庐枞井边-盘珠洼地区中生代岩浆活动的构造背景  

Tectonic setting of mesozoic magmatic activities in the region of Jingbian-Panzhuwa in Lujiang-Zongyang Volcanic Basin

作　　者：刘珺[1] 袁峰[1] 范裕[1] 吴明安[2] 周涛发[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]安徽省地质调查院,安徽合肥230001

出　　处：《合肥工业大学学报（自然科学版）》2005年第5期486-489,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(40272048);安徽省优秀青年科技基金资助项目;安徽省自然科学基金资助项目(01045202);南京大学内生金属矿床成矿机制研究国家重点实验室开放基金资助项目(09-03-10)

摘　　要：庐枞中生代火山盆地位于长江中下游断陷带内,井边-盘珠洼地区位于庐枞中生代火山盆地中部。井边-盘珠洼地区主要发育巴家滩岩体和4个火山喷发旋回,4个旋回分别为龙门院旋回、砖桥旋回、双庙旋回和浮山旋回。文章采用多种构造环境判别方法对该区4个旋回的火山岩以及巴家滩岩体的构造环境加以判别,得出该地区岩浆活动的背景是板内拉张环境。The region of Jingbian-Panzhuwa is in the center of Lujiang-Zongyang Volcanic Basin,which is located in the middle and lower reaches of the Yangtze River fault-depression zone,and four volcanic gyrations and the Bajiatan intrusion are developed in it. Various methods are adopted herein to distinguish the tectonic setting of the four volcanic gyrations and the Bajiatan intrusion. The result shows that the magma activities in this area are developed in a tectonic setting of extension in the slab.

关 键 词：构造背景 岩浆活动 巴家滩 庐枞 

分 类 号：P588.11[天文地球—岩石学]