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国外金属矿物探1.概况据报道,西方国家金属和非金属矿物探的投资为5368.7万美元,占勘探总投资的1.8%.其中地面物探投资2303.5万美元,占金属和非金属矿物探总投资的42.9%,航空物探为2736.9万美元,占50.9%,地下物探为328.3万美元,占6.2%. 苏联的物探工作量占地质勘探总工作量的22～23%.地震方法占物探总工作量的48%,测井占16%.电法占11%,重力法占9%,磁法占7%.有色与稀有金属矿物探占金属与非金属矿物探总工
Foreign metal mineral exploration 1. Overview It is reported that Western countries, metal and non-metallic mineral exploration investment of 53.687 million US dollars, accounting for 1.8% of the total exploration investment, of which geophysical exploration investment 230.35 million US dollars, accounting for the total investment in metal and non-metallic mineral exploration Of the total geophysical exploration 42.9%, aviation geophysical exploration 27.369 million US dollars, accounting for 50.9%, underground geophysical exploration is 3.283 million US dollars, accounting for 6.2% .Subjects geophysical exploration in the Soviet Union accounted for 22 ~ 23% of the total amount of geological exploration. 48%, logging 16% .Electric method accounted for 11%, gravity method accounted for 9%, magnetic method accounted for 7% .Colorful and rare metal mineral exploration metal and non-metallic mineral exploration Chief Engineer