The physical remains of organisms and the evidence of behaviors ... Throughout the earth's history, each of the three rock types has been continuously formed and recycled into other types of rock in a ...

There are three main types of rock, with rocks changing ... that the rocks were much older than humans. Rocks can be weathered by a physical process, like a change in temperature, freezing and ...

Mineralogy is the study of the chemistry, crystal structure and physical properties of the mineral constituents ... the genesis of accessory minerals such as REE phosphates in all rock types, the ...