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Prospecting progress of aeromagnetic anomalies in the periphery of the Hetaoping Pb-Zn deposit, Baoshan, Yunnan Province |
Jing-Zi HE1,2, Xu-Zhao HUANG1, Teng-Fei GE1, Zheng-Guo FAN1, Da-Long DAI3, Si-Xun WANG1 |
1. China AeroGeophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China 2. School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China 3. Yunnan Institude of Geological Survey, Kunming, Yunnan 650216, China |
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Abstract This study belongs to the aeromagnetic anomaly verification part of the 1∶ 50,000 high precision aeromagnetic survey project in Tengchong-Yunxian area, Yunnan Province. In order to verify some selected aeromagnetic anomalies in the periphery of the Hetaoping Pb-Zn deposit, the authors carried out geological, geophysical and geochemical survey at the abnormal points. The 2.5D human-computer interaction inversion was used to quantitatively analyze the mineralization potential. The prospecting potential of Fe-Cu-Pb-Zn-polymetallic ore in the periphery of Hetaoping Pb-Zn deposit is proved to be huge, which provides the basis for further prospecting. At the same time, it is proved that after the rapid scanning using aerial geophysical prospecting, researchers should carry out high precision ground geophysical, geochemical and geological techniques and other comprehensive verification methods for positioning, distinguishing and evaluating meaningful anomalies, which could be an economical, fast and efficient air-ground combinational survey method.
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Received: 19 January 2018
Published: 19 December 2018
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岩性 | 样品数 | 磁化率κ/(10-5SI) | | 剩余磁化强度Jr/(10-3 A/m) | 变化范围 | 均值 | | | 变化范围 | 均值 | 粉砂岩,硅化、黄铁矿化细砂岩 | 13 | 0.2~266 | 221 | | 0.1~231 | 100 | 泥岩,泥质粉砂岩 | 15 | 0.2~271 | 62 | | 0.1~236 | 8 | 灰岩,细晶灰岩,泥灰岩 | 17 | 239~339 | 91 | | 5~34 | 13 | 钙质、粉砂质板岩,大理岩化灰岩 | 12 | 30~256 | 118 | | 6~63 | 19 | 碎裂岩、石英脉 | 4 | 63~312 | 199 | | 20~108 | 57 | 一般基性岩 | 15 | 20~113 | 72 | | 5~111 | 22 | 辉绿岩 | 4 | 138~1090 | 477 | | 11~869 | 249 | 黄铁矿化磁铁矿化基性岩 | 4 | 7803~52258 | 24792 | | 3512~24349 | 18046 | 超基性岩 | 3 | 61325~442103 | 217454 | | 194188~560809 | 338357 | 黄铁矿、褐铁矿、铜矿矿石 | 8 | 49~153 | 86 | | 7~91 | 58 | 镜铁矿化、黄铁矿化强硅化矿石 | 7 | 3596~545 | 453 | | 54~100 | 75 | 磁铁黄铁矿矿石,磁铁矿矿石 | 6 | 3166~62476 | 40533 | | 1539~136516 | 61055 | 黄铁矿化磁铁矿石(坑道中) | 8 | 143868~1426537 | 785802 | | 119390~448215 | 283803 | 矽卡岩 | 9 | 66~16381 | 3737 | | 9~10291 | 2073 | 花岗岩 | 6 | 15~1540 | 400 | | 5~1310 | 178 |
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地质体序号 | 地质体 | 磁化倾角 I/(°) | 磁化偏角 D/(°) | 磁化强度 Jr/(10-3 A/m) | 纵向延伸 /m | ① | 寒武纪核桃坪组 | 39.3 | -0.9 | 4.0 | 400 | ② | 寒武纪沙河厂组 | 39.3 | -0.9 | 4.0 | 400 | ③ | 矽卡岩 | 39.3 | -0.9 | 110 | 400 | ④ | 花岗岩 | 39.3 | -0.9 | 8.0 | 400 | ⑤ | 磁铁矿矿体 | 39.3 | -0.9 | 18970 | 400 |
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