中文摘要:文章运用重磁方法以辽宁建昌县马道铁矿找矿为例，说明了重磁法的找矿效果，特别指出重力、磁法的科学组合是勘查评价铁矿、区分磁异常性质、寻找富铁矿的有效综合找矿方法。通过对一磁异常进行重新解释和评价，最终验证该异常为一大型鞍山式沉积变质磁铁矿引起的。同时说明GIS、MRAS计算技术模拟、判别分析等现代先进勘探技术的综合运用，是在老矿山的深部和外围铁矿勘查过程中的重要手段。因此，在对危机矿山的研究中，对如何加深地球物理异常的解释和评价等问题，应予以高度重视。
Abstract:The iron and steel industry has been developing very rapidly in China since 1990s, but the ironstone throughput remains unsatisfactory, which has posed a really austere situation that the gap of domestic ironstone supply is continuously increasing. Such a situation calls for a substantial strengthening of geological iron exploration. Although the gravity and magnetic methods are effective in iron exploration and evaluation, they have many shortcomings in practical application. With a case study, the author demonstrates the effectiveness of the gravity and magnetic methods in iron exploration, and emphatically points out that the optimal combination of the two methods constitutes an effective integrated exploration means for evaluation of iron deposits, differentiation of magnetic anomalies and prospecting for rich iron ore bodies. In addition, the integration of such advanced modern techniques as GIS, MRAS and differentiation analysis is also necessary in the deep and peripheral iron exploration around the known mines. Exemplified by the Madao iron ore deposit in Jianchang County, Liaoning Province and based on re_interpretation and re_evaluation of the magnetic anomalies, this paper reveals that the anomalies are caused by a large_size Anshan style metagenetic magnetite deposit. It is thus concluded that, in the study of so_called critical mines, more attention should be paid to the correct intensified interpretation and evaluation of geophysical anomalies.
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基金项目:中国地质调查局地质调查项目(编号:200310200003 )“八家子银铅锌矿等大型危 机矿山找矿示范研究”
引用文本：
董英君.2006.应用重磁方法勘查铁矿的效果——以辽宁建昌县马道铁矿为例[J].矿床地质,25(3):321~328董英君.2006.Effects of applying gravity and magnetic method to exploration of iron deposits: Case study of Madao iron deposit in Jianchang County, Liaoning Province [J].Mineral Deposits25(3):321~328
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