A compound is a substance that contains two or more elements close elementA pure substance that is made from only one type of atom ... s causeway is an igneous rock. Sedimentary rocks are formed ...

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 ...

What FACTS ABOUT ROCKS do you know? They are abundant on earth, and yet little is known about them. These facts will increase your knowledge of the rocks.

The characteristics of the rocks that hold fossils can be as informative as the fossils themselves. There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all ...

This is a beginner's guide to identifying UK rock types. The guide has two main sections: background information on the structure and forces affecting the Earth in relation to rock formation a more ...