| 湖北观子山硬玉钙霞正长岩初步研究 |
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| 引用本文： | 李,石.湖北观子山硬玉钙霞正长岩初步研究[J].岩石矿物学杂志,1990,9(1):22-30. |
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| 作者姓名： | 李 石 |
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| 作者单位： | 湖北省地质实验研究所 |
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| 摘 要： | 观子山侵入体从岩体中心到边部，由硬玉钙霞正长岩、硬玉正长岩和黑云角闪正长岩组成。本文着重讨论硬玉钙霞正长岩的岩石学、矿物学、岩石化学、REE的地球化学、时代及岩石成因。据Rb-Sr等时线测定，其年令值为306Ma，说明它形成于海西期。根据产状、FeO/MgO,^δSr/^δSr（i）、REE分配模式以及形成硬玉的压力温度条件，足以证明硬玉钙霞正长岩的成因与上地幔物质有关。
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| 关 键 词： | 硬玉钙霞正长岩 铷－锶等时线 湖北 岩石学 REE地球化学 成因 |
A Preliminary Study on a Jadeite-cancrinite Syenite from Guanzishan, Hubei Province |
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| Li Shi.A Preliminary Study on a Jadeite-cancrinite Syenite from Guanzishan, Hubei Province[J].Acta Petrologica Et Mineralogica,1990,9(1):22-30. |
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| Authors: | Li Shi |
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| Institution: | Hubei Institute of Geological Experiment |
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| Abstract: | The Guanzishan intrusion located in the boundary between Suizhou city and Zaoyang county, Hubei Province, consists of jadeite-cancrinite syenite, jadeite syenite and biotite hornblende syenite from centre of the intrusion to margin. This paper stresses the study on the petrology, mineralogy,petrochemistry, REE geochemistry, age and petrogenesis of the jadeite-cancrinite syenite. Its age determined by Rb-Sr isochron is 306 Ma, suggesting that it was formed at Hercynian. On the basis of the occurrence, FeO/MgO, ~(87)Sr/~(86)Sr(i), REE distribution pattern and P. T. conditions of jadeite-forming it is provable enough that the jadeite-cancrinite syenite is genetically related to the upper mantle materials. |
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| Keywords: | jadeite-cancrinite syenite Guanzishan Hubei |
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