However, archeologists still require further information to find out the items that are oldest and those that are youngest in the order.
It is left for absolute dating to come up with the precise age of an artifact.
Upper most layers are considered the youngest while the lowermost deposition is considered as oldest.
However, age of deposition does not mean the age of artifacts found in that layer.
Artifacts found in a layer can be compared with other items found in layers of similar age and placed in order.
As the word relative tells that defining the object with respect to the other object, it will be pertinent to mention here that actual numerical dates of the rocks or sites are not known in this type of dating.
Other than rocks, fossils are the other most important elements in the relative dating as many organisms have there remain in the sedimentary rocks.