| 花岗岩类中的铁、钛副矿物及其成因意义 |
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| 引用本文： | 王德荫,陈鸣,张成江.花岗岩类中的铁、钛副矿物及其成因意义[J].成都理工大学学报(自然科学版),1990(4). |
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| 作者姓名： | 王德荫 陈鸣 张成江 |
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| 作者单位： | 成都地质学院三系
(王德荫，陈鸣)，成都地质学院三系(张成江) |
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| 摘 要： | 通过对花岗岩类中的铁、钛等副矿物特征及其与花岗岩成岩物质来源和形成条件等关系的研究,提出铁、钛副矿物是复成因多世代的,它们形成于一定的物理化学条件下,具有重要的成因意义。其中磁铁矿和榍石代表偏高的氧逸度和富钙的介质,钛铁矿代表偏低的氧逸度和贫钙的介质。钛铁矿能在氧速度变化幅度较大的范围内形成和稳定。
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| 关 键 词： | 磁铁矿 钛铁矿 榍石 氧逸度 花岗岩 成因类型 |
THE Fe-Ti ACCESORY MINERALS IN GRANITOIDS AND THEIR GENETIC SIGNIFICANCE |
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| Wang Deyin,Chen Ming,Zhang Chengjiang.THE Fe-Ti ACCESORY MINERALS IN GRANITOIDS AND THEIR GENETIC SIGNIFICANCE[J].Journal of Chengdu University of Technology: Sci & Technol Ed,1990(4). |
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| Authors: | Wang Deyin Chen Ming Zhang Chengjiang |
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| Institution: | Wang Deyin;Chen Ming;Zhang Chengjiang |
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| Abstract: | Based on the characteristies of Fe-Ti accesory minerals in granitic rocks, the relation be-tween accesory minerals and source of diagenetic materials as well as accesory minerals and diagenticenvi-ronmet, it is suggested that Fe-Ti accesory minerals are of composite genesis and polygeneration.They are formed under fixed physicochemical conditions, and of important genetic significance. Mag-netite and titanite stand for the relatively high oxygen fugacity and Ca-rich magma. Ilmenite representsthe low oxygen fugacity and ca-poor magma. Ilmenite Can be formed and stabilited in a wide range ofoxygen fugacities. |
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| Keywords: | magnetite ilmenite titanite oxygen fugacity granite genetic type |
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