| 广西钦州地区那丽花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义 |
| |
| 引用本文： | 贾小辉,王晓地,杨文强,牛志军,周 岱.广西钦州地区那丽花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义[J].地质通报,2012,31(1):82-89. |
| |
| 作者姓名： | 贾小辉 王晓地 杨文强 牛志军 周 岱 |
| |
| 作者单位： | 中国地质调查局武汉地质矿产研究所, 湖北 武汉 430223 |
| |
| 摘 要： | 位于广西南部钦州地区的那丽岩体是华南地区(除海南岛外)报道的、具精确同位素年龄的海西期花岗岩岩体,LA-ICP-MS锆石U-Pb定年结果显示其形成时代为262Ma。二叠纪时期,羌塘-中缅Sibumasu地块与印支地块碰撞拼合,导致华南陆块俯冲于印支陆块之下,那丽花岗岩可能形成于这种俯冲作用的较晚阶段——弧后伸展环境。
|
| 关 键 词： | 钦州地区 海西期 那丽花岗岩 弧后伸展环境 |
LA-ICP-MS zircon U-Pb age of the Nali granite in Qinzhou area of southern Guangxi and its geological significance |
| |
| JIA Xiao-hui,WANG Xiao-di,YANG Wen-qiang,NIU Zhi-jun,ZHOU Dai.LA-ICP-MS zircon U-Pb age of the Nali granite in Qinzhou area of southern Guangxi and its geological significance[J].Geologcal Bulletin OF China,2012,31(1):82-89. |
| |
| Authors: | JIA Xiao-hui WANG Xiao-di YANG Wen-qiang NIU Zhi-jun ZHOU Dai |
| |
| Institution: | Wuhan Institute of Geology and Mineral Resources, China Geological Survey, Wuhan 430223, Hubei, China |
| |
| Abstract: | This paper reported the recent discovery of Hercynian granite at Nali of Qinzhou in Guangxi. The Nali granitic body has crystallization ages of 262Ma obtained by LA-ICP-MS zircon U-Pb method. In Permian period, the collision between Qiangtang-Sibumasu block and Indochina block resulted in the thrusting of South China block beneath Indochina block. The Nali granites were generated at the late stage of this subduction, probably in a back-arc extension setting. |
| |
| Keywords: | Qinzhou area Hercynian Nali granite back-arc extension background |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地质通报》浏览原始摘要信息 |
| 点击此处可从《地质通报》下载免费的PDF全文 |
|
