| 金属矿床的同位素直接定年方法 |
| |
| 引用本文： | 赵葵东,蒋少涌.金属矿床的同位素直接定年方法[J].地学前缘,2004,11(2):425-434. |
| |
| 作者姓名： | 赵葵东 蒋少涌 |
| |
| 作者单位： | 南京大学,地球科学系,成矿作用研究国家重点实验室,江苏,南京,210093 |
| |
| 基金项目： | 国家自然科学基金资助项目(40234051,40221301) |
| |
| 摘 要： | 矿床的直接定年就是直接对成矿流体或矿石矿物进行同位素定年 ,这样确定的年龄就直接代表了成矿年龄。目前主要有石英和闪锌矿中流体包裹体的Rb Sr同位素定年、黄铁矿和石英中包裹体的Ar Ar同位素定年、金属硫化物的Rb Sr同位素定年、金属硫化物和氧化物的Sm Nd同位素定年、金属硫化物的Re Os同位素定年 ,以及单个矿石矿物的Pb逐步淋滤法定年
|
| 关 键 词： | 同位素年代学 成矿事件 直接定年 金属矿床 |
| 文章编号： | 1005-2321(2004)02-0425-10 |
| 修稿时间： | 2003年12月1日 |
DIRECT ISOTOPE DATING FOR METALLIC ORE DEPOSITS |
| |
| ZHAO Kui-dong,JIANG Shao-yong.DIRECT ISOTOPE DATING FOR METALLIC ORE DEPOSITS[J].Earth Science Frontiers,2004,11(2):425-434. |
| |
| Authors: | ZHAO Kui-dong JIANG Shao-yong |
| |
| Abstract: | In recent years, many direct isotope dating for metallic ore deposits have been developed owing to the use of the new generational thermal ionization mass spectrometry with high precision and high sensitivity. The direct isotope dating means the direct determination of metallogenic ages of ore-forming fluids or ore minerals. Therefore, the results of direct isotope dating represent the true mineralization ages. The main direct isotope dating methods include: Rb-Sr isotope dating of fluid inclusions in quartz or sphalerite; Ar-Ar isotope dating of fluid inclusions in pyrite and quartz; Rb-Sr isotope dating of sulfides; Sm-Nd isotope dating of sulfides and oxides; Re-Os isotope dating of sulfides; and stepwise leaching Pb-Pb isotope dating of single ore mineral. In this paper, these methods are summarized and discussed, and we hope that these methods will offer more contributions to improving the research on economic geology in China. |
| |
| Keywords: | isotope geochronology mineralization events direct dating metallic ore deposits |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
