| 赣东北地区燕山晚期火山岩同位素年代学研究 |
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| 关键词:volcanic rocks early Cretaceous isotope chronology uranium mineralization northeast Jiangxi Province |
| 基金项目:核工业科学基金(Y71961802)，核能资源研究开放实验室(H9508) |
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| Isotope Chronological Studies of Late Yanshanian Volcanic Rocks in Northeast Jiangxi Province |
| The Rb Sr, U Pb and K Ar isotope chronology shows that the time limits of the late Yanshanian volcanic rocks are from 91.7 to 128.3 Ma. Two magmatic cycles can be recognized, i.e., Shixi cycle and Zhoujiadian cycle. Their formation ages are 128.3～ 119.2±1.3 Ma and 110.8±3.2～91.7 Ma, respectively, quite consistent with the ages of two main uranium mineralization stages of the Ganhang tectonic and volcanic rock belt. This shows that the Uranium mineralization is closely related to these two magmatic activities. |
| WANG Yong,GUAN Tai-yang,HUANG Guo-fu,YU Da-gan,CHEN Cong-lin.2002.Isotope Chronological Studies of Late Yanshanian Volcanic Rocks in Northeast Jiangxi Province[J].Acta Geoscientica Sinica,23(3):233-236. |
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