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Fossils and relative dating

Knowing when a dinosaur or other animal lived is important because it helps us place them on the evolutionary family tree.

Accurate dates also allow us to create sequences of evolutionary change and work out when species appeared or became extinct. These are: Where possible, several different methods are used and each method is repeated to confirm the results obtained and improve accuracy.

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.

There are many methods employed by these scientists, interested in the old, to get to know the age of items.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.Instead, other methods are used to work out a fossil’s age.These include radiometric dating of volcanic layers above or below the fossils or by comparisons to similar rocks and fossils of known ages.This type of dating employs many dating techniques like atomic clocks, carbon dating, annual cycle methods, and trapped electron method.Dendrochronology is another of the popular method of finding the exact age through growth and patterns of thick and thin ring formation in fossil trees.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.

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