论文部分内容阅读
根据冶金地质普查找矿工作的特点,航磁主要是在已知矿区(带)外围开展以1∶2.5万比例尺的航磁测量,为扩大已知矿区(带)的找矿远景,寻找新的矿区,解决有关地质构造和其他地质问题提供找矿信息.1980年以前,冶金工业部航磁测量的主要任务是寻找磁铁矿.测区主要选择在北方前震旦系老变质岩或中酸性岩浆岩分布区,直接寻找沉积变质铁矿、夕卡岩型磁铁矿和火山岩型磁铁矿.1981年以后,航磁任务扩大,除继续寻找上述几种类型的铁矿外,还大力开展了普查多金属和贵重金属矿的间接找矿工作.航空物探队建队17年来,根据我们实践认识,航磁在冶金地质普查找矿工作中的作用主要是: 1.多、快、好、省地提供了主要铁矿区(带)及其外围的航磁资料,在全国几个重点铁矿区(带),如鞍本、冀东、吕梁、五台、白云鄂博、
According to the metallurgy geology prospecting work characteristics, aeromagnetic mainly in the known mining area (belt) to carry out 1: 25000 scale aeromagnetic surveys, in order to expand the prospect of known mining (band) prospects, looking for new Mining areas, to solve the geological structure and other geological problems to provide prospecting information .1980 years ago, the Ministry of Metallurgical Industry aeromagnetic survey is the main task of looking for magnetite. The main choice of measuring area in the northern pre-Sinian metamorphic rocks or magmatic Rock distribution area directly looking for sedimentary metamorphic iron ore, skarn-type magnetite and volcanic magnetite.After 1981, the expansion of aeromagnetic mission, in addition to continue to find the above types of iron ore, but also vigorously carried out Census and more precious metals and ore exploration work of the indirect.Airportophysical team 17 years ago, based on our understanding of practice, aeromagnetic metallurgy geological prospecting work in the main role is: 1. More, faster, better, provincial Provides the main iron ore zone (belt) and the periphery of the aeromagnetic data in several key iron ore areas (belt), such as the sadan, Jidong, Luliang, Wutai, Bayan Obo,