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| 滇东南建水二叠纪火山岩地球化学特征及其构造意义 | |
| 引用本文： | 谢静,常向阳,朱炳泉.滇东南建水二叠纪火山岩地球化学特征及其构造意义[J].中国科学院研究生院学报,2006,23(3):349-356. |
| 作者姓名： | 谢静 常向阳 朱炳泉 |
| 作者单位： | 1. 中国科学院地质与地球物理研究所,北京,100029;中国科学院研究生院,北京,100049 2. 广州大学环境科学与工程学院,广州,510405 3. 中国科学院广州地球化学研究所,广州,510640 |
| 基金项目： | 中国科学院资助项目;科技部科研项目 |
| 摘 要： | 滇东南建水地区二叠纪火山岩构造侵位于师宗-弥勒断裂带的西南段，以玄武岩、玄武安山岩和安山岩为主，夹有少量苦橄岩。地质、地球化学特征显示其形成于弧后盆地环境，与建水地区石炭纪枕状熔岩相配套。显示扬子陆块和华夏陆块在晚古生代发生了板块俯冲，形成岛弧火山岩，二叠纪时产生弧后引张，形成弧后盆地。从晚古生代-早中生代，扬子陆块和华夏陆块之间可能存在一个复杂的沟弧盆体系。 |
| 关 键 词： | 滇东南 师宗-弥勒断裂带 特提斯 地球化学 |
| 文章编号： | 1002-1175(2006)03-0349-08 |
| 修稿时间： | 2005年6月23日 |
Geochemical Characteristics of Permian Volcanic Rocks from Jianshui , Southeast Yunnan and Their Tectonic Implication |
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| XIE Jing,CHANG Xiang-Yang,ZHU Bing-Quan.Geochemical Characteristics of Permian Volcanic Rocks from Jianshui , Southeast Yunnan and Their Tectonic Implication[J].Journal of the Graduate School of the Chinese Academy of Sciences,2006,23(3):349-356. | |
| Authors: | XIE Jing CHANG Xiang-Yang ZHU Bing-Quan |
| Institution: | 1.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China 3.School of Environmental Science &;Engineering, Guangzhou University, Guangzhou 510405, China 4.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China |
| Abstract: | The Permian volcanic rocks from Jianshui area tectonically intruded into southwest part of Shizong-Mile fault belt.It is mainly comprised of basalts,basaltic andesites,andesites and a little picrites.Geological and geochemical characteristics show that they are formed in back-arc environment,matching Carboniferous pillow lava from Jianshui area.These imply that Yangtze block and Cathaysia block occurred plate-subduction in late Paleozoic forming the island-arc volcanic rocks,and that they produced back-arc extension in Permian,then formed back-arc basins.From late Paleozoic to early Mesozoic,there was a complex trench-arc-basin system between Yangtze and Cathaysia blocks. |
| Keywords: | Southeast Yunnan Shizong-Mile fault belt Tethys geochemistry |
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