| 中国金矿床成矿时代的讨论 |
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| 关键词:metallogenetic epoch gold deposit China |
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| Metallogenic Epoch of China's Gold Deposits |
| Based on the age_dating values from eighty_four pieces of rock samples in fifty China's gold deposits,the metallogenic epoch of China's gold deposits constitutes the metallogenic framework,include one older epoch(2500～1800Ma)and one younger epoch (280～100Ma).The regional destribution of metallogenic epoch shows regular variation,the epoch of Precambrian gold deposits gradually decreasesfrom west to east of China,while that of Phanerozoic gold deposits gradually increases.Gold deposits of greenstone belt type are the most important one in China.As to age_dating methods,the author recommends that single Uranium_bearing mineral U_Pb method is to be adopted ,for the precambrian gold deposits but for the Phanerozoic one the 40 Ar/ 39 Ar,K_Ar and Rb_Sr isochron methods are recomended. |
| LI Jun-jian.1998.Metallogenic Epoch of China's Gold Deposits[J].Acta Geoscientica Sinica,19(1):215-220. |
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