Dating rocks and fossils uses radiometric dating techniques like radiocarbon dating, potassium-argon dating, and uranium-lead dating to determine the age of rocks, fossils, and organic material by analyzing their radioactive decay through half-life processes. Radiometric dating is commonly used to identify the age of rocks on Earth and the moon, whose rocks are composed of three main suites: the ferroan anorthosite suite, the magnesian suite, and organic materials that can also be dated.