Mudstone
Mudstone (mudstone) is a sedimentary rock, the composition is more complex, bedding is not obvious, formed by the fine particles of sediment, black mudstone often contains organic matter, is a kind of oil system. Mudstone according to which the material mixed, can be divided into: ▪ Calcareous siltstone mudstone ▪ Iron mudstone ▪ Carbonaceous mudstone ▪ Water moss mudstone ...