| 中国钴地球化学基准值特征及影响因素 |
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| 引用本文：刘东盛,王学求,周建,刘汉粮,张必敏,聂兰仕,王玮,迟清华,徐善法.2020.中国钴地球化学基准值特征及影响因素[J].地球学报,41(6):807-817. |
| DOI：10.3975/cagsb.2020.101201 |
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| 基金项目:国家重点研发计划“穿透性地球化学勘查技术”(编号: 2016YFC0600600);国家专项“深部探测技术与实验研究”(编号: SinoProbe-04);中国地质调查局地质调查项目“化学地球基准与调查评价”(编号: DD20190450) |
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| 中文摘要:随着新能源产业的快速崛起, 钴的战略价值不断提升, 同时钴的潜在生态风险也逐渐受到重视。 中国地球化学基准计划(CGB)建立了钴的地球化学基准, 为资源评价和环境基准建立提供了定量参照标尺。中国岩石钴的基准值为6.44×10–6, 背景值为9.26×10–6, 与中国出露地壳丰度接近。中国汇水域沉积物/土壤表层、深层钴的基准值分别是11.0×10–6和10.6×10–6, 略高于其他大陆(国家)钴基准值, 略低于中国区域化探水系沉积物钴中位值。岩石和汇水域沉积物或土壤中钴的基准主要受地质背景控制, 但在化学风化作用强烈和碳酸盐岩发育的区域, 汇水域沉积物/土壤中钴的基准值发生富集作用 |
| 中文关键词:钴 地球化学基准 岩石 汇水域沉积物 土壤 |
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| Characteristics of China’s Cobalt Geochemical Baselines and Their Influence Factors |
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| Abstract:With the rapid rise of the new energy industry, the strategic value of cobalt has continued to increase. At the same time, the potential ecological risks of cobalt have gradually received attention. China Geochemical Baseline Program (CGB) has established geochemical baselines for cobalt, which provides a quantitative reference scale for resource evaluation and the establishment of environmental baselines. The cobalt baseline of rocks in China is 6.4×10–6, and the background value is 9.3×10–6, which is close to the abundance of China’s exposed crust. The baselines of cobalt in the surface and deep layers of China’s catchment sediment/alluvial soil are 10.99×10–6 and 10.62×10–6, respectively, which are slightly higher than the baselines of other continents (countries) and slightly lower than the baselines obtained by the “Regional Geochemistry National Reconnaissance Program”. The baseline of cobalt in sediments/soils of rocks and catchment waters is mainly controlled by geological background. In areas where chemical weathering is strong and carbonate rocks are well developed, secondary enrichment can also be an important impact on cobalt baselines in catchment sediment/alluvial soil. |
| keywords:cobalt geochemical baselines rocks catchment sediment alluvial soil |
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