| 中蒙边界地区铜区域地球化学分布及远景区预测 |
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| 关键词:copper regional geochemistry metallogenic prospective area geochemical mapping China–Mongolia border region |
| 基金项目:中国地质调查局地质调查项目(编号: DD20190451; DD20160116; DD20190450) |
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| 摘要: |
| Regional Geochemistry and Distribution of Anomalies Related to Potential Copper Mettallogic Areas in China–Mongolia Border Region |
| China-Mongolia border region has excellent ore-forming geological conditions and is one of the world’s important metal mineralization provinces and one of the world’s three major porphyry copper (gold and molybdenum) metallogenic belts. China-Mongolian cooperative 1:1 000 000 geochemical mapping project collected a lot of geochemical data, providing basic data for the study of element dispersion and enrichment, mineralization trends, resource evaluation and environmental changes in this region. This paper discussed the geochemical parameters of copper in different tectonic belts and the regional geochemical anomalies based on 1:1 000 000 geochemical data across the boundary between China and Mongolia. The median and average values of copper are 20.1×10–6 and 21.6×10–6. The median and average values of the eastern and western Junggar arc basin systems, the Altay tectonic belt, the arc basin system on the Altay southern margin, the Gobi Altay arc basin system, the Junggar block, and the Beishan–Gobi Tianshan arc basin system are higher than the values of other tectonic belts, showing that copper is enriched in those area. A total of 91 copper geochemical anomalies were delineated respectively based on the 85% cumulative percentage and 34 geochemical provinces that were selected. The work fills the gap in the copper geochemical distribution and provides important data for the comparison of ore deposits in this area. |
| NIE Lan-shi,LIU Han-liang,LI Jiang-peng,FAN Yu,CHI Qing-hua,LIU Dong-sheng,ZHOU Yi-ning,WANG Xue-qiu.2020.Regional Geochemistry and Distribution of Anomalies Related to Potential Copper Mettallogic Areas in China–Mongolia Border Region[J].Acta Geoscientica Sinica,41(6):851-860. |
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