Relative dating to determine the age of rocks and fossils Geologists have established a set of principles that can be applied to sedimentary and volcanic rocks that are exposed at the Earth's ...

They have been slowly recycled over millions of years.This is called the rock cycle.Sedimentary rocks form when tiny particles of rock that have been weathered and eroded settle out of slow moving ...

"For each mineral, they will have a set way that those atoms bond ... There are three main types of rock — igneous, sedimentary and metamorphic — with varying mineral mixes depending on ...