| 内蒙古自治区大型金矿地球化学标志与预测 |
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| 关键词:Inner Mongolia geochemical prognosis gold ore districts |
| 基金项目:中国地质调查局地质大调查项目“中亚地区战略资源地球化学调查”(编号: DD20190451);全球地球化学填图计划(编号: 121201108000150005);中国地质科学院基本科研业务费项目(编号: AS2012J01; JYYWF20182401) |
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| The Geochemical Indicator and Prognosis of Large Gold Ore Districts in Inner Mongolia |
| The 1:1 000 000 gold geochemical map in Inner Mongolia was compiled, based on the datasets of 1:200 000 Regional Geochemistry-National Reconnaissance Program (RGNR) and 1:1 000 000 China–Mongolia Geochemical Mapping Project which was carried out across the boundary regions. The large gold ore deposits have a good relationship with gold geochemical anomalies. Geochemical indicators based on the four large gold ore deposits in Inner Mongolia show the following features: (1) 3-level nested geochemical anomalies occur around the large deposits, i.e., a geochemical province containing regional anomalies and local concentration centers; (2) The gold anomaly area is usually larger than 1000 km2; (3) The gold anomaly contrast is higher than 2.2; (4) There are Ag, As, Sb, Bi, Hg geochemical anomalies in general; (5) There are regional deep faults and secondary faults in the gold anomaly area or its periphery; (6) There are generally igneous rocks in the gold anomaly area or its periphery. Finally, 14 large-size gold metallogenic prospective areas were delineated based on the geochemical indicators, regional geology and tectonic setting. |
| ZHOU Jian,XU Shan-fa,NIE Lan-shi,LIU Dong-sheng,HAN Zhi-xuan,LIU Qing-qing,ZHANG Bi-min,LIU Han-liang,CHI Qing-hua.2020.The Geochemical Indicator and Prognosis of Large Gold Ore Districts in Inner Mongolia[J].Acta Geoscientica Sinica,41(6):818-826. |
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