Dictionary definition absolute dating
If scientists encountered anything older than that, they would have to use a different method.Potassium-argon dating: This type of dating is very similar to radiocarbon dating, in that is uses essentially the same methods.Scientists can take very accurate readings using this method, often to the exact calendar year.Amino acid dating: This method is useful when determining the age of a material that was once alive. By counting the amounts of certain amino acids, scientists can determine how long ago the specimen died.For example, while one type of absolute age dating may be perfect to figure out how old a dinosaur bone fossil is, another method of dating might be perfect to figure out the age of a rock sample.Let's look at a few prominent types of absolute age dating.
Many scientists prefer the term calendar dating, as it implies that ages determined can be plotted on a calendar.Imagine it this way: If you have any siblings, using relative age dating would be like saying, 'I am older than my brother but younger than my sister,' but using absolute age dating would be like saying, 'I am 23 years old.' Since scientists work with many different types of Earth materials (rock, fossils, etc.), there are many types of absolute age dating.Some types are useful in certain situations and for certain materials, while others are perfect for other jobs.This is different to relative dating, which only puts geological events in time Most absolute dates for rocks are obtained with radiometric methods.These use radioactive minerals in rocks as geological clocks.