Radiometric dating can provide an exact numerical age for a rock, while the law of superposition only allows for relative dating of rocks based on their position in the geological layering. This means that radiometric dating can give more precise and absolute dates for rocks and can also be used to date rocks that are not in contact with other rocks to determine their age. Additionally, radiometric dating can be used to compare the ages of rocks from different locations, while the law of superposition can only determine the age order of rocks within a certain location.
