| 青海可可西里新生代火山岩特征 |
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| 引用本文： | 马文峰,王国芝.青海可可西里新生代火山岩特征[J].云南地质,2013(4):476-479. |
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| 作者姓名： | 马文峰 王国芝 |
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| 作者单位： | 成都理工大学地球科学学院,四川成都610059 |
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| 摘 要： | 可可西里火山岩岩石序列为粗安岩、粗面岩、玻基安山岩及流纹岩,尤以安山岩最有代表性.渐新世SiO2、CaO高于中新世.稀土元素分配曲线揭示渐新世和中新世为同源岩浆.同位素研究结果显示出混然富集地幔源区特点.
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| 关 键 词： | 新生代火山岩 安山岩最典型 同源岩浆 富集地幔源区 青海可可西里 |
THE CHARACTERISTICS OF KEKEXILI CENOZOIC VOLCANIC ROCKS |
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| MA Wen-feng,WANG Guo-zhi.THE CHARACTERISTICS OF KEKEXILI CENOZOIC VOLCANIC ROCKS[J].Yunnan Geology,2013(4):476-479. |
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| Authors: | MA Wen-feng WANG Guo-zhi |
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| Institution: | ( College of Geosciences, Chengdu University of Science ＆ Technology, Chengdu 610059 ) |
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| Abstract: | Kekexili volcanic rock series are composed of trachyandesite, trachite, basis andesite and li- parite, especially the characteristic andesite. SiO2, CaO of Oligocene are higher than than those of Miocene. The REE distribution curve shows Oligoeene and Miocene magmas have a same origin. The isotope analysis shows the characteristics of contamination and enrichment mantle derivation. |
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| Keywords: | Cenozoic Volcanic Rock Widest Andesite Synmagmatic Derivation Enrichment Mantle Der- ivation Kekexili Qinghai |
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