| 新疆乌伦古富碱侵入岩成因探讨 |
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| 引用本文： | 赵振华,王中刚.新疆乌伦古富碱侵入岩成因探讨[J].地球化学,1996,25(3):205-220. |
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| 作者姓名： | 赵振华 王中刚 |
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| 作者单位： | 中国科学院广州地球化学研究所，中国科学院地球化学研究所，中国地质科学院矿床地质研究所，日本东京电气通信大学化学系 |
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| 基金项目： | 国家“305”项目，中国科学院资助 |
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| 摘 要： | 对沿乌伦古深断裂分布的钠闪石花岗岩、钾长花岗岩、闪长岩、碱性正长岩等富碱侵入体进行了较系统的岩石化学、微量元素、稀土元素地球化学及Ｏ、Ｐｂ、Ｓｒ、Ｎｄ同位素组成研究，确认它们为一类幔源重熔分异型富碱侵入岩类。在分析其物质来源、形成构造环境和成岩条件等特征基础上，用部分熔融、多阶段分离结晶和分离结晶－地壳混染等模型探讨了其成岩机理。
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| 关 键 词： | 侵入岩 成因 富碱 稀土族 同位素 |
STUDY ON PETROGENESIS OF ALKALI-RICH INTRUSIVE ROCKS OF ULUNGUR, XINJIANG |
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| Zhao Zhenhua, Wang Zhonggang, Zou Tianren, A. Masuda.STUDY ON PETROGENESIS OF ALKALI-RICH INTRUSIVE ROCKS OF ULUNGUR, XINJIANG[J].Geochimica,1996,25(3):205-220. |
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| Authors: | Zhao Zhenhua Wang Zhonggang Zou Tianren A Masuda |
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| Abstract: | Systematical studies of petrochemistry and geochemistry of trace elements and REE and the O, Pb, Sr, Nd isotopic compositions were made on the riebeckite granite, K-feldspar granite, diorite and alkali syenite distributed along the Ulungur deep fault. These rocks are recognized to belong to mantle-derived type alkali-rich intrusive rocks generated by remelting -differentiation of mantle materials. Based on the characteristics of their source materials,petrogenetic conditions and geological settings, the partial melting, multisequence fractional crystallization and assimilation fractional crystallization models have been proposed for the petrogenetic mechanism of these alkali-rich intrusive rocks. |
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| Keywords: | mantle-derived intrusive rock REE isotope petrogenesis Xinjiang |
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