| 陕西凤太地区唐藏—黄柏塬构造带内各时代火山岩对比研究 |
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| 引用本文： | 校培喜,张俊雅,王洪亮. 陕西凤太地区唐藏—黄柏塬构造带内各时代火山岩对比研究[J]. 陕西地质, 1999, 0(2) |
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| 作者姓名： | 校培喜 张俊雅 王洪亮 |
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| 作者单位： | 西安地质矿产研究所!西安710054(校培喜，张俊雅)，陕西省地勘局医研院!咸阳712000(王洪亮) |
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| 摘 要： | 唐藏一黄柏塬构造带是商丹结合带的向西延伸，有两套不同时代火山岩系相依分布，其中新元古代丹凤岩群火山岩系主要为玄武岩—安山岩—流纹岩，早古生代罗汉寺岩群火山岩系为苦橄岩—安山玄武岩—安山岩—流效岩，通过岩石常量元素和稀土、微量元素地球化学特征研究，证明丹凤岩群火山岩系形成千岛弧构造环境，罗汉寺岩群火山岩系形成于陆壳增厚的活动陆线构造环境。
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| 关 键 词： | 构造带 火山岩系 岛弧 活动陆缘 |
THE CORRELATIONAL STUDY OF VARIOUS PERIODS VOLCANIC ROCKS IN TANGZANG-HUANGBAIYUAN TECTONIC BELT IN FENGTAI AREA,SHAANXI PROVINCE |
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| Xiao Peixi, Zhang Junya. THE CORRELATIONAL STUDY OF VARIOUS PERIODS VOLCANIC ROCKS IN TANGZANG-HUANGBAIYUAN TECTONIC BELT IN FENGTAI AREA,SHAANXI PROVINCE[J]. Geology of Shaanxi, 1999, 0(2) |
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| Authors: | Xiao Peixi Zhang Junya |
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| Abstract: | Tangzang-Huangbaiyuan tectonic belt, is the extension part toward west of Shangdanjunction belt, has two sites of different periods volcanic rocks, in which volcanic rock seriesof neo-Proterozoic Danfeng group were basalt-andesite-rhyolite, that of early PaleozoicLuohansi group were picrite-andesite basalt-andesite-rhyolite. By studying of geologicalcharacteristics of rock constant elements, rare earth elements and micro-eIements,it is proventhat voIcanic rock series of Danfeng group formed in island arc structural condition, that ofLuohansi group formed in active epicontinental structural condition of continental crustoverthickness. |
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| Keywords: | tectonic belt volcanic series island arc active dpicontinent |
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