There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock ... Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of ...

There are three main types of rock — igneous, sedimentary and metamorphic — with varying mineral mixes depending on where and how the rock came to be. Igneous rocks — which form as magma solidifies ...