| Trace Element Geochemistry of Cenozoic Volcanic Rocks in Shandong Province |
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| 作者姓名： | 陈道公 李彬贤 等 |
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| 作者单位： | [1]DepartmentofEarthandSpaceScience,UniversityofScienceandTechnologyofChina,Hefei230026 [2]DepartmentofEart,UniversityofScienceandTechnologyofChina,Hefei230026 |
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| 摘 要： | The Cenozoic volcanic rock of Shandong Province are mainly alkalic and strongly alkalic basaltic rocks.The Contents of major and trace elements including transitional,incompatible and rare-earth elements were determined.The chemical characterisitics of major and trace elements indicate that these basaltic rocks were derived from a mantle source and probably represent a primary magma,I,e.,unmodifiecd partical melts of mantle peridotite in terms of Mg values,correlatione between P2O5 and Ce,Sr,Ni and Rb concentrations,mantle xenoliths,etc.The abundances of trace elements vary systematically from west to east.The compatible transition elements such as Co,Ni,and Cr show a remarkable depletion,whereas the incompatible and rare-earth elements are abundant as viewed from the chondrite-nor-malized patterns.The chemical composition and correlation are consistent with the tectonic setting.According to the batch and fractional partial melting theory,the trace element contents of Shandong volcanic rocks can be calculated from the two-component mixing model.
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| 关 键 词： | 示踪元素 地球化学 新生代 火山岩 山东 地质构造 |
Trace element geochemistry of Cenozoic volcanic rocks in Shandong Province |
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| Daogong,Chen,Binxian,Li,Xun,Zhang.Trace Element Geochemistry of Cenozoic Volcanic Rocks in Shandong Province[J].Chinese Journal of Geochemistry,1989,8(3):254-266. |
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| Authors: | Daogong Chen Binxian Li Xun Zhang |
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| Institution: | (1) Department of Earth and Space Science, University of Science and Technology of China, 230026 Hefei |
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| Abstract: | The Cenozoic volcanic rocks of Shandong Province are mainly alkalic and strongly alkalic basaltic rocks. The contents of major
and trace elements including transitional, incompatible and rare-earth elements were determined. The chemical characteristics
of major and trace elements indicate that these basaltic rocks were derived from a mantle source and probably represent a
primary magma, i. e., unmodified partical melts of mantle peridotite, in terms of Mg values, correlations between P2O5 and Ce, Sr, Ni and Rb concentrations, mantle xenoliths, etc. The abundances of trace elements vary systematically from west
to east. The compatible transition elements such as Co, Ni, and Cr show a remarkable depletion, whereas the incompatible and
rare-earth elements are abundant as viewed from the chondrite-nor-malized patterns. The chemical composition and correlation
are consistent with the tectonic setting.
According to the batch and fractional partial melting theory, the trace elemant contents of Shandong volcanic rocks can be
calculated from the two-component mixing model. |
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