论文部分内容阅读
美国第一任总统华盛顿说过:矿业和农业是工业的基础.1976年美国年平均矿石消耗量为每人20吨,其中4吨岩石、4吨砂砾、半吨钢铁、3.5吨石油、2吨天然气等.比20年前翻了一番.人们已认识到自然资源是不可再生的.人们最初只担心石油和天然气,现在也对一些资源如铬、钛、锰、铌、锂、钴、镍等所谓战略物资感到关切,就是铜也只够开采30～40年了. 在未来的十年中,由于人类社会对矿物资源的进一步的需求,促进了应用地球学科的研究,由于板块理论进一步用于研究大陆壳,因而有理由相信地学将得到长足的发展.我认为下列几方面应该是美国地学研究的主要内容. 1.对大陆壳的构造和演化作详尽的研究.板块理论出自对大洋盆地的研究.我们要利用这个理论去研究大陆壳的构造和演化.这将有助于矿
Washington, the first president of the United States, said that mining and agriculture are the industries’ foundations. In 1976, the average annual ore consumption in the United States was 20 tons per person, of which 4 tons of rock, 4 tons of gravel, half a ton of steel, 3.5 tons of oil, 2 tons Gas, etc. More than two decades ago, it has been recognized that natural resources are non-renewable. People initially only worried about oil and gas, and now also on some resources such as chromium, titanium, manganese, niobium, lithium, cobalt, nickel Such as the so-called strategic material is concerned that copper is only enough for mining 30 to 40 years in the next decade, due to the further needs of human society for mineral resources, and promote the application of earth science research, the plate theory to further use In the study of the continental crust, there are reasons to believe that geosciences will be greatly developed.I think the following aspects should be the main content of the study of geoscience in the United States.A detailed study on the structure and evolution of the continental crust.Plate theory from the ocean basin We need to use this theory to study the structure and evolution of continental crust which will help mine