| 中国主要类型铅锌矿床S、Pb、C-H-O同位素特征及其成因意义 |
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| 关键词:lead-zinc ore S isotope Pb isotope C-H-O isotope geochemistry |
| 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)；省科技创新项目(编号: 2023CX10)和基本科研业务费项目(编号: JKYZD202313) |
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| Isotopic Characteristics of S, Pb, and C-H-O in Major Lead-zinc Deposits in China and Their Genetic Significance |
| As significant mineral resources, lead and zinc play a vital role in industrial production. The S, Pb, C-H-O isotopic geochemistry can be employed to explain geological issues such as the material sources of rocks and ores, ore-forming fluids, and their genesis. Extensive research on the stable isotopes of lead-zinc deposits since the 1980s has yielded fruitful results, laying a good foundation for a national summary from the perspective of a single mineral species. This paper synthesizes 10 000 datasets of S, Pb, H, O and C isotopes related to important Pb-Zn deposits in China, and the results show that the S and Pb isotopic characteristics of China’s lead-zinc deposits indicate a complex source of ore-forming materials, primarily deep-source magma and host strata (marine sediments). The H-O and C-O isotopic characteristics suggest that the water in the ore-forming fluids of China’s lead-zinc deposits mainly originates from magmatic water and meteoric water, while the C in these fluids mainly stems from magma and marine carbonate rocks. The spatial distribution patterns of S and Pb isotopes reveal that from west to east and north to south in China, lead-zinc deposits are richer in 32S, indicating a greater involvement of crustal materials in the mineralization processes of deposits in the eastern and southern regions. The C-H-O isotopic characteristics suggest that, compared to the northwestern regions, the lead-zinc deposits in southeastern China have more atmospheric precipitation or basin brines participating in mineralization. |
| LIU Yu,JIANG Biao,WANG Denghong,WANG Yan,SONG Xuexin,ZHANG Changqing,HUANG Fan.2025.Isotopic Characteristics of S, Pb, and C-H-O in Major Lead-zinc Deposits in China and Their Genetic Significance[J].Acta Geoscientica Sinica,46(1):93-115. |
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