| 中-酸性火山岩与侵入岩中钛铁氧化物化学成分的对比研究 |
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| 引用本文： | 任启江,杨荣勇,徐立,杨怀庆. 中-酸性火山岩与侵入岩中钛铁氧化物化学成分的对比研究[J]. 矿物岩石, 1990, 0(3) |
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| 作者姓名： | 任启江 杨荣勇 徐立 杨怀庆 |
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| 作者单位： | 南京大学地球科学系，南京大学地球科学系，南京大学地球科学系，南京大学地球科学系 南京 210018，南京 210018，南京 210018，南京 210018 |
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| 摘 要： | 根据火成岩中钛铁氧化物的研究发现,中-酸性侵入岩与火山岩中钛铁氧化物在MnO,TiO_2,Al_2O_3的含量上存在着明显的差别.利用(Al_2O_3+Cr_2O_3+V_2O_3)-MgO-(MnO+ZnO)三角图解,MnO(Mt)-MnO((?)),Al_2O_3(Mt)-TiO_2(Mt)图解,有助于区分火山岩与次火山岩,以及推测侵入岩的定位深度和岩浆冷凝速度,笔者等以安徽庐枞火山岩盆地中巴家滩岩体为例,检验这一方法的应用效果.
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| 关 键 词： | 美国西部 中国东部 火山岩 次火山岩 钛铁氧化物 |
CONTRASTING STUDY ON CHEMICAL COMPOSITION OF Fe-Ti OXIDES BETWEEN INTERMEDIATE-ACID VOLCANIC AND INTRUSIVE ROCK |
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| Ren Qijiang Yang Rongyong Xu Li YangHuaiqing. CONTRASTING STUDY ON CHEMICAL COMPOSITION OF Fe-Ti OXIDES BETWEEN INTERMEDIATE-ACID VOLCANIC AND INTRUSIVE ROCK[J]. Journal of Mineralogy and Petrology, 1990, 0(3) |
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| Authors: | Ren Qijiang Yang Rongyong Xu Li YangHuaiqing |
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| Abstract: | According to the study of Fe-Ti oxides in igneous rocks,there are some differnces of chemical composition of Fe-Ti oxides in MnO,TiO_2,Al_2O_3between intermediate-acid volcanic and intrusivc rocks. From the triangle composition diagram of (Al_2O_3+Cr_2O_3+V_2O_3)-MgO-(MnO+ZnO),diagram of MnO(Mt)-MnO(Il)and Al_2O_3(Mt)-TiO_2(Mt),a series of useful information for distingushing volcanic with subvolcanic rocks, inferring the depth of intrusive magma and cooling vclocity of magma can be obtained.As an cxample of using this mcthod,the Bajiatan igneous rocks in Lujang-Zhongyang volcanic basin are demostrated in this paper. |
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| Keywords: | Western United States Eastern China volcanic rocks.subvolcanic rocks Fe-Ti oxides |
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