Advantages of relative dating in geology
• Relative dating does not tell the exact age, it can only compare items as younger and older.
This is possible because properties of rock formations are closely associated with the age of the artifacts found trapped within them.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.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.C-14 has a half life of 5730 years which means that only half of the original amount is left in the fossil after 5730 years while half of the remaining amount is left after another 5730 years.Though using similar methods, these two techniques differ in certain ways that will be discussed in this article.
As the name implies, relative dating can tell which of the two artifacts is older.
A layer that is higher is of later age than a layer that is lower in order.
This means that the oldest are the strata that are lying at the bottom.
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.
This type of dating employs many dating techniques like atomic clocks, carbon dating, annual cycle methods, and trapped electron method.