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在我国社会主义革命和社会主义建设的实践中,由于保卫和建设海防、发展航运交通和沿海建设事业,以及多快好省地开发海底资源的需要,近年来,在毛主席革命路线的指引下,海洋地质学在我国有了极其迅猛的发展。地球表面约有72％为海洋所覆盖,陆地的面积仅占地球表面28％以下,还不足1/3;而在过去的地史时代中,现今的大片陆地也曾不只一次地被海洋所覆盖。所以为了正确地掌握海相地层找矿的规律,查明现代海底有用矿产的分布和形成环境;为了正确地认识海陆变迁和海
In the practice of socialist revolution and socialist construction in our country, due to the need to defend and build coastal areas, develop shipping traffic and coastal construction and to develop seabed resources more efficiently and economically, in recent years, under the guidance of Chairman Mao’s revolutionary line Marine geology has developed extremely rapidly in our country. About 72% of the Earth’s surface is covered by oceans and the land area accounts for only 28% or less of the Earth’s surface, less than 1/3. In the past Geo-era, today’s vast land has been covered more than once by the oceans . Therefore, in order to correctly grasp the law of prospecting in marine strata and find out the distribution and formation environment of useful minerals in modern seabed; in order to correctly understand the changes of sea and land and the sea