As the graphic above may depict, the earth, is always in motion. It is contantly evolving and changing form, shape and structure. Rocks are a major part of this. There are three different types of rock and the rock cycle explains the interactions between these. These different types of rock give us different minerals and assets.
Geologists know how to distinguish different types of rocks.
They know the types of rocks and the structures within each rock that may contain minerals. With this knowledge, they can advise companies where to search for specific mineral resources. For example, on the geologist's advice, an oil company will search only in areas where the rock structure and type promises oil or gas. Without this specialized knowledge, mining companies could waste time and money searching for minerals in the wrong places. Within this layer are places where the rock has melted.