Sedimentary rocks develop from eroded grains of other rocks and organic matter. Metamorphic rocks are the third main classification. These started out as other types of rock but were changed by ...

Uncovering the fossil record requires scientists with many different areas of expertise ... There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils ...

Find out more about the different rock types in this guide ... Rock particles can be transported by rivers and form sedimentary rocks. 1 Sediment transport Sediment transport is the first all ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...