| 湘南两江口火山岩的时代及其与西山岩体的成因联系 |
| |
| 引用本文： | 彭学军,李泽泓,倪艳军,郑基俭.湘南两江口火山岩的时代及其与西山岩体的成因联系[J].华南地质与矿产,2003(1):7-11. |
| |
| 作者姓名： | 彭学军 李泽泓 倪艳军 郑基俭 |
| |
| 作者单位： | 1. 中国地质大学,湖北,武汉,430074;湖南地质调查研究院,湖南,湘潭,411100
2. 湖南地质调查研究院,湖南,湘潭,411100 |
| |
| 基金项目： | 中国地质调查项目 ( 2 0 0 113 0 0 0 0 12 ) |
| |
| 摘 要： | 两江口酸性火山岩和西山花岗岩体的地球化学特征相似，物质来源与成因相同。从火山岩至西山岩体早、中、晚次单元花岗岩有明显的演化趋势，它们具有同时代、同源岩浆喷发→超浅成→浅成→中深侵入连续过程产物的特点。根据火山岩内沉积夹层所产古生物及孢粉组合和西山岩体已获对应性好的同位素年龄值推论，两江口酸性火山岩与西山花岗岩体的形成时代为中侏罗世中期至晚期初。
|
| 关 键 词： | 酸性火山岩 西山岩体 同源岩浆 中侏罗世 两江口 |
| 文章编号： | 1007-3701(2003)01-0007-05 |
Eruption age of Liangjiangkou volcanic rocks and their genetic relationships with the Xishan granite body in South Hunan Province |
| |
| PEN Xue-jun ,LI Ze-hong ,NI Yan-jun ,ZHENG Ji-jan.Eruption age of Liangjiangkou volcanic rocks and their genetic relationships with the Xishan granite body in South Hunan Province[J].Geology and Mineral Resources of South China,2003(1):7-11. |
| |
| Authors: | PEN Xue-jun LI Ze-hong NI Yan-jun ZHENG Ji-jan |
| |
| Institution: | PEN Xue-jun 1,2,LI Ze-hong 2,NI Yan-jun 2,ZHENG Ji-jan 2 |
| |
| Abstract: | The Liangjiangkou acidic volcanic rocks and Xishan grantie body show similar geochemical characterstics and obvious evolution trend from volcanic eruption to early , middle and late stage of intrusion of granitic magma, indicating that they have similar sources. The sporo-pollen from the sedimentary beds between the volcanic rocks and isotopic chronology of Xishan mountain granites indicate that magmatism in the studying area happened during the middle Jurassic. |
| |
| Keywords: | acdic volcanic rocks Xishan granite body comagmatic evolution middle Jurassic Lingjingkou |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
