REDUCTIVITY OF HUMIC COAL IN CHINA AND ITS RELATION TO SEDIMENTARY ENVIRONMENT

This paper deals with an preliminary study and analysis on the relationship between the sedimentary environment of coal-bearing formations and coal-forming quality in China. These coal-dearing formations are lower Carboniferous, Middle Carboniferous,Upper Carboniferous, the Early Lower Permian,Late Lower Permian, Early Upper Permian; Upper Triassic,Lower and Middle Jurassic,Upper Jurassic-Lower Cretaceous and the Lower and Upper Tertiary.