complex,aiming to determine its formation age,petrogenesis and tectonic setting,and further constrain the nature and evolution of the Mudanjiang *** and petrographic observations show that the Daerlong granitic complex mainly consists of three rock types from old to young,i.e.,biotite granodiorite,syenogranite and *** data suggest that all the types of granitoids are high in silicon,rich in potassium,moderate in aluminum(A/CNK=0.94-1.10),poor in iron and magnesium,rich in LILEs and depleted in HFSEs,belonging to the weakly peraluminous high-K calc-alkaline *** with mineral assemblages and geochemical discrimination diagrams,it can be determined that the studied granitoids are of igneous crustderived I-type origin,which underwent strong fractional crystallization and crystal accumulation during magmatic *** LA-ICP-MS U-Pb dating results show that the different types of granitoids were emplaced in a wide age range from 301 to 240 Ma,indicating a long-lived late Carboniferous to Middle Triassic granitic magmatism occurred in the western Jiamusi *** Daerlong granitoids have similar geochemical characteristics of subduction-related igneous *** the spatial and temporal distribution of late paleozoic to early mesozoic igneous rocks within eastern Heilongjiang Province,it is concluded that the Daerlong granitic complex was formed in an active continental margin setting rather than a continental rift *** results suggest that the Mudanjiang Ocean might not be a limited ocean evolved from the rifting of the unified Jiamusi-Songnen microcontinent.

关键词： granitic complex Jiamusi Block late paleozoic-early mesozoic petrogenesis tectonic setting

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：