| 中国钴地球化学基准值特征及影响因素 |
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| 关键词:cobalt geochemical baselines rocks catchment sediment alluvial soil |
| 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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| Characteristics of China’s Cobalt Geochemical Baselines and Their Influence Factors |
| 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. |
| LIU Dong-sheng,WANG Xue-qiu,ZHOU Jian,LIU Han-liang,ZHANG Bi-min,NIE Lan-shi,WANG Wei,CHI Qing-hua,XU Shan-fa.2020.Characteristics of China’s Cobalt Geochemical Baselines and Their Influence Factors[J].Acta Geoscientica Sinica,41(6):807-817. |
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