| 中国金矿床成矿年代学研究进展 |
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| 关键词:gold deposit ore-forming age metallogenic epochs China |
| 基金项目:中国地质调查局“中国矿产地质志”项目(编号: DD20221695; DD20190379; DD20160346) |
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| 摘要点击次数: 1916 |
| 全文下载次数: 1495 |
| 摘要: |
| Metallogenic Chronology of Gold Deposits in China |
| The timing of mineralization is crucial in understanding ore-forming processes and informing gold prospecting. This study presents nearly 4000 ore-forming data points from 610 gold deposits, collected from 1982 to 2021. Using these data, the seven main metallogenic epochs of gold deposits are summarized: Neoarchean–Paleoproterozoic (Wutai Period), Mesoproterozoic–Neoproterozoic (Jinning–Xuefeng Period), Early Paleozoic (Caledonian Period), Late Paleozoic (Hercynian Period), Early Mesozoic (Indosinian Period), Late Mesozoic (Yanshan Period), and Cenozoic (Himalayan Period). The distribution characteristics, deposit types, and metallogenic environments of gold deposits in different geological periods were discussed. The results showed that gold deposits in China formed across various geological periods. The earliest gold deposits formed during the Archean, and gold mineralization in China peaked during the Yanshan Period (Early Cretaceous, 145–105 Ma). In recent years, isotopic chronology studies have shown that the Himalayan Period was also an important metallogenic period for Chinese gold deposits. The characteristics of gold deposits of different ages in China are summarized as follows: gold deposits hosted in Archean metamorphic rocks show weak mineralization, whereas there is a greater degree and longer period of mineralization in younger deposits. The youngest deposits from the Cenozoic have great potential for gold prospecting. |
| QIN Yan,WANG Cheng-hui,WANG Deng-hong,WANG Yan,HUANG Fan.2023.Metallogenic Chronology of Gold Deposits in China[J].Acta Geoscientica Sinica,44(4):581-598. |
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