Shale is a fined-grand classic sedimentary rock which is composed of mud.
Shale is typically exhibited varying degrees of fissility, breaking into thin layers. They are composed of the variable amount of clay quartz and mineral grains and a typical color which is grey.</span>
Explanation: Shale has the smallest grains and called as clay, then silt and then sand. These are the smallest sediment particle. Shale is a rock made mostly of clay, silt stone is made up of silt-size grains, which gives shale a smooth texture.
It is made of smallest particle size. This is a fine grained sedimentary rock rock composed of mud.
