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| 新疆西南天山下石炭统图尤克阿秀组火山岩地质及地球化学特征、构造环境及年代依据 | |
| 引用本文： | 李建兵,魏永峰,李再会.新疆西南天山下石炭统图尤克阿秀组火山岩地质及地球化学特征、构造环境及年代依据[J].新疆地质,2010,28(2). |
| 作者姓名： | 李建兵 魏永峰 李再会 |
| 作者单位： | 1. 成都理工大学,四川,成都,610059;四川省地勘局区调队,四川,成都,610213 2. 四川省地勘局区调队,四川,成都,610213 3. 成都地质矿产研究所,四川,成都,610082 |
| 基金项目： | 新疆阿合奇县托什干河上游一带1:5万区域地质矿产调查 |
| 摘 要： | 西南天山下石炭统图尤克阿秀组火山岩为爆发相火山角砾(集块)岩、喷溢相致密状玄武岩、枕状杏仁状玄武岩,与沉积相结晶灰岩或放射虫硅质互层组成,其沉积相岩性在走向上相变明显.火山岩主要元素地球化学特征、稀土微量元素特征与典型的大洋岛屿玄武岩相似.岩石组合特征、岩相特征、主量元素、微量及稀土元素特征表明,该火山岩形成于板内大洋岛屿(海山)环境,具板内裂谷特征.综合硅质岩中放射虫组合和玄武岩全岩40Ar/39Ar年龄测试结果,确定火山岩形成地质时代为早石炭世. |
| 关 键 词： | 西南天山 火山岩 地球化学 构造环境 地质时代 |
GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS,TECTONIC ENVIRONMENT AND AGE BASIS OF LOWER CARBONIFEROUS TUYOUKEAXIU GROUP VOLCANIC ROCKS IN SOUTHWESTERN TIANSHAN MOUNTAINS, XINJIANG |
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| LI Jian-bing,WEI Yong-feng,LI Zai-hui.GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS,TECTONIC ENVIRONMENT AND AGE BASIS OF LOWER CARBONIFEROUS TUYOUKEAXIU GROUP VOLCANIC ROCKS IN SOUTHWESTERN TIANSHAN MOUNTAINS, XINJIANG[J].Xinjiang Geology,2010,28(2). | |
| Authors: | LI Jian-bing WEI Yong-feng LI Zai-hui |
| Institution: | LI Jian-bing1,2,WEI Yong-feng2,LI Zai-hui3 (1.Chengdu University of Technology,Chengdu,Sichuan,610059,China,2.Regional Geological Survey Teams of Geological Prospecting Bureau Sichuan Province,610213,3.Chengdu Institute of Geology and Mineral Resources,610082,China) |
| Abstract: | Volcanic rocks of lower Carboniferous Tu-you-ke-a-xiu group in Southwestern Tianshan Mountains, Xinjiang, are phase of the outbreak of volcanic breccia (set pieces) rocks, dense-phase-like eruption of basalt, pillow-shaped almond-shaped basalt, sedimentary facies limestone or radiolarian siliceous.Its sedimentary facies lithological change significantly in moving toward a photogenic.Geochemical characteristics of volcanic rocks in major elements, rare earth trace characteristics are similar to typical ocean... |
| Keywords: | Southwest Tianshan Mountains Volcanic rock Geochemistry Tectonic environment Geological age |
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