Analysis on Prospecting Effect of Integrated Electromagnetic Methods in Deep Prospecting of Fengtai Erlihe Lead−Zinc Deposit

CHEN Jing; GUO Wenbo; WANG Hongyu; ZHANG Jianjun; GU Xin; WANG Wei; FENG Fan; LIU Min; ZHU En

doi:10.12401/j.nwg.2023177

Northwestern Geology > 2024 > 57(1): 196-206. > DOI: 10.12401/j.nwg.2023177

CHEN Jing，GUO Wenbo，WANG Hongyu，et al. Analysis on Prospecting Effect of Integrated Electromagnetic Methods in Deep Prospecting of Fengtai Erlihe Lead−Zinc Deposit[J]. Northwestern Geology，2024，57（1）：196−206. doi: 10.12401/j.nwg.2023177

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Analysis on Prospecting Effect of Integrated Electromagnetic Methods in Deep Prospecting of Fengtai Erlihe Lead−Zinc Deposit

CHEN Jing^{1, 2,},
GUO Wenbo^2, ,,
WANG Hongyu²,
ZHANG Jianjun³,
GU Xin⁴,
WANG Wei²,
FENG Fan²,
LIU Min²,
ZHU En²

1.
Northwest Nonferrous Geological Mining Group Limited Company, Xi’an 710054, Shaanxi, China
2.
Geophysical and Geochemical Exploration Corporation, Bureau of Geological Exploration for Nonferrous Metals in Northwest China, Xi’an 710068, Shaanxi, China
3.
Shaanxi Nonferrous Metals Holding Group Co., Ltd., Xi’an 710000, Shaanxi, China
4.
Xi’an Northwest Geological Institute for Nonferrous Metals Co., Ltd, Xi’an 710054, Shaanxi, China

More Information

Received Date: February 13, 2023
Revised Date: November 05, 2023
Accepted Date: November 27, 2023
Available Online: November 15, 2023

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Abstract

Abstract

Erlihe lead-zinc deposit is one of the representative large-middle lead-zinc deposits in Fengtai orefield. In recent years, the prospecting direction has shifted to the deep and periphery of the known ore body. According to the geological and geophysical characteristics of Erlihe area and combined with the comprehensive prospecting work in Fengtai area for many years, this paper analyzes the practical application effects of loop source transient electromagnetic method (TEM), electrical source short-offset transient electromagnetic method(SOTEM) and wide field electromagnetic method in Erlihe area. It is concluded that TEM, SOTEM and wide field electromagnetic method are feasible in deep prospecting for this area; TEM has a good effect on delineating the horizontal position of the ore body. SOTEM is more sensitive to low resistivity anomaly, the resolution of wide field electromagnetic method is high, and the detection depth can reach 2500 meters; According to the characteristics of Erlihe lead-zinc deposit, it is suggested to adopt the comprehensive electromagnetic detection method with wide field electromagnetic method and SOTEM as the first choice, and use long sections and area geophysical exploration as far as possible.

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Analysis on Prospecting Effect of Integrated Electromagnetic Methods in Deep Prospecting of Fengtai Erlihe Lead−Zinc Deposit