Absolute dating of fossils


07-Jul-2020 04:32

Relative dating is a less advanced technique as compared to absolute dating.

In relative dating, mostly the common sense principles are applied, and it is told that which artifact or object is older than the other one.

To evaluate the exact age, both the chemical and physical properties of the object are looked keenly.

The main techniques used in absolute dating are carbon dating, annual cycle method, trapped electron method, and the atomic clocks.

Most commonly, the ancient factors of the rocks or objects are examined using the method called stratigraphy.

In other words, we can say that the age in relative dating is ascertained by witnessing the layers of deposition or the rocks.

In the field of Geology, dating is an important term as it is a technique through which evaluation regarding the age and period about the fossil, remains, the archaeologists do valuables and artifacts.

absolute dating of fossils-79

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The law of superposition states that the older layers will be deeper into the earth meaning that scientists can determine roughly how old a fossil is depending on what layer of rock it was found in.However, you cannot determine the age of a fossil if the rocks nearby haven’t been previously dated.This is where index fossils are used, they are known fossils that are used to date a specific time in earths history, the most useful index fossils must be recognisable, abundant, have a wide geography distribution and also only be around for a fairly short period of time.This form of dating is used to determine a precise age of a rock or fossil by radioactive dating.

In a process called radioactive decay, isotopes of a substance is broken down over time.

Because carbon-14 decays fast the material can only be around 75,000 years old.



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