| 个旧卡房火山岩基本地质地球化学特征 |
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| 引用本文： | 王学琨. 个旧卡房火山岩基本地质地球化学特征[J]. 昆明理工大学学报(自然科学版), 1993, 0(5) |
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| 作者姓名： | 王学琨 |
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| 作者单位： | 昆明工学院矿产地质研究所 |
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| 摘 要： | 卡房火山岩产于中三叠统个旧组的碳酸盐岩夹层中.有变橄榄玄武岩、变杏仁状玄武岩、变玄武岩和凝灰岩.化学组成特征是 SiO_2,偏低富碱(K_2O>Na_2O),较富含 Cr,Ni,Co,V,Ti 及 Cu,W,Sn,Bi,Pb,Zn 等元素.δ~(34)s‰为1.26属陨石型.蚀变后岩石有金云母岩,金云母阳起石岩等.部分蚀变岩成为富含 Cu、Sn 的矿体,火山岩归属碱性玄武岩系列,形成于弱造山带环境,为印支期喷发产物,岩浆来源深度大于40km.
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| 关 键 词： | 火山岩 地质 地球化学 个旧 |
Geologic and Geochemical Characteristics of Guo-ju Ka-fan Volcanic Rock |
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| Wang Xuekun. Geologic and Geochemical Characteristics of Guo-ju Ka-fan Volcanic Rock[J]. Journal of Kunming University of Science and Technology(Natural Science Edition), 1993, 0(5) |
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| Authors: | Wang Xuekun |
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| Affiliation: | Geologic Institute of Ore Deposits |
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| Abstract: | Guo-ju Ka-fan volcanic rocks in the middle Triassic Guo-ju formation.There were basalt almond-shape basalt and tuff there.The chemical compositions of the volcanic rock is the lower SiO_2and the higher alkali rock(K_2O>Na_2O).It belongs to the alkali-basalt series,which is formed in Indo-China epoch. |
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| Keywords: | Volcanic rock Geology Geochemistry Guo-ju |
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