| 夏河县孜孜合一带中侏罗世火山岩特征及构造环境探讨 |
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| 引用本文： | 代文军,党引业,等.夏河县孜孜合一带中侏罗世火山岩特征及构造环境探讨[J].甘肃地质学报,2001,10(2):23-28. |
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| 作者姓名： | 代文军 党引业 |
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| 作者单位： | 甘肃省地勘局第三勘查院 甘肃兰州730050
(代文军，党引业，柳生祥，李柒林)，甘肃省地勘局第三勘查院 甘肃兰州730050(邱庆伦) |
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| 摘 要： | 夏河县孜孜合一带侏罗纪地层中发育的中基性火山岩 ,为碱性玄武岩系列、钠质类型。岩石类型主要为 :安山质火山角砾岩、玄武岩、球颗状玄武岩、安山玄武岩、杏仁状安山玄武岩、杏仁状安山岩等。其岩石化学、微量元素特征均表明其具有板内碱性玄武岩的特征。火山岩是在燕山期由早期的挤压挠曲转换为晚期的伸展裂陷环境下形成的。
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| 关 键 词： | 中侏罗世 中基性火山岩 岩石地球化学 甘肃夏河县 |
FEATURE AND TECTONIC SETTING OF VOLCANIC ROCK OF MEDIAN JURASSIC SYSTEM IN ZIZIHE AREA,XIAHE COUNTY |
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| DAI Wen-jun,DANG Yin-ye,LIU Sheng-xiang,LI Qi-lin,QIU Qing-lun.FEATURE AND TECTONIC SETTING OF VOLCANIC ROCK OF MEDIAN JURASSIC SYSTEM IN ZIZIHE AREA,XIAHE COUNTY[J].Acta Geologica Gansu,2001,10(2):23-28. |
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| Authors: | DAI Wen-jun DANG Yin-ye LIU Sheng-xiang LI Qi-lin QIU Qing-lun |
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| Institution: | (No.3 Institute of Geology and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou 730050,China) |
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| Abstract: | In Zizihe area,Xiahe county,intermediate basic volcanic rock is hosted in Jurassic system,and the volcanic rock is alkaline basalt series,sodic type rock,as following:andesitic volcanic breccia,basalt,pelletoidal basalt,andesitic basalt,amygdaloidal andesitic basalt,amygdaloidal andesite and so on. The characteristics of its petrochemistry and microelement show that it has characteristics of alkaline basalt,and formed from early Yanshan movement to the late of it. |
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| Keywords: | Median Jurassic system Intermediate basic volcanic rock Petro-geochemistry Xiahe county of Gansu |
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