Short definition relative dating
By deducing which fossils are formed in the sequence of time, the periods when the particular fossilized entities existed can be arranged in order without the actual dates of when the fossils were laid down.
Radioactive isotopes can also be used by a paleontologists to assign an age to a fossil in some cases and that is an example of absolute dating with radiometric methods. Looking at how rock formations are structured, a geologist may be able to say which rock was developed in which layer in a particular order but not be able to determine that actual geologic age of the layers.
The circumstances of the object may allow one to say that one object is older than another without being able to assign a particular age to the objects.
For example: If an archaeologist is studying past civilizations, the archaeologist may be able to say that in a particular location the ruins of once civilization were found to have been build on another and so the layers unearthed in an excavation convey the sequence of historical occupations without revealing the actual dates.
Geologists deal with the oldest of samples and radiometric dating with uranium is one of the few methods of absolute dating.
Because of their unique decay rates, different elements are used for dating different age ranges.
Relative dating is a scientific process of evaluation used to determine the relative order of past events, but does not determine the absolute age of an object.
Long Answer: Sciences such as geology, paleontology and archeology are very interested in identifying the age of objects found and these scientists sometimes use either relative dating or absolute dating to characterize the age of the objects they study.
For example, the decay of potassium-40 to argon-40 is used to date rocks older than 20,000 years, and the decay of uranium-238 to lead-206 is used for rocks older than 1 million years.
Radiocarbon dating measures radioactive isotopes in once-living organic material instead of rock, using the decay of carbon-14 to nitrogen-14.Short Answer: Both relative dating and absolute dating are tools used to give temporal characteristics to a sequence of events.