Coal geology emphatically studies always stratigraphy and sedimentology of coal and coal-bearingstrata.
煤地质学一直偏重于对煤和含煤地层的地层学和沉积学的研究。
2
This paper discusses the petrologic characteristics of the coal-bearingstrata under the geologic structural background of the Tertiary coal basin in Hunchun.
本文以珲春早第三纪含煤盆地的地质构违背景为依据,分析了煤系地层的岩石学特征。
3
A kind of high plasticity soft-clay, also called kibushi clay, is widely deposited in Carboniferous-Permian and Jurassic coal-bearingstrata in northern China.