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人类进入二十世纪八十年代,世界文明与进步需要愈来愈多的矿产资源.然而全球范围的找矿活动却面临严峻的挑战.美国和日本把矿床分为三类:A类为出露于地表的矿床;B类为矿体未出露而含矿蚀变带出露地表的矿床:C类为地表无任何指示矿物和地球化学显示的矿床.找矿勘探历史表明1960年以前发现的主要是A类矿床,将来找到这类矿床的可能性小了.1960年以后发现的主要是B和C类矿床.我国地质系统三十年来经过勘探的、比较大的、取得储量的矿床共350个,其中地表矿占绝对多数,而盲矿是很少的.1965年前用15年时间找到280个矿床;1966年以后也是15年时间只找到70个.前15年找到五分之四的矿,后15年只找到五分之一的矿.总之,不论是国外还是国内找矿的发展趋势是地表矿愈来愈少,找矿深度愈来愈大.我
Human beings enter the 1980s, world civilization and progress need more and more mineral resources.However, the prospecting activities in the world are facing serious challenges.The United States and Japan divided the deposit into three categories: A category is exposed Deposits on the surface of the earth; deposits of B on the surface of the ore bodies that are not exposed and whose ore-bearing alteration zones are exposed on the surface: Category C is a mineralized and geochemically displayed deposit without any indication on the surface of the ore. Mainly A-type deposits, are less likely to be found in the future and are mainly found in the B and C-type deposits after 1960. In the past 30 years, China’s geological system has undergone exploration, and relatively large reserves have been mined for a total of 350 Of which, surface mines account for the absolute majority, while blind mines are rare, finding 280 deposits in 15 years from 1965 and 70 in 15 years since 1966. Four-fifths of them were found in the first 15 years Mine only found one fifth of the mine in 15 years.In a word, the development trend of prospecting both abroad and domestically is that there are fewer surface mines and the prospecting depth is getting bigger and bigger.