Chemical composition of ocean Fe-Mn ores

The monograph includes the study of chemical and mineral compositions of terrestrial and marine manganese ores, methods of their analysis, dependence of manganese crust geochemistry on tectonic position of their formation, problems of manganese genesis and sources of manganese in ocean ores in connection with geohistorical aspects of ocean formation and development. A hypothesis is offered that formation of giant manganese mineral basins on continental margins resulted from a large asteroid fall to the ocean.本专著涵盖了陆相及海相锰矿石的化学与矿物组成研究、矿石分析方法、锰结壳（manganese crust）地球化学与其形成构造环境的相关性，同时结合海洋形成与演化的地质历史背景，探讨海洋锰矿中锰的成因问题与锰物质来源。本专著提出一项假说：大陆边缘巨型锰矿盆地的形成，源于一颗大型小行星撞击海洋。