Mudstone facts for kids
A mudstone is a siliciclastic sedimentary rock which has a mixture of silt- and clay-sized particles (at least 1/3 of each). So, a mudstone is a type of mudrock with a more varied grain size than either siltstones or claystones.
Images for kids
Mudstone formation on Lyme Regis East Beach
Mudstone Facts for Kids. Kiddle Encyclopedia.