The rock cycle is a series of processes that transform one rock type into another These processes create three main types of rocks From an engineering stand point, we are interested in an index to describe the degree of rock alterability and relate the properties of the rock to that index Igneous rocks form in two different ways Rock that comes from lava cools very fast and can either be very light and airy or the rocks can be glassy Rocks that come from magma are formed under ground
They are often times very hard and have more colors Sedimentary rock is formed in layers. This rock key has been designed and written to assist children and adults in identifying the common rocks they find in their back yards and on memorable vacations. The rock cycle simplified elevated temperature sedimentary and pressure rock and minerals lithification (make into rock) metamorphic rocks and minerals sediment There are two major classifications of igneous rocks Intrusive igneous rocks are formed by magma that cools below the earth’s surface
