马明,高继雷,高明波, 等. 鲁西莱芜地区地球物理特征及富铁矿床勘查模型建立[J]. 华北地震科学,2020, 38(2):13-20. doi:10.3969/j.issn.1003−1375.2020.02.003.
引用本文: 马明,高继雷,高明波, 等. 鲁西莱芜地区地球物理特征及富铁矿床勘查模型建立[J]. 华北地震科学,2020, 38(2):13-20. doi:10.3969/j.issn.1003−1375.2020.02.003.
MA Ming,GAO Jilei,GAO Mingbo, et al. Geophysical Characteristics of Laiwu Area in Western Shandong Province and Establishment of Exploration Model for Iron Rich Deposits[J]. North China Earthqauke Sciences,2020, 38(2):13-20. doi:10.3969/j.issn.1003−1375. 2020.02.003.
Citation: MA Ming,GAO Jilei,GAO Mingbo, et al. Geophysical Characteristics of Laiwu Area in Western Shandong Province and Establishment of Exploration Model for Iron Rich Deposits[J]. North China Earthqauke Sciences,2020, 38(2):13-20. doi:10.3969/j.issn.1003−1375. 2020.02.003.

鲁西莱芜地区地球物理特征及富铁矿床勘查模型建立

Geophysical Characteristics of Laiwu Area in Western Shandong Province and Establishment of Exploration Model for Iron Rich Deposits

  • 摘要: 鲁西莱芜地区是国内重要的富铁矿基地之一,是典型的与中基性侵入岩有关的矽卡岩型铁矿,矿石品位高、储量大。该区铁矿找矿采用地面磁测、航空磁测和重力测量作为主要方法,在区内圈定多个物探异常,累计探明大中小型富铁矿床40余个。在此基础上总结分析该区富铁矿成矿规律,介绍张家洼典型矿床磁异常特征,建立莱芜地区富铁矿地质-地球物理综合勘查模型,得到以下认识:①航磁、重力异常圈定隐伏岩体效果好;②地质、物探密切配合是正确评价异常的关键;③研究低缓异常必须高精度;④要注重研究磁场的局部特征变化;⑤突破乱磁场区可能取得找矿实践。

     

    Abstract: Laiwu area in western Shandong Province is one of the important High-grade Fe ores bases in China. It is a typical skarn type iron ore related to medium basic intrusive rocks, with high grade and large reserves. The main methods of iron ore prospecting in this area are ground magnetic survey, aeromagnetic survey and gravity survey. Several geophysical anomalies have been identified in the inner circle of the area, and more than 40 large, medium and small iron rich deposits have been explored. On this basis, the metallogenic law of the rich iron ore in this area is summarized and analyzed, and the comprehensive geological geophysical exploration model of the rich iron ore in Laiwu area is established. The following conclusions are obtained: ① The effect of aeromagnetic and gravity anomalies in delineating concealed rock mass is good; ② Close cooperation of geological and geophysical exploration is the key to correct evaluation of anomalies; ③ High precision is necessary to study low and slow anomalies; ④ Local research of magnetic field should be emphasized; ⑤ Breaking through the disordered magnetic field area may lead to prospecting practice.

     

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