to compare the ages of two or more artifacts, rocks or even sites.Difference between relative dating and absolute dating of rocks . you can date detrital zircons in a sandstone and compare the ages to potential source regions to determine the source of the sediment. Absolute dating can be used to provenance many rocks: e.g.
Relative dating is usually easy and often requires nothing more than careful field observation, which in many cases can be made in a few seconds.Some scientists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies an unwarranted certainty and precision.Absolute dating provides a computed numerical age in contrast with relative dating which provides only an order of events. Absolute dating is rather limited as to the materials that can be dated, and mostly (but with a few exceptions) only works on igneous and metamorphic rocks. Absolute dating is difficult, time-consuming, expensive, and relatively inaccessible.