Why is radiometric dating important

” They realize that you cannot know how long the swimmer took unless you knew the time on the wristwatch when the race started.Keep that in mind when you think about working out the age of something. Actually, knowing the starting time is still not enough.During the race you have to watch the swimmer and count how many laps he has swum so you know that he has done 1,500 metres.And you have to check to make sure he touches the end for each lap.Dinosaur bones, on the other hand, are millions of years old -- some fossils are billions of years old.

So to determine the age of sedimentary rock layers, researchers first have to find neighboring layers of Earth that include igneous rock, such as volcanic ash.You can learn more about fossils, dinosaurs, radiometric dating and related topics by reading through the links on the next page.Radiometric dating isn't the only method of determining the age of rocks.These layers are like bookends -- they give a beginning and an end to the period of time when the sedimentary rock formed.

By using radiometric dating to determine the age of igneous brackets, researchers can accurately determine the age of the sedimentary layers between them.

Without these observations you cannot be sure that the time is valid.

Why is radiometric dating important comments

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