张琳,张健,沈志明.甘肃肃北县狼娃山铁矿床磁异常特征及其与成矿的关系[J].西北地质,2021,54(3):270-276 ZHANG Lin,ZHANG Jian,SHEN Zhiming.Magnetic Anomaly Characteristics of Gansu Langwashan Iron Deposit and the Relationship with Mineralization[J].Northwestern Geology,2021,54(3):270-276
甘肃肃北县狼娃山铁矿床磁异常特征及其与成矿的关系
Magnetic Anomaly Characteristics of Gansu Langwashan Iron Deposit and the Relationship with Mineralization
投稿时间:2020-04-05  修订日期:2020-12-03
DOI:10.19751/j.cnki.61-1149/p.2021.03.025
中文关键词:  狼娃山铁矿;磁异常特征;与成矿的关系;肃北县;甘肃
英文关键词:Langwashan iron deposit;magnetic anomaly characteristics;mineralization relationship;Subei county;Gansu province
基金项目:矿权人委托地质勘查项目“甘肃省肃北蒙古族自治县狼娃山铁矿补充详查”(2012-2013)。
作者单位
张琳 甘肃省地质矿产勘查开发局第四地质矿产勘查院, 甘肃 酒泉 735000 
张健 甘肃省地质矿产勘查开发局第四地质矿产勘查院, 甘肃 酒泉 735000 
沈志明 甘肃省地质矿产勘查开发局第四地质矿产勘查院, 甘肃 酒泉 735000 
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中文摘要:
      狼娃山铁矿床地处甘肃北山地区白山—狼娃山航磁异常带,通过对区域地质成矿背景和磁异常特征进行综合研究后,认为该区属于岛弧火山岩成矿区,是寻找火山岩型铁矿有利地带。矿床内强度较高的磁异常集中区均为地表及浅部矿体引起;强度较低的宽缓磁异常是深部隐伏磁性体的反映;环形强磁区中心的弱磁区可能是受周边强磁性影响,仍具有较好的找矿远景。该矿床是甘肃北山地区较重要的铁矿类型,磁异常的解剖研究成果对寻找同类型矿床具有较好的指导作用。
英文摘要:
      Langwashan iron deposit is located in the aeromagnetic anomaly zone of Beishan area in Gansu province. Based on the comprehensive study of the regional geological metallogenic background and the characteristics of the magnetic anomaly, it is considered that the iron deposit belongs to the metallogenic island arc volcanic rock, favourable for volcanic iron deposits. The intensive magnetic anomaly areas in the deposit are from the surface or shallow of ore bodies;the wide-and-slow magnetic anomaly is the reflection of the deeply buried magnetic body; the weak magnetic areas in the center of the ring-shaped strong magnetic area, probably influenced by the peripheral strong magnetism, still have good prospecting potential.Langwashan iron deposit is important in Beishan area, hence the results of the magnetic anomalies can guide the exploration of similar deposits.
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