论文部分内容阅读
浩瀚的海洋,蕴藏着无尽宝藏。随着现代科学技术的不断发展,对海洋的调查规模不断扩大,人们对海洋的认识也就不断深化。继五十年代发现锰结核,七十年代发现块状硫化物之后,现在又发现了一种新的矿产资源——锰壳。锰壳不同于锰结核,它大多呈被壳状覆盖在水深不到4500米的海山顶部和斜坡上以及岛屿的水下部分。品位最高的锰壳位于水深不到2,000米的地方。锰壳一般厚几厘米,在莱恩群岛和中太平洋海山山脉东侧最厚可达9厘米,平均厚度至
The vast ocean, contains endless treasure. With the continuous development of modern science and technology, the scale of investigation of the oceans has been continuously expanded, and people’s understanding of the oceans has also been deepened. Following the discovery of manganese nodules in the 1950s and the discovery of massive sulphides in the 1970s, a new mineral resource, manganese shell, has now been discovered. Manganese shells, unlike manganese nodules, are mostly covered in shells on the top and slopes of seamounts and the underwater parts of the island, less than 4,500 meters deep. The highest grade manganese shell is located less than 2,000 meters deep. Manganese shell is generally a few centimeters thick, in the Ryan Islands and the eastern part of the Central Pacific seamounts up to a maximum thickness of 9 cm, the average thickness of