| 西秦岭成矿带成矿系列、成矿规律与找矿方向 |
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| 关键词:mineral resources deposit types metallogenic epoch metallogenic regularity metallogenic series metallogenic prospect Qinghai West Qinling |
| 基金项目:中国地质调查局“中国矿产地质志”项目(编号: DD20221695-22; DD20190379-23; DD20160346);青海省财政资金项目“青海省矿产地质志编制”(编号: 2021074007ky007) |
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| Metallogenic Series, Regularity and Prospecting the Direction of the West Qinling Metallogenic Belt |
| The metallogenic conditions of west Qinling metallogenic belt in Qinghai Province are abundant. Gold, copper, mercury, tungsten, antimony, arsenic, and limestone are mainly distributed in the Qinghainanshan–Zeku Au-Ag-Cu-Pb-Zn-W-Sb-Fe-As-graphite-granite-salt-dry-hot rock metallogenic subzone(IV-28-2) and Kuhai–Zuomugou Hg-Au-Pb-Zn-Sb-W-peat metallogenic Ore subzone(IV-28-3). Predominantly, metal minerals are produced in areas with strong tectonic, deep and large fault, volcanic, and intermediate-acid magmatic intrusion activities, as well as deformation-metamorphism transformation of sedimentary strata. Accentuating characteristics of regional concentration, banded, and equidistant distribution. The main genetic types of 34 minerals within west Qinling are: magmatic and ore-bearing fluid deposits, secondary sedimentary deposits, metallogenic epoch is mainly Triassic and Quaternary, Carboniferous to Triassic Paleotethyan evolution stage formed contact metasomatism, magmatic hydrothermal gold (silver), copper, lead-zinc, and tungsten. Epigenetic meso-cryogenic hydrothermal deposits are abundantly contained Au, Sb, Cu, Pb, Zn, Hg and As, whereas epigenetic deposits are dominated by chemically deposited limestone. The evolution of geological structure, the spatial and temporal distribution of mineralization in the area, and the theory of metallogenic series suggest three metallogenic series groups, nine ore deposit series, 12 ore deposit subseries and 13 ore deposit types are located in the west Qinling metallogenic belt. Metallogenic prospective areas highlight the prospecting direction in the district for further explorations. |
| WANG Lei.2023.Metallogenic Series, Regularity and Prospecting the Direction of the West Qinling Metallogenic Belt[J].Acta Geoscientica Sinica,44(4):649-659. |
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