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THE DISCOVERY OF THE DAIJIAZHUANG Zn-Pb DEPOSIT IN TANCHANG COUNTY,GANSU PROVINCE AND THE EFFECTS OF GEOPHYSICAL-GEOCHEMICAL PROSPECTING METHODS

Xie Zhi-feng

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Abstract

The ores in the Daijiazhuang Zn-Pb deposit in Tanchang County of Gansu Province are mainly of the oxidation type and the ore bodies are hosted by bioclastic limestone and silicalite formed in shallow-sea facies and biohermal facies.Ore bodies are controlled by NW-trending tenso-shear faults and their subsidiary fractures.The electrical properties of the rocks and ores are obviously different and the determined IP anomalies are distributed along the NW-trending belt.All this is consistent with the results of Pb,Zn,Ag,As,Sb,Au and Hg soil geochemical measurements.Based on geophysical and geochemical studies,the authors found some ore bodies and put up the geological-geophysical-geochemical prospecting criteria.

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What this paper is about

The ores in the Daijiazhuang Zn-Pb deposit in Tanchang County of Gansu Province are mainly of the oxidation type and the ore bodies are hosted by bioclastic limestone and silicalite formed in shallow-sea facies and biohermal facies.Ore bodies are controlled by NW-trending tenso-shear faults and their subsidiary fractures.The electrical properties of the rocks and ores are obviously different and the determined IP anomalies are distributed along the NW-trending belt.All this is consistent with the results of Pb,Zn,Ag,As,Sb,Au and Hg soil geochemical measurements.Based on geophysical and geochemical studies,the authors found some ore bodies and put up the geological-geophysical-geochemical prospecting criteria.

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Available abstract

The ores in the Daijiazhuang Zn-Pb deposit in Tanchang County of Gansu Province are mainly of the oxidation type and the ore bodies are hosted by bioclastic limestone and silicalite formed in shallow-sea facies and biohermal facies.Ore bodies are controlled by NW-trending tenso-shear faults and their subsidiary fractures.The electrical properties of the rocks and ores are obviously different and the determined IP anomalies are distributed along the NW-trending belt.All this is consistent with the results of Pb,Zn,Ag,As,Sb,Au and Hg soil geochemical measurements.Based on geophysical and geochemical studies,the authors found some ore bodies and put up the geological-geophysical-geochemical prospecting criteria.

Key concepts: Geology, Prospecting, Geochemistry, Facies, Shear zone, Mining engineering, Geomorphology, Tectonics

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THE DISCOVERY OF THE DAIJIAZHUANG Zn-Pb DEPOSIT IN TANCHANG COUNTY,GANSU PROVINCE AND THE EFFECTS OF GEOPHYSICAL-GEOCHEMICAL PROSPECTING METHODS — Research Paper | ScholarLens