This gives away the true age of the fossil that contains C-14 that starts decaying after the death of the human being or animal. Absolute Dating • Dating techniques are used in archeology to ascertain the age of old artifacts and a broad classification of these methods bifurcates them in relative dating and absolute dating • Relative dating comes to a conclusion based upon the study of layer formation of rocks.Upper most layers are considered the youngest while the lowermost deposition is considered as oldest.The most popular method of radio dating is radio carbon dating which is possible because of the presence of C-14, an unstable isotope of carbon.
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.
There is some ambiguity in the block diagram, so students must determine numerical ages for samples from the block diagram to test their relative age hypotheses.
Students "date" samples from the block diagram by counting the number of 235U and 207Pb atoms (colored beads) in a zircon (Ziploc bag).
This is a method that does not find the age in years but is an effective technique to compare the ages of two or more artifacts, rocks or even sites.
It implies that relative dating cannot say conclusively about the true age of an artifact.
• Relative dating does not tell the exact age, it can only compare items as younger and older.
• Absolute dating techniques can tell the exact age of an artifact by employing various techniques, the most popular being C-14 dating.
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.
A layer that is higher is of later age than a layer that is lower in order.