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封面故事：华南地壳物质架构、巨型金属成矿系统及典型钨矿化特征。利用锆石Hf同位素填图首次从大陆尺度刻画华南古老、再造和新生地壳并置的空间架构, 揭示与花岗岩相关的W-Sn-Nb-Ta和REE矿床产于再造地壳域, 其中, REE矿床产于有较多新生幔源物质注入的强再造地壳块体。斑岩/矽卡岩/浅成低温热液型Cu-Au矿床产于富Cu的新生地壳域, 而U和Ag-Pb-Zn成矿系统产于古老地壳域及其边缘。此项研究示范性地证明, 同位素填图技术在刻画地壳物质架构和金属矿床形成就位方面有重要作用。这项由中国地质科学院地质研究所侯增谦院士团队取得的研究成果, 当选中国地质科学院2023年度十大科技进展, 排名第四。(图片提供: 张智宇)
Cover Story：Crustal architecture, giant metal ore systems, and typical tungsten mineralization features. The continental- scale crustal architecture of the spa-tially juxtaposed ancient, reworked, and juvenile crustal domains of South China was imaged for the first time using zircon Hf isotopic mapping. Granite-related W-Sn-Nb-Ta and REE deposits occurred in reworked crustal domains, and REE deposits occurred in strongly reworked crustal blocks with juvenile input. The porphyry/skarn/epithermal Cu-Au deposits were spatially confined to Cu-fertilized juvenile crustal domains; whereas, the U and Ag-Pb-Zn deposits occurred in old crustal domains and at the mar-gins. This study has demonstrated the im-portance of isotopic mapping as a tool for characterizing crustal architecture and processes that lead to the formation of metal ore deposits. The research achievement led by the team of Academician HOU Zengqian, Institute of Geology, Chinese Academy of Geological Sci-ences (CAGS), ranks the fourth among “Top Ten Geological Sci-tech Progresses of CAGS in 2023”. (Image by ZHANG Zhiyu)
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