Compare relative and absolute dating
The primary difference is that absolute dating assigns an actual time or age to an event or object.Relative dating simply says one is older than the other but no age is specified.Tools like radiometric dating allow some samples to be assigned a certain age to within some accuracy.Assigning a certain age or date is a form of absolute dating.
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.
In this lesson, we're going to discuss what each type of time is and why it is important so that you too can understand how they work to describe past events on Earth. Let's start with absolute time, also called chronometric time ('chrono' means 'time' and 'metric' means 'measure').
You can think of this type of time as how we normally view it on a day-to-day basis: specific intervals or moments measured in days, months, years, etc.
Sedimentary rocks are rarely useful for dating because they are made up of bits of older rocks.
Uranium is present in many different rocks and minerals, usually in the form of uranium-238.