Metallogenic characteristics of the region of Northwest Hebei and analysis of ore prospecting potential in its peripheries |
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| Authors: | Aiqun Sun Shuyin Niu Baode Wang Yuchou Han Minhui Wei Baojun Ma Zhiyuan Zhao Dong Xia |
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| Institution: | 1 College of Resources, Shijiazhuang Univerity of Economics, Shijiazhuang 050031, China 2 Department of Land and Natural Resources of Hebei Province, Shijiazhuang 050081, China |
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| Abstract: | The region of Northwest Hebei is an area where Au-Ag polymetallic ore depsits are concentrated in Hebei Province. There were
divided the Au ore-concentrated region with the magmatic-metamorphic diamictite zone as the center and the perpheral cover-strata
zone and Ag-polymetallic metallogenic zone along the line of Xuanhua-Songli-Chicheng. Research on mantle branch structure
indicates that Au-Ag polymetallic ore-forming materials come mainly from the deep interior of the Earth. The ore-forming materials
tend to migrate upwards through the multi-stage evolution of mantle plume, and are concentrated as ores in the favourable
tectonic expansion zone of a mantle branch structure. As viewed in plane, from the center to the periphery and as viewed in
space, from the lower part to the upper part there exists Au-Ag-Pb-Zn zonation, as evidenced by drilling data from a number
of mines. So, there is still great potential for ore prospecting in the region of Northwest Hebei. |
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| Keywords: | mantle plume mantle branch structure metallogenic sequence structural ore-control prospection at depth Zhang-jiakou-Xuanhua region |
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