摘要
东大山磁铁矿地处阿拉善隆起Cu-Ni-Pt-Fe-REE-P-石墨-芒硝-盐类成矿带西缘,属于产在前长城系龙首山群一套变质岩中的沉积变质型磁铁矿床,分析其航磁异常特征及找矿标志对同类型矿床勘查具有借鉴意义。通过收集矿区地质资料,基于在矿区及周边开展的1∶5万航磁测量及异常查证情况,分析了矿区地质、地球物理和遥感影像特征,提出了沉积变质型铁矿的找矿标志,并圈定了找矿远景区1处。
The Dongdashan magnetite ore deposit in Yongchang County is located in the western margin of Cu-Fe-Ni-Pt-REE-P-graphite,glauber's salt ore belt in the Alashan uplift.It is a sedimentary-metamorphic magnetite ore deposit occurring in a set of metamorphic rocks of the pre-Changcheng System Longshoushan Group.Geological,geophysical and remote ensing characteristics and prospecting marks of the deposit are analyzed.The analysis can be referred to prospecting of the similar deposits in the area.And 1 target has been located according to the analysis.
引文
[1]张新虎,等.甘肃省区域成矿及找矿[M].北京:地质出版社,2013:600.
[2]潘桂棠,肖庆辉,陆松年,等.中国大地构造单元划分[J].中国地质,2009,26(1):4-8.
[3]甘肃省地质矿产局.甘肃省区域地质志[M].北京:地质出版社,1989.
[4]汤中立,等.华北古陆西南缘(龙首山-祁连山)成矿系统及成矿构造动力学[M].北京:地质出版社,2002:223-226.
[5]余超,等.甘肃省铁矿资源潜力评价成果报告[R].北京:全国地质资料馆,2012.
[6]陈江源,牛家骥,黄亮.甘肃省龙首山地区航空物探异常查证成果报告初稿[R].石家庄:核工业航测遥感中心,2015:108-124.
[7]谭文娟,杨合群,张小平,等.祁连及邻区成矿区带的划分[J].地质找矿论丛,2012,27(1):9-15.
[8]孙栋华,石岩,等.甘肃省龙首山地区1∶5万航空物探调查成果报告初稿[R].石家庄:核工业航测遥感中心,2014:301-302.