Analysis on Prospecting Effect of Integrated Electromagnetic Methods in Deep Prospecting of Fengtai Erlihe Lead−Zinc Deposit
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摘要:
二里河铅锌矿是凤太矿集区中具有代表性的重要铅锌矿床之一，近些年找矿方向转向已知矿体深部及外围。根据二里河地区地质、地球物理特征，结合多年在凤太地区的综合地球物理找矿工作，分析了回线源瞬变电磁法、电性源短偏移距瞬变电磁法及广域电磁法在二里河地区的实际应用效果，对3种方法的特点和适用性进行总结，认为：回线源瞬变电磁法、电性源短偏移距瞬变电磁法及广域电磁法在该地区深部找矿具有可行性；回线源瞬变电磁法对于圈定矿体水平位置具有较好的效果，电性源短偏移距瞬变电磁法对低阻异常较为敏感，广域电磁法分辨率较高，同时探测深度可达到2500 m。此外针对二里河矿区的找矿工作，提出物探工作建议：采用以广域电磁法和电性源短偏移距瞬变电磁法为首选的综合电磁探测方法，同时应尽可能采用长剖面和面积性物探工作。
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关键词:
- 电磁法 /
- 回线源瞬变电磁法 /
- 电性源短偏移距瞬变电磁法 /
- 广域电磁法 /
- 深部找矿
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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表 1 岩矿（石）电性参数统计表
Table 1. Statistical table of electrical parameters of rock and ore
岩（矿）石名称 电阻率（Ω·m） 极化率（%） 最大值 最小值 平均值 最大值 最小值 平均值 绢云母千枚岩夹薄层灰岩 720 208 451 5.3 1.5 2.7 铁白云质千枚岩夹薄层灰岩 460 318 390 3.8 1.2 1.8 铁白云质千枚岩 536 215 431 3.4 0.8 1.6 含绿泥铁白云质千枚岩 910 153 507 1.9 1.0 1.3 绢云母千枚岩 1322 318 647 2.7 1.2 1.6 含碳生物灰岩 7854 508 1922 40.3 3.9 12.7 硅化灰岩 16707 13938 15323 5.3 1.0 2.7 结晶灰岩 17304 8023 11323 1.7 0.3 1.1 铅锌矿体 212 13 90 52.9 8.0 26.1 注：资料来源王瑞廷等（2012）。 
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[1] 陈明寿, 刁卫红, 王建涛. 陕西凤太矿铅锌矿集区矿床成因及找矿方向探讨[J]. 甘肃冶金, 2017, 39(1): 72-77 doi: 10.3969/j.issn.1672-4461.2017.01.017
CHEN Mingshou, DIAO Weihong, WANG Jiantao. Oregenesis and Prospecting Direction in the Feng-Tai Pb-Zn Deposit Cluster Area in Shanxi[J]. Gansu Metallurcy, 2017, 39(1): 72-77. doi: 10.3969/j.issn.1672-4461.2017.01.017
[2] 陈卫营, 李海, 薛国强, 等. 基于垂直磁场的SOTEM数据一维OCCAM反演及其应用于三维模型的效果[J]. 地球物理学报, 2017 60(9): 3667-3676
CHEN Weiying, LI Hai, XUE Guoqiang, et al. One-dimensional OCCAM inversion of SOTEM data based on vertical magnetic field and its application to three-dimensional model[J]. Journal of Geophysics, 2017 60(9): 3667-3676.
[3] 陈卫营, 薛国强, 崔江伟. 电性源瞬变电磁发射源形变对观测结果影响分析[J]. 地球物理学进展, 2015, 30(1): 126-132
CHEN Weiying, XUE Guoqiang, CUI Jiangwei. Analysis on the influence from the shape of electric source TEM transmitter[J]. Progress in Geophysics(in Chinese), 2015, 30(1): 126-132.
[4] 代金龙. 秦岭凤太矿田铅锌矿成矿特征分析[J]. 地下水, 2015, 37(3): 209-211
DAI Jinlong. Analysis on metallogenic characteristics of lead-zinc deposit in Fengtai ore field, Qinling[J]. Ground Water, 2015, 37(3): 209-211.
[5] 底青云, 王若. 可控源音频大地电磁数据正反演及方法应用[M]. 北京: 科学出版社, 2008: 1−192
DI Qingyun, WANG Ruo. Forward and inverse modeling of controllable source audio magnetotelluric data and its application[M]. Beijing: Science Press, 2008: 1−192.
[6] 高卫宏, 王瑞廷, 李青峰, 等. 西秦岭凤太矿集区西部铅锌成矿特征及找矿方向[J]. 矿产与地质, 2016, 30(2): 227-233
GAO Weihong, WANG Ruiting, LI Qingfeng, et al. Metallogenic characteristisc and prospecting direction of Pb-Zn deposits in the western part of Fengtai ore-concentrated area in West Qinling[J]. Mineral Resources and Geology, 2016, 30(2): 227-233.
[7] 耿涛, 郭培虹, 冯治汉, 等. 北秦岭华阳川地区复杂地形条件下隐伏硬岩型铀矿的地球物理勘查方法[J]. 西北地质, 2023, 56(2): 225−244.
GENG Tao, GUO Peihong, FENG Zhihan, et al. Geophysical Exploration Eethod of Concealed Hard Rock Type Uranium Deposit with Complex Topographic Conditions in Huayangchuan Area, North Qinling Mountains[J]. Northwestern Geology, 2023, 56(2): 225−244.
[8] 何继善. 广域电磁法和伪随机信号电法[M]. 北京: 高等教育出版社, 2010: 1−225
HE Jishan. Wide-area electromagnetic method and pseudo-random signal electrical method[M]. Beijing: Higher Education Press, 2010: 1−225.
[9] 何继善. 广域电磁法理论及应用研究的新进展[J]. 物探与化探, 2020, 44(05): 985-990
HE Jishan. New research progress in theory and application of wide field electromagnetic method[J]. Geophysical & Geochemical Exploration, 2020, 44(05): 985-990.
[10] 胡乔青, 王义天, 王瑞廷, 等. 西秦岭凤太矿集区八方山-二里河铅锌(铜)矿床成矿地质特征与矿床成因探讨[J]. 地质与勘探, 2013, 49(1): 99-112
HU Qiaoqing, WANG Yitian, WANG Ruiting, et al. Geological Characteristisc and Genesis of the Bafangshan-Erlihe Pb-Zn(-Cu) Deposit in the Fengxian-Taibai Ore Concentration Area, West Qinling[J]. Geology and Exploration, 2013, 49(1): 99-112.
[11] 李凤廷, 苗虎林, 付佳, 等. 那陵郭勒河下游重磁异常与铁多金属矿找矿预测[J]. 西北地质, 2023, 56(6): 155-165.
LI Fengting, MIAO Hulin, FU Jia, et al. Gravity and Magnetic Anomalies and Prospecting Prediction of Iron Polymetallic Deposits in the Downstream of Nalingguole River[J]. Northwestern Geology, 2023, 56(6): 155-165.
[12] 李红中, 杨志军, 周永章, 等. 秦岭造山带西段八方山-二里河Pb-Zn矿区硅质岩的微组构分析及其意义[J]. 地球科学(中国地质大学学报), 2009, 34(2): 12-17
LI Hongzhong, YANG Zhijun, ZHOU Yongzhang, et al. Microfabric Characteristics of Cherts of Bafangshan-Erlihe Pb-Zn Ore Field in the Western Qinling Orogen[J]. Earth Science-Journal of China University of Geosciences, 2009, 34(2): 12-17.
[13] 李永勤, 王瑞廷, 丁坤, 等. 陕西凤县八卦庙金矿脆韧性剪切带控矿特征及成矿模式探讨[J]. 西北地质, 2015, 48(01): 101-108
LI Yongqin, WANG Ruiting, DING Kun, et al. Ore-controlling Characteristisc and Metallogenic Model of Brittle Ductile Shear Zones of Baguamiao Gold Deposit in Fengxian County, Shaanxi[J]. Northwesten Geology, 2015, 48(01): 101-108.
[14] 李忠, 代达龙, 张小兵, 等. 个旧矿集区东区重力场特征及地质-地球物理找矿模型[J]. 成都理工大学学报(自然科学版), 2022, 49(6): 751−761.
LI Zhong, DAI Dalong, ZHANG Xiaobing, et al. Characteristics of gravity field and establishment of geological and geophysical prospecting model in east Gejiu ore concentration area[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2022, 49(6): 751−761.
[15] 刘天放, 李志聃. 矿井地球物理勘探[M]. 北京: 煤炭工业出版社, 1992: 1−36
LIU Tianfang, LI Zhiran. Mine geophysical exploration[M]. Beijing: Coal Industry Press, 1992: 1−36.
[16] 罗杰, 周仲礼, 邹天一, 等. 基于PSO-CNN的深部找矿预测模型构建[J]. 成都理工大学学报(自然科学版), 2022, 49(6): 697−708.
LUO Jie, ZHOU Zhongli, ZOU Tianyi, et al. Construction of deep prospecting prediction model based on PSO-CNN [J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2022, 49(6): 697−708.
[17] 毛景文, 李晓峰, 李厚民, 等. 中国造山带内生金属矿床类型、特点和成矿过程探讨[J]. 地质学报, 2005, 79(3): 342-372
MAO Jingwen, LI Xiaofeng, LI Houmin, et al. Types and Characteristics of Endogenetic Metallic Deposits in Orogenic Belts in China and Their Metallogenic Processes[J]. Acta Geologica Sinica, 2005, 79(3): 342-372.
[18] 滕吉文, 薛国强, 宋明春. 第二深度空间矿产资源探查理念与电磁法找矿实践[J]. 地球物理学报, 2022, 65(10): 3975-3985
TENG Jiwen, XUE Guoqiang, SONG Mingchun. Theory on exploring mineral resources in the second deep space and practices with electromagnetic method[J]. Chinese Journal of Geophysics, 2022, 65(10): 3975-3985.
[19] 滕菲, 任军平, 张国立, 等. 莫桑比克上利戈尼亚地区航磁、航放异常特征及钽–铌矿找矿方向[J]. 西北地质, 2023, 56(5): 49−60.
TENG Fei, REN Junping, ZHANG Guoli, et al. Aeromagnetic and Aeroradiometric Characteristics in Alto Ligonha Area, Mozambique and Prospecting Direction of Ta–Nb deposits[J]. Northwestern Geology, 2023, 56(5): 49−60.
[20] 田民民, 袁旭东, 张永让, 等. 凤县二里河铅锌矿床后续地质找矿探讨[J]. 矿产与地质, 2004, 18(2): 134-138
TIAN Minmin, YUAN Xudong, ZHANG Yongrang, et al. Discussion of Geological Prospecting in Erlihe Pb-Zn Deposit, Fengxian[J]. Mineral Resources and Geology, 2004, 18(2): 134-138.
[21] 王备战, 王瑞廷, 王宏宇, 等. 陕西凤太矿集区深部铅锌矿产资源潜力及地球物理找矿方向[J]. 地球科学与环境学报, 2020, 42(6): 801-818
WANG Beizhan, WANG Ruiting, WANG Hongyu, et al. Potential and Geophysical Prospecting Direction of Pb-Zn Mineral Resources in the Deep Area of Fengtai Ore-gathering Area, Shaanxi, China[J]. Journal of Earth Sciences and Envieonment, 2021, 43(3): 801-818.
[22] 王瑞廷, 王涛, 高章鉴, 等. 凤-太多金属矿集区主要金属矿床成矿系列与找矿方向[J]. 西北地质, 2007, 40(02): 77-84
WANG Ruiting, WANG Tao, GAO Zhangjian, et al. The Main Metal Deposits Metallogenic Series and Exploration Direction in Feng-Tai Ore Cluster Region, Shaanxi Province[J]. Northwesten Geology, 2007, 40(02): 77-84.
[23] 王瑞廷, 王东生, 代军治, 等. 秦岭造山带陕西段-主要矿集区铅锌铜金矿综合勘查技术研究[M]. 北京: 地质出版社, 2012: 1−262
WANG Ruiting, WANG Dongsheng, DAI Junzhi, et al. Study on comprehensive exploration technology of lead, zinc, copper and gold deposits in Shaanxi section of Qinling orogenic belt and main ore concentration areas[M]. Beijing: Geological Publishing House, 2012: 1−262.
[24] 王瑞廷, 张革利, 李青峰, 等. 秦岭凤太铅锌-金矿集区成矿规律与找矿预测[J]. 地球科学与环境学报, 2021, 43(3): 528-548
WANG Ruiting, ZHANG Geli, LI Qingfeng, et al. Metallogenic Regularity and Prospecting Prediction of Fengtai Pb-Zn-Au Ore Concentration Area in Qinling, China[J]. Journal of Earth Sciences and Envieonment, 2021, 43(3): 528-548.
[25] 王瑞廷, 秦西社, 李青锋, 等. 西秦岭凤太铅锌矿集区成矿特征、找矿预测及勘查方法技术组合[J]. 西北地质, 2023, 56(5): 85−97.
WANG Ruiting, QIN Xishe, LI Qingfeng, et al. Metallogenic Characteristics, Prospecting Prediction and Exploration Methods Combination of Fengtai Pb−Zn Orefield, West Qinling[J]. Northwestern Geology, 2023, 56(5): 85−97.
[26] 王义天, 刘协鲁, 胡乔青, 等. 陕西凤太矿集区柴蚂金矿床脉状闪锌矿Rb-Sr同位素测年及意义[J]. 西北地质, 2018, 51(03): 121-132 doi: 10.3969/j.issn.1009-6248.2018.03.011
WANG Yitian, LIU Xielu, HU Qiaoqing, et al. Rb-Sr isotopic Dating of Vein-like Sphalerites from the Chaima Au Deposit in Fengxian-Taibai Ore-concentration Area, Shaanxi Province and Its Geological Significance[J]. Northwesten Geology, 2018, 51(03): 121-132. doi: 10.3969/j.issn.1009-6248.2018.03.011
[27] 魏丽, 杨文博, 马尚伟, 等. 秦岭凤太矿集区铅锌金矿区域成矿规律研究[J]. 矿产与地质, 2021, 35(01): 1-8
WEI Li, YANG Wenbo, MA Shangwei, et al. Research of regional metallogenic regularity of lead-zinc-gold deposits in Fengtai ore concentration area, Qinling[J]. Mineral Resources and Geology, 2021, 35(01): 1-8.
[28] 文耀辉. 西秦岭凤太矿集区银洞山铅锌矿床成矿地质特征及成因探讨[J]. 中国金属通报, 2020(8): 49-51
WEN Yaohui. Geological characteristics and genesis of the Yindongshan lead-zinc deposit in the Fengtai ore concentration area of the West Qinling Mountains[J]. China Metal Bulletin, 2020(8): 49-51.
[29] 薛国强, 陈卫营, 周楠楠, 等. 接地源瞬变电磁短偏移深部探测技术[J]. 地球物理学报, 2013, 56(1): 255-261
XUE Guoqiang, CHEN Weiying, ZHOU Nannan, et al. Deep exploration technology of transient electromagnetic short migration of grounding source[J]. Journal of Geophysics, 2013, 56(1): 255-261.
[30] 薛国强, 陈卫营, 武欣, 等. 电性源短偏移距瞬变电磁研究进展[J]. 中国矿业大学学报, 2020, 49(02): 215-226
XUE Guoqiang, CHEN Weiying, WU Xin, et al. Review on research of short-offset transient electromagnetic method[J]. Journal of China University of Mining&Technology, 2020, 49(2): 215-226.
[31] 叶天竺, 吕志成, 庞振山, 等. 勘查区找矿预测理论与方法[M]. 北京: 地质出版社, 2014: 70−102
YE Tianzhu, LV Zhicheng, PENG Zhenshan, et al. Theory and method of prospecting prediction in exploration area[M]. Beijing: Geological Publishing House, 2014: 70−102.
[32] 张革利, 王瑞廷, 田涛, 等. 陕西凤太矿集区东塘子铅锌矿床地质-地球化学特征与成因[J]. 地球科学与环境学报, 2018, 40(5): 520-534
ZHANG Geli, WANG Ruiting, TIAN Tao, et al. Geological-geochemical Characteristics and Genesis of Dongtangzi Pb-Zn Deposit in Fengxian-Taibai Ore Concentration Area of Shaanxi, China[J]. Journal of Earth Science and Environment, 2018, 40(5): 520-534.
[33] 张津瑞, 陈华, 任军平, 等. 矿产资源潜力评价方法对比及其发展趋势探讨[J]. 西北地质, 2023, 56(2): 292−305.
ZHANG Jinrui, CHEN Hua, REN Junping, et al. Mineral Resource Assessment Methods Comparison and Its Development Trend Discussion[J]. Northwestern Geology, 2023, 56(2): 292−305.
[34] 张耀斌, 姚善杰, 王双彦, 等. 从凤太矿田找矿历史谈找矿方向[J]. 甘肃冶金, 2016, 38(1): 103-105
ZHANG Yaobin, YAO Shanjie, WANG Shuangyan, et al. From the Fengtai Ore Prospecting Direction of History[J]. Gansu Metallurcy, 2016, 38(1): 103-105.
[35] 周小康, 李维成, 董王仓, 等. 陕西省铅锌矿资源特征及时空分布规律概论[J]. 西北地质, 2020, 53(3): 127-139
ZHOU Xiaokang, LI Weicheng, DONG Wangcang, et al. A preliminary Study of the Characteristics of Lead-Zinc Deposits in Shaanxi Province and Their Distribution Laws[J]. Northwesten Geology, 2020, 53(3): 127-139.
[36] 祝新友, 王瑞廷, 汪东波. 西秦岭铅锌金铜银矿床成矿模式研究及找矿预测[M]. 北京: 地质出版社, 2011: 1−212
ZHU Xinyou, WANG Ruiting, WANG Dongbo. Study on Metallogenic Model and Prospecting Prediction of Lead-Zinc Gold-Copper-Silver Deposit in West Qinling[M]. Beijing: Geological Publishing House, 2011: 1−212.
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