最近苏联的地质学家、地球物理学家、海洋学家正致力于从洋底的铁锰结核体中开采铁和锰的新方法的探索。铁锰结核体是一种矿物质,通常呈圆形。这些铁锰结核体在太平洋、大西洋、印度洋底占很大面积,把它们开采出来具有实际意义。为什么比重大于淤泥的铁锰结核体,几百万年也不陷入淤泥之中,而在表面上呢?到目前为止,这一反常现象仍未得出结论。众所周知,1毫米厚的洋底沉积物需积三千年, Recently, Soviet geologists, geophysicists and oceanographers are devoting themselves to the exploration of new methods of extracting iron and manganese from iron-manganese nodules on the ocean floor. Ferromanganese nodules are minerals that are usually round. These ferromanganese nodules occupy a large area in the Pacific Ocean, the Atlantic Ocean and the Indian Ocean. It is of practical significance to mine them. Why is the iron-manganese nodules heavier than silt, millions of years into the silt, but on the surface? So far, this anomaly has not yet concluded. As we all know, 1 mm thick ocean sediments need plot three thousand years,