综合物化探在河北某斑岩型铅锌矿床中的应用及找矿效果

doi:10.11720/wtyht.2021.1168

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Abstract

A lead-zinc deposit in Hebei Province is the only medium-sized porphyry lead-zinc deposit in Yanshan area, Many years' geological exploration work after its discovery has not made major prospecting breakthrough.After comprehensive research on geophysical and geochemical exploration and geological data obtained over the years in combination with a series of work such as high-power IP area measurement,it is believed that the anomalous elements of geochemical exploration in this area are obviously in zoning form, the anomaly of the electrical shock is obvious, the metallogenic series is complete, and the prospecting potential is large.Through drilling verification, thick high-grade lead-zinc deposits were found in the periphery of the porphyry and in the contact zone,copper and molybdenum deposits were found in the depth, which form a complete metallogenic series of porphyry deposits. Therefore, a new breakthrough in prospecting in this area has been realized. This area has a potential to become a large lead-zinc deposit, thus further expanding the resource prospect of the region.

Key words： geochemical anomalies elemental zoning excited polarization anomaly porphyry lead-zinc deposit metallogenic series

Received: 08 April 2020 Published: 29 April 2021

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	Li-Chao ZHEN
	Yu-Tang LI
	Bo ZHAO
	Yu-Wei JIANG
	Da-Xing ZHAI

Cite this article:

Li-Chao ZHEN,Yu-Tang LI,Bo ZHAO, et al. Application of comprehensive geophysical and geochemical exploration in a porphyry lead-zinc deposit in Hebei and its prospecting effect[J]. Geophysical and Geochemical Exploration, 2021, 45(2): 281-291.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1168 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I2/281

Geologicalmap of a porphyry lead-zinc deposit in Hebei
1—Quaternary sestem;2—Jurassic Houcheng formation conglomerate, rhyolite tuff; 3—Jurassic Nandaling, Xiahuayuan formation conglomerate, sandstone and thin coal;4—thick conglomerate intercalated with sandstone in the Xingshikou formation of Triassic;5—giant thick layer (containing manganese) dolomite in the second member of the Gaoyuzhuang formation of the Great Wall system;6—gray-black thick flint zone dolomite in the first member of the Gaoyuzhuang formation of the Great Wall system;7—thick layered quartz sandstone and flint dolomite of Dahongyu formation of Great Wall system;8—purple-red and off-white argillaceous dolomite and flint-bearing dolomite of Tuanshanzi formation of Great Wall system;9— iron-bearing quartz coarse sandstone and green shale of Chuanlinggou formation of Great Wall system;10—gray-white giant thick layered quartzite sandstone of the third member of Changzhougou formation of Great Wall system;11—purple-red small conglomerate and gravel-bearing coarse sandstone of Changzhougou formation of Great Wall system;12—purple-red small conglomerate and gravel-bearing coarse sandstone of Changzhougou formation of Great Wall system;13—granite porphyry;14—quartz porphyry;15—normal fault, reverse fault and number;16—translational faults, faults of unknown nature and number;17—2012~2016 drilling;18—protoporphyry lead-zinc-silver deposit

Statistics of petrophysical parameters of a porphyry lead-zinc deposit in Hebei

Fig.1
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An analysis of induced polarization and geomagnetic anomalies in a porphyry lead-zinc deposit in Hebei(modified from reference [15])
1—protoporphyry lead-zinc-silver deposit;2—extreme point location and value;other legends are the same as Fig.1

A 1∶200 000 water system sedimentanomaly in a porphyry lead-zinc deposit in Hebei

Fig.1
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A 1∶50 000 water system sediment anomaly in a porphyry lead-zinc deposit in Hebei
1—gold anomaly;2—silver anomaly;3—lead anomaly;4—zinc anomaly;5—tungsten anomaly;6—tin anomaly;7—bismuth anomaly;8—molybdenum anomaly;9—arsenic anomaly;10—antimony anomaly;11—mercury anomaly;12—1∶50 000 water system anomalies and numbers;other legends are the same as Fig.1

Fig.1
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1∶10 000 rock anomaly in a porphyry lead-zinc deposit in Hebei
1—plane range of original porphyry lead-zinc deposit;2—gold anomaly;3—silver anomaly;4—lead anomaly;5—zinc anomaly;6—tungsten anomaly;7—copper anomaly; 8—molybdenum anomaly;9—arsenic anomaly;10—antimony anomaly;11—mercury anomaly; 12—1∶50 000 water system anomalies and numbers;13—section location and number;other legends are the same as Fig.1

Borehole halo curve diagram

Zonal index values of elements

Matrix table of element correlation coefficients

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